Trial Outcomes & Findings for EMG Activation of Gluteal Musculature During Exercises With and Without Resistance (NCT NCT01841216)
NCT ID: NCT01841216
Last Updated: 2015-02-03
Results Overview
Percent of Maximal Voluntary Isometric Contraction was measured by placing EMG leads on selected muscles. Data was collected and analyzed with the MyoResearch XP Masters Edition (Noraxam Inc., Scottsdale, AZ). The EMG signals were smoothed and rectified and analyzed using a root-mean-square algorithm. We used visual onset and offset of the EMG signal amplitude to select the middle 3 of 5 trials. The middle three repetitions were analyzed. Average activation and peak activation were determined and then compared to the maximum voluntary isometric contraction (MVIC), captured during a manual muscle test, for each muscle group, and expressed as a %MVIC. The %MVIC can be greater than 100% since the MVIC is captured in a stationary, isometric position using manual force and all other activities are performed in motion against elastic or gravity resistance.
COMPLETED
NA
30 participants
One 40 minute session
2015-02-03
Participant Flow
Participant milestones
| Measure |
Low Back Pain
Lower Body Exercises with and without resistance
Lower Body Exercises with and without resistance: lower body exercises with and without resistance designed to activate the gluteal/hip musculature
|
Healthy
Lower Body Exercises with and without resistance
Lower Body Exercises with and without resistance: lower body exercises with and without resistance designed to activate the gluteal/hip musculature
|
|---|---|---|
|
Overall Study
STARTED
|
15
|
15
|
|
Overall Study
COMPLETED
|
15
|
15
|
|
Overall Study
NOT COMPLETED
|
0
|
0
|
Reasons for withdrawal
Withdrawal data not reported
Baseline Characteristics
EMG Activation of Gluteal Musculature During Exercises With and Without Resistance
Baseline characteristics by cohort
| Measure |
Low Back Pain
n=15 Participants
Lower Body Exercises with and without resistance
Lower Body Exercises with and without resistance: lower body exercises with and without resistance designed to activate the gluteal/hip musculature
|
Healthy
n=15 Participants
Lower Body Exercises with and without resistance
Lower Body Exercises with and without resistance: lower body exercises with and without resistance designed to activate the gluteal/hip musculature
|
Total
n=30 Participants
Total of all reporting groups
|
|---|---|---|---|
|
Race/Ethnicity, Customized
Hispanic/Latino
|
1 participants
n=5 Participants
|
3 participants
n=7 Participants
|
4 participants
n=5 Participants
|
|
Age, Categorical
<=18 years
|
0 Participants
n=5 Participants
|
1 Participants
n=7 Participants
|
1 Participants
n=5 Participants
|
|
Age, Categorical
Between 18 and 65 years
|
15 Participants
n=5 Participants
|
14 Participants
n=7 Participants
|
29 Participants
n=5 Participants
|
|
Age, Categorical
>=65 years
|
0 Participants
n=5 Participants
|
0 Participants
n=7 Participants
|
0 Participants
n=5 Participants
|
|
Age, Continuous
|
36.2 years
n=5 Participants
|
29 years
n=7 Participants
|
32.6 years
n=5 Participants
|
|
Sex: Female, Male
Female
|
6 Participants
n=5 Participants
|
11 Participants
n=7 Participants
|
17 Participants
n=5 Participants
|
|
Sex: Female, Male
Male
|
9 Participants
n=5 Participants
|
4 Participants
n=7 Participants
|
13 Participants
n=5 Participants
|
|
Race/Ethnicity, Customized
Caucasian
|
11 participants
n=5 Participants
|
11 participants
n=7 Participants
|
22 participants
n=5 Participants
|
|
Race/Ethnicity, Customized
African American
|
2 participants
n=5 Participants
|
1 participants
n=7 Participants
|
3 participants
n=5 Participants
|
|
Race/Ethnicity, Customized
Asian
|
1 participants
n=5 Participants
|
0 participants
n=7 Participants
|
1 participants
n=5 Participants
|
PRIMARY outcome
Timeframe: One 40 minute sessionPercent of Maximal Voluntary Isometric Contraction was measured by placing EMG leads on selected muscles. Data was collected and analyzed with the MyoResearch XP Masters Edition (Noraxam Inc., Scottsdale, AZ). The EMG signals were smoothed and rectified and analyzed using a root-mean-square algorithm. We used visual onset and offset of the EMG signal amplitude to select the middle 3 of 5 trials. The middle three repetitions were analyzed. Average activation and peak activation were determined and then compared to the maximum voluntary isometric contraction (MVIC), captured during a manual muscle test, for each muscle group, and expressed as a %MVIC. The %MVIC can be greater than 100% since the MVIC is captured in a stationary, isometric position using manual force and all other activities are performed in motion against elastic or gravity resistance.
