Trial Outcomes & Findings for Mechanistic Drivers of Acute PAPE Responsiveness: Muscle Architecture, Contractile Kinetics, and Excitability in a Randomized Controlled Trial (NCT NCT06982937)

NCT ID: NCT06982937

Last Updated: 2025-12-16

Results Overview

Recruitment status

COMPLETED

Study phase

NA

Target enrollment

44 participants

Primary outcome timeframe

4 minutes post-intervention

Results posted on

2025-12-16

Participant Flow

Participant milestones

Participant milestones
Measure
High-Intensity Half-Squat
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Overall Study
STARTED
22
22
Overall Study
COMPLETED
22
22
Overall Study
NOT COMPLETED
0
0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Mechanistic Drivers of Acute PAPE Responsiveness: Muscle Architecture, Contractile Kinetics, and Excitability in a Randomized Controlled Trial

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Total
n=44 Participants
Total of all reporting groups
Race (NIH/OMB)
Asian
0 Participants
n=6 Participants
0 Participants
n=5 Participants
0 Participants
n=5 Participants
Age, Categorical
<=18 years
0 Participants
n=6 Participants
0 Participants
n=5 Participants
0 Participants
n=5 Participants
Age, Categorical
Between 18 and 65 years
22 Participants
n=6 Participants
22 Participants
n=5 Participants
44 Participants
n=5 Participants
Age, Categorical
>=65 years
0 Participants
n=6 Participants
0 Participants
n=5 Participants
0 Participants
n=5 Participants
Sex: Female, Male
Female
0 Participants
n=6 Participants
0 Participants
n=5 Participants
0 Participants
n=5 Participants
Sex: Female, Male
Male
22 Participants
n=6 Participants
22 Participants
n=5 Participants
44 Participants
n=5 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=6 Participants
0 Participants
n=5 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=6 Participants
0 Participants
n=5 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Black or African American
0 Participants
n=6 Participants
0 Participants
n=5 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
White
22 Participants
n=6 Participants
22 Participants
n=5 Participants
44 Participants
n=5 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=6 Participants
0 Participants
n=5 Participants
0 Participants
n=5 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=6 Participants
0 Participants
n=5 Participants
0 Participants
n=5 Participants
Region of Enrollment
Poland
22 participants
n=6 Participants
22 participants
n=5 Participants
44 participants
n=5 Participants
%MHC-1
26.14 %
STANDARD_DEVIATION 9.19 • n=6 Participants
27.28 %
STANDARD_DEVIATION 10.01 • n=5 Participants
26.71 %
STANDARD_DEVIATION 9.6 • n=5 Participants
Contraction time
26.34 ms
STANDARD_DEVIATION 2.15 • n=6 Participants
23.01 ms
STANDARD_DEVIATION 1.08 • n=5 Participants
24.68 ms
STANDARD_DEVIATION 0.76 • n=5 Participants
Delay time
23.47 ms
STANDARD_DEVIATION 1.16 • n=6 Participants
21.91 ms
STANDARD_DEVIATION 1.14 • n=5 Participants
22.69 ms
STANDARD_DEVIATION 0.02 • n=5 Participants
Muscle displacement
6.78 mm
STANDARD_DEVIATION 1.93 • n=6 Participants
6.61 mm
STANDARD_DEVIATION 1.59 • n=5 Participants
6.70 mm
STANDARD_DEVIATION 1.75 • n=5 Participants
Relaxation time
18.25 ms
STANDARD_DEVIATION 5.16 • n=6 Participants
16.61 ms
STANDARD_DEVIATION 3.82 • n=5 Participants
17.44 ms
STANDARD_DEVIATION 4.56 • n=5 Participants
Sustain time
40.37 ms
STANDARD_DEVIATION 4.27 • n=6 Participants
37.49 ms
STANDARD_DEVIATION 4.13 • n=5 Participants
38.94 ms
STANDARD_DEVIATION 4.40 • n=5 Participants
Muscle thickness
2.47 cm
STANDARD_DEVIATION 0.36 • n=6 Participants
2.57 cm
STANDARD_DEVIATION 0.28 • n=5 Participants
2.53 cm
STANDARD_DEVIATION 0.32 • n=5 Participants
Pennation angle
13.76 degrees
STANDARD_DEVIATION 2.05 • n=6 Participants
14.23 degrees
STANDARD_DEVIATION 1.75 • n=5 Participants
14.00 degrees
STANDARD_DEVIATION 1.90 • n=5 Participants
Fascile lenght
10.61 cm
STANDARD_DEVIATION 2.02 • n=6 Participants
10.67 cm
STANDARD_DEVIATION 2.12 • n=5 Participants
10.64 cm
STANDARD_DEVIATION 2.04 • n=5 Participants
Maximal strength level
98.07 kg
STANDARD_DEVIATION 9.63 • n=6 Participants
102.04 kg
STANDARD_DEVIATION 16.14 • n=5 Participants
100.06 kg
STANDARD_DEVIATION 13.29 • n=5 Participants
Jump height
45.23 cm
STANDARD_DEVIATION 4.95 • n=6 Participants
47.52 cm
STANDARD_DEVIATION 4.70 • n=5 Participants
46.38 cm
STANDARD_DEVIATION 4.91 • n=5 Participants
Muscle activation during countermovement jump
45.87 percentage of MVC
STANDARD_DEVIATION 12.78 • n=6 Participants
44.16 percentage of MVC
STANDARD_DEVIATION 10.92 • n=5 Participants
45.02 percentage of MVC
STANDARD_DEVIATION 11.78 • n=5 Participants

