Trial Outcomes & Findings for Muscle Fatigue and Scapular Sensorimotor System (NCT NCT03066102)
NCT ID: NCT03066102
Last Updated: 2019-07-29
Results Overview
Test the ability of active re-position the scapula from neutral to 90% range of protraction, and elevation.
Recruitment status
COMPLETED
Study phase
NA
Target enrollment
30 participants
Primary outcome timeframe
through fatigue intervention completion, an average of 20 minutes in female subjects and 40 minutes in male subjects
Results posted on
2019-07-29
Participant Flow
Participant milestones
| Measure |
Fatigued Group
Subjects held in a modify pushup plus position. Like an all four position, subjects hold with right arm with elbow flexion and full shoulder protraction. Male subjects had to hold three minutes for ten repetitions, and female subjects were two minutes for five repetitions. There was thirty second rest between repetitions. The end of fatigue task was: subjects finished all the repetition, or could not do one more repetition. Female subjects could do more than five repetitions if they felt ok, and the maximum repetitions were ten. The muscle activation of upper trapezius, lower trapezius, and serratus would record for analysis of median frequency. As long as finished fatigue task, the post measurements would start.
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|---|---|
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Overall Study
STARTED
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30
|
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Overall Study
COMPLETED
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30
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Overall Study
NOT COMPLETED
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0
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Reasons for withdrawal
Withdrawal data not reported
Baseline Characteristics
Race and Ethnicity were not collected from any participant.
Baseline characteristics by cohort
| Measure |
Fatigued Group
n=30 Participants
the only group in this study, and every subjects took the fatigued task
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|---|---|
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Age, Continuous
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23.5 years
STANDARD_DEVIATION 1.8 • n=30 Participants
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Sex: Female, Male
Female
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15 Participants
n=30 Participants
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Sex: Female, Male
Male
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15 Participants
n=30 Participants
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height
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167.57 centimeters
STANDARD_DEVIATION 8.29 • n=30 Participants
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weight
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59.30 kilograms
STANDARD_DEVIATION 8.53 • n=30 Participants
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PRIMARY outcome
Timeframe: through fatigue intervention completion, an average of 20 minutes in female subjects and 40 minutes in male subjectsTest the ability of active re-position the scapula from neutral to 90% range of protraction, and elevation.
Outcome measures
| Measure |
Fatigued Group
n=30 Participants
Subjects held in a modify pushup plus position. Like an all four position, subjects hold with right arm with elbow flexion and full shoulder protraction. Male subjects had to hold three minutes for ten repetitions, and female subjects were two minutes for five repetitions. There was thirty second rest between repetitions. The end of fatigue task was: subjects finished all the repetition, or could not do one more repetition. Female subjects could do more than five repetitions if they felt ok, and the maximum repetitions were ten. The muscle activation of upper trapezius, lower trapezius, and serratus would record for analysis of median frequency. As long as finished fatigue task, the post measurements would start.
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|---|---|
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Change From Baseline in Scapular Proprioception
elevation task: pre-test
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-0.48 centimeters
Standard Deviation 0.88
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Change From Baseline in Scapular Proprioception
elevation task: post-test
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-0.19 centimeters
Standard Deviation 1.05
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Change From Baseline in Scapular Proprioception
protraction task: pre-test
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-0.37 centimeters
Standard Deviation 0.61
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Change From Baseline in Scapular Proprioception
protraction task: post-test
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-0.32 centimeters
Standard Deviation 0.73
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PRIMARY outcome
Timeframe: through fatigue intervention completion, an average of 20 minutes in female subjects and 40 minutes in male subjectsTest the ability of muscle activation (upper trapezius, lower trapezius, and serratus anterior) during active re-position the scapula from neutral to 90% range of protraction, and elevation. Muscle activation during active re-position would divide into muscle activation during maximum voluntary isometric contraction (MVIC), present in percent.