PRIMARY outcome

Timeframe: 4 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Jump Height 4 Minute
45.34 cm
Standard Deviation 5.28
47.41 cm
Standard Deviation 5.13

PRIMARY outcome

Timeframe: 6 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Jump Height 6 Minute
48.01 cm
Standard Deviation 5.13
47.41 cm
Standard Deviation 3.92

PRIMARY outcome

Timeframe: 8 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Jump Height 8 Minute
47.08 cm
Standard Deviation 5.31
48.10 cm
Standard Deviation 4.60

PRIMARY outcome

Timeframe: 10 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Jump Height 10 Minute
46.17 cm
Standard Deviation 5.17
47.59 cm
Standard Deviation 3.90

PRIMARY outcome

Timeframe: 12 minute post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Jump Height 12 Minute
45.27 cm
Standard Deviation 5.14
47.91 cm
Standard Deviation 4.27

PRIMARY outcome

Timeframe: Immediate post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Muscle Thickness Post
2.95 cm
Standard Deviation 0.37
2.63 cm
Standard Deviation 0.33

PRIMARY outcome

Timeframe: 4 minute post-intervention (single session)

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Muscle Thickness 4 Minute
2.92 cm
Standard Deviation 0.35
2.58 cm
Standard Deviation 0.33

PRIMARY outcome

Timeframe: 6 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Muscle Thickness 6 Minute
2.83 cm
Standard Deviation 0.37
2.58 cm
Standard Deviation 0.30

PRIMARY outcome

Timeframe: 8 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Muscle Thickness 8 Minute
2.70 cm
Standard Deviation 0.36
2.53 cm
Standard Deviation 0.32

PRIMARY outcome

Timeframe: 10 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Muscle Thickness 10 Minute
2.66 cm
Standard Deviation 0.35
2.60 cm
Standard Deviation 0.39

PRIMARY outcome

Timeframe: 12 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Muscle Thickness 12 Minute
2.57 cm
Standard Deviation 0.44
2.55 cm
Standard Deviation 0.38

PRIMARY outcome

Timeframe: Immediate post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Pennation Angle Post
17.83 degrees
Standard Deviation 2.49
13.84 degrees
Standard Deviation 1.98

PRIMARY outcome

Timeframe: 4 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Pennation Angle 4 Minute
16.95 degress
Standard Deviation 2.63
13.37 degress
Standard Deviation 2.07

PRIMARY outcome

Timeframe: 6 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Pennation Angle 6 Minute
17.09 degrees
Standard Deviation 2.70
14.06 degrees
Standard Deviation 2.39

PRIMARY outcome

Timeframe: 8 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Pennation Angle 8 Minute
16.84 degrees
Standard Deviation 2.88
14.09 degrees
Standard Deviation 2.45

PRIMARY outcome

Timeframe: 10 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Pennation Angle 10 Minute
16.52 degrees
Standard Deviation 2.70
13.96 degrees
Standard Deviation 2.42

PRIMARY outcome

Timeframe: 12 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Pennation Angle 12 Minute
14.61 degrees
Standard Deviation 3.16
13.55 degrees
Standard Deviation 2.62

PRIMARY outcome

Timeframe: Immediate post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Fascicle Length Post
9.82 cm
Standard Deviation 1.88
11.26 cm
Standard Deviation 2.49

PRIMARY outcome

Timeframe: 4 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Fascicle Length 4 Minute
10.27 cm
Standard Deviation 2.18
11.54 cm
Standard Deviation 3.17

PRIMARY outcome

Timeframe: 6 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Fascicle Length 6 Minute
9.80 cm
Standard Deviation 1.64
10.86 cm
Standard Deviation 1.90

PRIMARY outcome

Timeframe: 8 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Fascicle Length 8 Minute
9.59 cm
Standard Deviation 2.61
10.57 cm
Standard Deviation 1.60

PRIMARY outcome

Timeframe: 10' minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Fascicle Length 10 Minute
9.69 cm
Standard Deviation 2.46
10.97 cm
Standard Deviation 1.76

PRIMARY outcome

Timeframe: 12 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Fascicle Length 12 Minute
10.69 cm
Standard Deviation 3.11
11.14 cm
Standard Deviation 1.98

PRIMARY outcome

Timeframe: 4 minutes post-intervention

Surface electromyographic activity (voluntary activation level) of the vastus lateralis muscle recorded during a standardized countermovement jump. Higher values indicate greater muscle activation of the vastus lateralis during the jump, whereas lower values indicate reduced activation. Results presented as % from maximal voluntary contraction (MVC) during the procedure of normalization (locked at 90 degrees knee extension)

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Muscle Activation During Countermovement Jump in 4 Minute
50.63 percentage of MVC
Standard Deviation 14.18
43.96 percentage of MVC
Standard Deviation 11.31

PRIMARY outcome

Timeframe: 6 minutes post-intervention

Surface electromyographic activity (voluntary activation level) of the vastus lateralis muscle recorded during a standardized countermovement jump. Higher values indicate greater muscle activation of the vastus lateralis during the jump, whereas lower values indicate reduced activation. Results presented as % from maximal voluntary contraction (MVC) during the procedure of normalization (locked at 90 degrees knee extension)

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Muscle Activation During Countermovement Jump in 6 Minute
45.29 percentage of MVC
Standard Deviation 13.85
43.96 percentage of MVC
Standard Deviation 11.31

PRIMARY outcome

Timeframe: 8 minutes post-intervention

Surface electromyographic activity (voluntary activation level) of the vastus lateralis muscle recorded during a standardized countermovement jump. Higher values indicate greater muscle activation of the vastus lateralis during the jump, whereas lower values indicate reduced activation. Results presented as % from maximal voluntary contraction (MVC) during the procedure of normalization (locked at 90 degrees knee extension)

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Muscle Activation During Countermovement Jump in 8 Minute
46.38 percentage of MVC
Standard Deviation 13.61
49.43 percentage of MVC
Standard Deviation 12.44