Outcome measures
| Measure |
Fatigued Group
n=30 Participants
Subjects held in a modify pushup plus position. Like an all four position, subjects hold with right arm with elbow flexion and full shoulder protraction. Male subjects had to hold three minutes for ten repetitions, and female subjects were two minutes for five repetitions. There was thirty second rest between repetitions. The end of fatigue task was: subjects finished all the repetition, or could not do one more repetition. Female subjects could do more than five repetitions if they felt ok, and the maximum repetitions were ten. The muscle activation of upper trapezius, lower trapezius, and serratus would record for analysis of median frequency. As long as finished fatigue task, the post measurements would start.
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|---|---|
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Change From Baseline in Muscle Activation During Scapular Proprioception
lower trapezius during protraction: pre-test
|
6.41 percentage of MVIC
Standard Deviation 5.11
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Change From Baseline in Muscle Activation During Scapular Proprioception
lower trapezius during protraction: post-test
|
5.59 percentage of MVIC
Standard Deviation 4.58
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Change From Baseline in Muscle Activation During Scapular Proprioception
serrates anterior during elevation: pre-test
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18.48 percentage of MVIC
Standard Deviation 11.05
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Change From Baseline in Muscle Activation During Scapular Proprioception
serrates anterior during elevation: post-test
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26.34 percentage of MVIC
Standard Deviation 18.76
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Change From Baseline in Muscle Activation During Scapular Proprioception
serrates anterior during protraction: pre-test
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15.22 percentage of MVIC
Standard Deviation 12.54
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Change From Baseline in Muscle Activation During Scapular Proprioception
serrates anterior during protraction: post-test
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27.41 percentage of MVIC
Standard Deviation 38.03
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Change From Baseline in Muscle Activation During Scapular Proprioception
upper trapezius during elevation: pre-test
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45.17 percentage of MVIC
Standard Deviation 20.18
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Change From Baseline in Muscle Activation During Scapular Proprioception
upper trapezius during elevation: post-test
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52.46 percentage of MVIC
Standard Deviation 53.62
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Change From Baseline in Muscle Activation During Scapular Proprioception
upper trapezius during protraction: pre-test
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8.28 percentage of MVIC
Standard Deviation 7.11
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Change From Baseline in Muscle Activation During Scapular Proprioception
upper trapezius during protraction: post-test
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10.49 percentage of MVIC
Standard Deviation 13.77
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Change From Baseline in Muscle Activation During Scapular Proprioception
lower trapezius during elevation: pre-test
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3.51 percentage of MVIC
Standard Deviation 1.97
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Change From Baseline in Muscle Activation During Scapular Proprioception
lower trapezius during elevation: post-test
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3.51 percentage of MVIC
Standard Deviation 2.17
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SECONDARY outcome
Timeframe: through fatigue intervention completion, an average of 20 minutes in female subjects and 40 minutes in male subjectsuse dynamometer to detect the force of maximum isometric voluntary contraction of upper trapezius, lower trapezius and serratus anterior
Outcome measures
| Measure |
Fatigued Group
n=30 Participants
Subjects held in a modify pushup plus position. Like an all four position, subjects hold with right arm with elbow flexion and full shoulder protraction. Male subjects had to hold three minutes for ten repetitions, and female subjects were two minutes for five repetitions. There was thirty second rest between repetitions. The end of fatigue task was: subjects finished all the repetition, or could not do one more repetition. Female subjects could do more than five repetitions if they felt ok, and the maximum repetitions were ten. The muscle activation of upper trapezius, lower trapezius, and serratus would record for analysis of median frequency. As long as finished fatigue task, the post measurements would start.
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|---|---|
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Change From Baseline in Scapular Muscle Strength
serrates anterior muscle: pre-test
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10.42 kilograms
Standard Deviation 3.92
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Change From Baseline in Scapular Muscle Strength
serrates anterior muscle: post-test
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8.40 kilograms
Standard Deviation 3.60
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Change From Baseline in Scapular Muscle Strength
upper trapezius muscle: pre-test
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23.39 kilograms
Standard Deviation 10.99
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Change From Baseline in Scapular Muscle Strength
upper trapezius muscle: post-test
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20.87 kilograms
Standard Deviation 10.48
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Change From Baseline in Scapular Muscle Strength
lower trapezius muscle: pre-test
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4.47 kilograms
Standard Deviation 2.08
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Change From Baseline in Scapular Muscle Strength
lower trapezius muscle: post-test
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4.31 kilograms
Standard Deviation 1.89
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SECONDARY outcome
Timeframe: through fatigue intervention completion, an average of 20 minutes in female subjects and 40 minutes in male subjectsuse Liberty to detect the motion of spine, humerus, and scapula during shoulder elevation in the scapular plane (scaption)
Outcome measures
| Measure |
Fatigued Group
n=30 Participants
Subjects held in a modify pushup plus position. Like an all four position, subjects hold with right arm with elbow flexion and full shoulder protraction. Male subjects had to hold three minutes for ten repetitions, and female subjects were two minutes for five repetitions. There was thirty second rest between repetitions. The end of fatigue task was: subjects finished all the repetition, or could not do one more repetition. Female subjects could do more than five repetitions if they felt ok, and the maximum repetitions were ten. The muscle activation of upper trapezius, lower trapezius, and serratus would record for analysis of median frequency. As long as finished fatigue task, the post measurements would start.
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|---|---|
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
upward rotation descending 90 degree: pre-test
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38.10 degree
Standard Deviation 4.84
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
upward rotation descending 30 degree: pre-test
|
7.34 degree
Standard Deviation 4.12
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
upward rotation ascending 30 degree: post-test
|
6.29 degree
Standard Deviation 4.04
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
upward rotation ascending 60 degree: post-test
|
19.34 degree
Standard Deviation 4.40
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
upward rotation ascending 90 degree: post-test
|
36.51 degree
Standard Deviation 5.21
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
upward rotation ascending 120 degree: post-test
|
54.35 degree
Standard Deviation 6.33
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
posterior tilt ascending 30 degree: pre-test
|
0.68 degree
Standard Deviation 4.79
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
posterior tilt ascending 60 degree: pre-test
|
7.60 degree
Standard Deviation 5.75
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
posterior tilt ascending 90 degree: pre-test
|
10.84 degree
Standard Deviation 7.43
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
posterior tilt ascending 120 degree: pre-test
|
13.81 degree
Standard Deviation 12.22
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
posterior tilt ascending 30 degree: post-test
|
0.05 degree
Standard Deviation 4.98
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
posterior tilt ascending 60 degree: post-test
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6.77 degree
Standard Deviation 5.93
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
posterior tilt ascending 90 degree: post-test
|
9.53 degree
Standard Deviation 8.04
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
posterior tilt ascending 120 degree: post-test
|
10.33 degree
Standard Deviation 13.40
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
posterior tilt descending 120 degree: pre-test
|
11.44 degree
Standard Deviation 14.00
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
posterior tilt descending 90 degree: pre-test
|
8.54 degree
Standard Deviation 7.96
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
posterior tilt descending 60 degree: pre-test
|
4.02 degree
Standard Deviation 5.89
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
posterior tilt descending 30 degree: pre-test
|
-2.47 degree
Standard Deviation 5.09
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
posterior tilt descending 120 degree: post-test
|
7.63 degree
Standard Deviation 14.24
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
posterior tilt descending 90 degree: post-test
|
6.64 degree
Standard Deviation 8.61
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
posterior tilt descending 60 degree: post-test