PRIMARY outcome

Timeframe: 10 minutes post-intervention

Surface electromyographic activity (voluntary activation level) of the vastus lateralis muscle recorded during a standardized countermovement jump. Higher values indicate greater muscle activation of the vastus lateralis during the jump, whereas lower values indicate reduced activation. Results presented as % from maximal voluntary contraction (MVC) during the procedure of normalization (locked at 90 degrees knee extension)

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Muscle Activation During Countermovement Jump in 10 Minute
48.76 percentage of MVC
Standard Deviation 21.90
51.71 percentage of MVC
Standard Deviation 14.85

PRIMARY outcome

Timeframe: 12 minutes post-intervention

Surface electromyographic activity (voluntary activation level) of the vastus lateralis muscle recorded during a standardized countermovement jump. Higher values indicate greater muscle activation of the vastus lateralis during the jump, whereas lower values indicate reduced activation. Results presented as % from maximal voluntary contraction (MVC) during the procedure of normalization (locked at 90 degrees knee extension)

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Muscle Activation During Countermovement Jump in 12 Minute
43.19 percentage of MVC
Standard Deviation 9.49
34.39 percentage of MVC
Standard Deviation 8.23

PRIMARY outcome

Timeframe: Immediate post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Contraction Time Post
31.34 ms
Standard Deviation 2.94
29.04 ms
Standard Deviation 2.45

PRIMARY outcome

Timeframe: 4 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Contraction Time 4 Minute
29.94 ms
Standard Deviation 2.61
27.91 ms
Standard Deviation 2.55

PRIMARY outcome

Timeframe: 6 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Contraction Time 6 Minute
26.87 ms
Standard Deviation 2.32
27.98 ms
Standard Deviation 2.24

PRIMARY outcome

Timeframe: 8 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Contraction Time 8 Minute
26.54 ms
Standard Deviation 2.33
26.43 ms
Standard Deviation 2.05

PRIMARY outcome

Timeframe: 10 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Contraction Time 10 Minute
26.24 ms
Standard Deviation 2.35
26.83 ms
Standard Deviation 2.58

PRIMARY outcome

Timeframe: 12 post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Contraction Time 12 Minutes
26.01 ms
Standard Deviation 2.09
26.29 ms
Standard Deviation 1.77

PRIMARY outcome

Timeframe: Immediate post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Delay Time Post
21.49 ms
Standard Deviation 1.16
22.54 ms
Standard Deviation 1.33

PRIMARY outcome

Timeframe: 4 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Delay Time 4 Minute
21.06 ms
Standard Deviation 1.14
22.41 ms
Standard Deviation 1.35

PRIMARY outcome

Timeframe: 6 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Delay Time 6 Minute
21.04 ms
Standard Deviation 1.18
22.52 ms
Standard Deviation 1.38

PRIMARY outcome

Timeframe: 8 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Delay Time 8 Minute
20.77 ms
Standard Deviation 1.16
22.07 ms
Standard Deviation 1.36

PRIMARY outcome

Timeframe: 10 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Delay Time 10 Minute
22.05 ms
Standard Deviation 2.39
22.84 ms
Standard Deviation 1.86

PRIMARY outcome

Timeframe: 12 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Delay Time 12 Minute
21.70 ms
Standard Deviation 2.54
22.88 ms
Standard Deviation 1.91

PRIMARY outcome

Timeframe: Immediate post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Relaxation Time Post
20.97 ms
Standard Deviation 7.46
16.35 ms
Standard Deviation 5.71

PRIMARY outcome

Timeframe: 4 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Relaxation Time 4 Minute
19.08 ms
Standard Deviation 7.90
16.35 ms
Standard Deviation 5.71

PRIMARY outcome

Timeframe: 6 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Relaxation Time 6 Minute
18.16 ms
Standard Deviation 7.52
17.57 ms
Standard Deviation 6.20

PRIMARY outcome

Timeframe: 8 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Relaxation Time 8 Minute
19.28 ms
Standard Deviation 8.02
19.94 ms
Standard Deviation 8.53