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2.72 degree
Standard Deviation 6.63
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
posterior tilt descending 30 degree: post-test
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-3.55 degree
Standard Deviation 5.41
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
internal rotation ascending 30 degree: pre-test
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11.37 degree
Standard Deviation 5.44
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
internal rotation ascending 60 degree: pre-test
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11.02 degree
Standard Deviation 5.89
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
internal rotation ascending 90 degree: pre-test
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10.68 degree
Standard Deviation 7.52
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
internal rotation ascending 120 degree: pre-test
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10.21 degree
Standard Deviation 13.57
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
internal rotation ascending 30 degree: post-test
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10.84 degree
Standard Deviation 5.23
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
internal rotation ascending 60 degree: post-test
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10.63 degree
Standard Deviation 5.75
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
internal rotation ascending 90 degree: post-test
|
11.29 degree
Standard Deviation 8.03
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
internal rotation ascending 120 degree: post-test
|
13.25 degree
Standard Deviation 14.52
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
internal rotation descending 120 degree: pre-test
|
12.52 degree
Standard Deviation 15.17
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
internal rotation descending 90 degree: pre-test
|
12.66 degree
Standard Deviation 8.76
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
internal rotation descending 60 degree: pre-test
|
11.95 degree
Standard Deviation 6.05
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
internal rotation descending 30 degree: pre-test
|
11.28 degree
Standard Deviation 5.36
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
internal rotation descending 120 degree: post-test
|
15.87 degree
Standard Deviation 14.88
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
internal rotation descending 90 degree: post-test
|
13.66 degree
Standard Deviation 9.07
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
internal rotation descending 60 degree: post-test
|
11.69 degree
Standard Deviation 6.50
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
internal rotation descending 30 degree: post-test
|
10.86 degree
Standard Deviation 5.56
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
upward rotation ascending 30 degree: pre-test
|
6.42 degree
Standard Deviation 3.66
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
upward rotation ascending 60 degree: pre-test
|
18.88 degree
Standard Deviation 4.11
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
upward rotation ascending 90 degree: pre-test
|
35.54 degree
Standard Deviation 4.84
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
upward rotation ascending 120 degree: pre-test
|
52.78 degree
Standard Deviation 6.63
|
|
Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
upward rotation descending 120 degree: pre-test
|
53.92 degree
Standard Deviation 6.21
|
|
Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
upward rotation descending 60 degree: pre-test
|
21.18 degree
Standard Deviation 4.34
|
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
upward rotation descending 120 degree: post-test
|
54.84 degree
Standard Deviation 6.29
|
|
Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
upward rotation descending 90 degree: post-test
|
38.44 degree
Standard Deviation 5.20
|
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
upward rotation descending 60 degree: post-test
|
21.40 degree
Standard Deviation 4.73
|
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Change From Baseline in Shoulder Kinematics Data During Shoulder Elevation in the Scapular Plane
upward rotation descending 30 degree: post-test
|
7.01 degree
Standard Deviation 4.21
|
SECONDARY outcome
Timeframe: through fatigue intervention completion, an average of 20 minutes in female subjects and 40 minutes in male subjectsTest the ability of muscle activity (upper trapezius, lower trapezius, and serratus anterior) during shoulder elevation in the scapular plane (scaption). Muscle activation during scaption would divide into muscle activation during maximum voluntary isometric contraction (MVIC), present in percent.
Outcome measures
| Measure |
Fatigued Group
n=30 Participants
Subjects held in a modify pushup plus position. Like an all four position, subjects hold with right arm with elbow flexion and full shoulder protraction. Male subjects had to hold three minutes for ten repetitions, and female subjects were two minutes for five repetitions. There was thirty second rest between repetitions. The end of fatigue task was: subjects finished all the repetition, or could not do one more repetition. Female subjects could do more than five repetitions if they felt ok, and the maximum repetitions were ten. The muscle activation of upper trapezius, lower trapezius, and serratus would record for analysis of median frequency. As long as finished fatigue task, the post measurements would start.
|
|---|---|
|
Change From Baseline in Scapular Muscle Activity During Shoulder Elevation in the Scapular Plane
serratus anterior ascending 30~60: post-test
|
51.38 percentage of MVIC
Standard Deviation 27.85
|
|
Change From Baseline in Scapular Muscle Activity During Shoulder Elevation in the Scapular Plane
serratus anterior ascending 60~90: post-test
|
62.70 percentage of MVIC
Standard Deviation 38.43
|
|
Change From Baseline in Scapular Muscle Activity During Shoulder Elevation in the Scapular Plane
serratus anterior ascending 30~60: pre-test
|
40.65 percentage of MVIC
Standard Deviation 26.74
|
|
Change From Baseline in Scapular Muscle Activity During Shoulder Elevation in the Scapular Plane
serratus anterior ascending 60~90: pre-test
|
48.62 percentage of MVIC
Standard Deviation 38.33
|
|
Change From Baseline in Scapular Muscle Activity During Shoulder Elevation in the Scapular Plane
serratus anterior ascending 90~120: pre-test
|
65.91 percentage of MVIC
Standard Deviation 34.51
|
|
Change From Baseline in Scapular Muscle Activity During Shoulder Elevation in the Scapular Plane
serratus anterior ascending 90~120: post-test
|
84.61 percentage of MVIC
Standard Deviation 30.36
|
|
Change From Baseline in Scapular Muscle Activity During Shoulder Elevation in the Scapular Plane
serratus anterior descending 120~90: pre-test
|
30.88 percentage of MVIC
Standard Deviation 18.29
|
|
Change From Baseline in Scapular Muscle Activity During Shoulder Elevation in the Scapular Plane
serratus anterior descending 90~60: pre-test
|
23.03 percentage of MVIC
Standard Deviation 18.35
|
|
Change From Baseline in Scapular Muscle Activity During Shoulder Elevation in the Scapular Plane
serratus anterior descending 60~30: pre-test
|
13.99 percentage of MVIC
Standard Deviation 11.00
|
|
Change From Baseline in Scapular Muscle Activity During Shoulder Elevation in the Scapular Plane
serratus anterior descending 120~90: post-test
|
41.05 percentage of MVIC
Standard Deviation 17.06
|
|
Change From Baseline in Scapular Muscle Activity During Shoulder Elevation in the Scapular Plane
serratus anterior descending 90~60: post-test
|
29.09 percentage of MVIC
Standard Deviation 18.26
|
|
Change From Baseline in Scapular Muscle Activity During Shoulder Elevation in the Scapular Plane
serratus anterior descending 60~30: post-test
|
16.91 percentage of MVIC
Standard Deviation 12.04
|
SECONDARY outcome
Timeframe: through fatigue intervention completion, an average of 20 minutes in female subjects and 40 minutes in male subjectsTest the ability of muscle onset timing (upper trapezius, lower trapezius, and serratus anterior) during shoulder elevation in the scapular plane (scaption). Onset timing was determined by EMG signals bigger than resting signals plus 3 times standard deviations. Origin was set at onset of kinematics data of glenohumeral joint.
Outcome measures
| Measure |
Fatigued Group
n=30 Participants
Subjects held in a modify pushup plus position. Like an all four position, subjects hold with right arm with elbow flexion and full shoulder protraction. Male subjects had to hold three minutes for ten repetitions, and female subjects were two minutes for five repetitions. There was thirty second rest between repetitions. The end of fatigue task was: subjects finished all the repetition, or could not do one more repetition. Female subjects could do more than five repetitions if they felt ok, and the maximum repetitions were ten. The muscle activation of upper trapezius, lower trapezius, and serratus would record for analysis of median frequency. As long as finished fatigue task, the post measurements would start.
|
|---|---|
|
Change From Baseline in Scapular Muscle Recruitment Timing During Arm Elevation in Scapular Plane
upper trapezius: pre-test
|
-0.035 millisecond
Standard Deviation 0.326
|
|
Change From Baseline in Scapular Muscle Recruitment Timing During Arm Elevation in Scapular Plane
lower trapezius: pre-test
|
0.420 millisecond
Standard Deviation 0.563
|
|
Change From Baseline in Scapular Muscle Recruitment Timing During Arm Elevation in Scapular Plane
serratus anterior: pre-test
|
-0.081 millisecond
Standard Deviation 0.204
|
|
Change From Baseline in Scapular Muscle Recruitment Timing During Arm Elevation in Scapular Plane
upper trapezius: post-test
|
0.004 millisecond
Standard Deviation 0.278
|
|
Change From Baseline in Scapular Muscle Recruitment Timing During Arm Elevation in Scapular Plane
lower trapezius: post-test
|
0.406 millisecond
Standard Deviation 0.560
|
|
Change From Baseline in Scapular Muscle Recruitment Timing During Arm Elevation in Scapular Plane
serratus anterior: post-test
|
-0.05 millisecond
Standard Deviation 0.197
|
Adverse Events
Fatigued Group
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
Results disclosure agreements
- Principal investigator is a sponsor employee
- Publication restrictions are in place