PRIMARY outcome

Timeframe: 10 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Relaxation Time 10 Minute
17.71 ms
Standard Deviation 7.14
16.63 ms
Standard Deviation 4.88

PRIMARY outcome

Timeframe: 12 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Relaxation Time 12 Minute
17.20 ms
Standard Deviation 6.64
17.30 ms
Standard Deviation 5.48

PRIMARY outcome

Timeframe: Immediate post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Muscle Displacement Post
5.70 mm
Standard Deviation 1.54
6.37 mm
Standard Deviation 1.35

PRIMARY outcome

Timeframe: 4 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Muscle Displacement 4 Minute
5.98 mm
Standard Deviation 1.78
6.36 mm
Standard Deviation 1.46

PRIMARY outcome

Timeframe: 6 minutes post-intervention

6' post intervention measure

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Muscle Displacement 6 Minute
5.80 mm
Standard Deviation 1.19
6.83 mm
Standard Deviation 0.90

PRIMARY outcome

Timeframe: 8 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Muscle Displacement 8 Minute
5.97 mm
Standard Deviation 1.34
6.59 mm
Standard Deviation 1.04

PRIMARY outcome

Timeframe: 12 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Muscle Displacement 10 Minute
6.21 mm
Standard Deviation 1.43
6.22 mm
Standard Deviation 1.11

PRIMARY outcome

Timeframe: 12 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Muscle Displacement 12 Minute
6.50 mm
Standard Deviation 1.55
6.23 mm
Standard Deviation 1.21

PRIMARY outcome

Timeframe: Immediate post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Sustain Time Post
48.86 ms
Standard Deviation 3.86
38.83 ms
Standard Deviation 2.77

PRIMARY outcome

Timeframe: 4 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Sustain Time 4 Minute
46.23 ms
Standard Deviation 3.74
39.52 ms
Standard Deviation 2.70

PRIMARY outcome

Timeframe: 6 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Sustain Time 6 Minute
43.27 ms
Standard Deviation 6.52
38.82 ms
Standard Deviation 4.52

PRIMARY outcome

Timeframe: 8 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Sustain Time 8 Minute
42.36 ms
Standard Deviation 4.33
39.03 ms
Standard Deviation 3.50

PRIMARY outcome

Timeframe: 10 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Sustain Time 10 Minutes
42.91 ms
Standard Deviation 5.47
39.11 ms
Standard Deviation 4.31

PRIMARY outcome

Timeframe: 12 minutes post-intervention

Outcome measures

Outcome measures
Measure
High-Intensity Half-Squat
n=22 Participants
Participants perform one set half-squats using a free-weight barbell in a squat rack to elicit PAPE High-Intensity Half-Squat: Participants in the conditioning arm perform a single set of two to three half-squats with a free-weight barbell set at 90% of their one-rep max (1RM). Each squat is taken down until the thigh is parallel to the floor (knee at \~90°) and then driven upward as explosively as possible.
Treadmill Running
n=22 Participants
Participants jogged on a level treadmill for five minutes at a comfortable pace to provide general muscle warm-up without significant neuromuscular priming. Treadmill running: Participants engaged in a standardized 5-minute treadmill warm-up. Participants were instructed to walk at a moderate, self-selected pace of approximately 7-9 km/h, maintaining an incline of 0%. Heart rate and perceived exertion were monitored to ensure that the activity remained within a light-intensity range (Borg scale: 6-11).
Sustain Time 12 Minute
43.47 ms
Standard Deviation 4.97
40.77 ms
Standard Deviation 3.72

Adverse Events

High-Intensity Half-Squat

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Treadmill Running

Serious events: 0 serious events
Other events: 0 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Adverse event data not reported

Additional Information

Katarzyna Sadowska

Jerzy Kukuczka Academy of Physical Education

Phone: 32 207 5189

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place