Outcome measures
| Measure |
Low Back Pain
n=15 Participants
Lower Body Exercises with and without resistance
Lower Body Exercises with and without resistance: lower body exercises with and without resistance designed to activate the gluteal/hip musculature
|
Healthy
n=15 Participants
Lower Body Exercises with and without resistance
Lower Body Exercises with and without resistance: lower body exercises with and without resistance designed to activate the gluteal/hip musculature
|
|---|---|---|
|
Percent of Maximal Voluntary Isometric Contraction (%MVIC)
Lunge
|
55.8 percentage of MVIC of gmax
Standard Deviation 12.8
|
25.1 percentage of MVIC of gmax
Standard Deviation 12.8
|
|
Percent of Maximal Voluntary Isometric Contraction (%MVIC)
Clams
|
62.7 percentage of MVIC of gmax
Standard Deviation 12.6
|
37 percentage of MVIC of gmax
Standard Deviation 12.6
|
|
Percent of Maximal Voluntary Isometric Contraction (%MVIC)
LungeR
|
50.9 percentage of MVIC of gmax
Standard Deviation 11.9
|
24.2 percentage of MVIC of gmax
Standard Deviation 11.9
|
|
Percent of Maximal Voluntary Isometric Contraction (%MVIC)
RunningMan
|
102.5 percentage of MVIC of gmax
Standard Deviation 23.7
|
56.1 percentage of MVIC of gmax
Standard Deviation 23.7
|
|
Percent of Maximal Voluntary Isometric Contraction (%MVIC)
ClamsR
|
73.5 percentage of MVIC of gmax
Standard Deviation 17.8
|
57.6 percentage of MVIC of gmax
Standard Deviation 17.8
|
|
Percent of Maximal Voluntary Isometric Contraction (%MVIC)
HipExt
|
41.5 percentage of MVIC of gmax
Standard Deviation 8.6
|
28.6 percentage of MVIC of gmax
Standard Deviation 8.6
|
|
Percent of Maximal Voluntary Isometric Contraction (%MVIC)
STHipExtR
|
44.1 percentage of MVIC of gmax
Standard Deviation 12.3
|
23.8 percentage of MVIC of gmax
Standard Deviation 12.3
|
|
Percent of Maximal Voluntary Isometric Contraction (%MVIC)
SLHipAB
|
59.3 percentage of MVIC of gmax
Standard Deviation 12.9
|
37.2 percentage of MVIC of gmax
Standard Deviation 12.9
|
|
Percent of Maximal Voluntary Isometric Contraction (%MVIC)
STHipAB_R
|
55.8 percentage of MVIC of gmax
Standard Deviation 11.9
|
37 percentage of MVIC of gmax
Standard Deviation 11.9
|
|
Percent of Maximal Voluntary Isometric Contraction (%MVIC)
QuadHipExt
|
44.9 percentage of MVIC of gmax
Standard Deviation 8
|
23.5 percentage of MVIC of gmax
Standard Deviation 8
|
|
Percent of Maximal Voluntary Isometric Contraction (%MVIC)
QuadHipExtR
|
54.1 percentage of MVIC of gmax
Standard Deviation 12.2
|
26.5 percentage of MVIC of gmax
Standard Deviation 12.2
|
|
Percent of Maximal Voluntary Isometric Contraction (%MVIC)
Bridge
|
33.6 percentage of MVIC of gmax
Standard Deviation 7.7
|
16.9 percentage of MVIC of gmax
Standard Deviation 7.7
|
|
Percent of Maximal Voluntary Isometric Contraction (%MVIC)
BridgeR
|
37.3 percentage of MVIC of gmax
Standard Deviation 6.9
|
20.8 percentage of MVIC of gmax
Standard Deviation 6.9
|
|
Percent of Maximal Voluntary Isometric Contraction (%MVIC)
FireHydrant
|
86.4 percentage of MVIC of gmax
Standard Deviation 16
|
52.5 percentage of MVIC of gmax
Standard Deviation 16
|
|
Percent of Maximal Voluntary Isometric Contraction (%MVIC)
FireHydrantR
|
93.9 percentage of MVIC of gmax
Standard Deviation 17.3
|
57.3 percentage of MVIC of gmax
Standard Deviation 17.3
|
|
Percent of Maximal Voluntary Isometric Contraction (%MVIC)
RunningManR
|
103.4 percentage of MVIC of gmax
Standard Deviation 21.5
|
56 percentage of MVIC of gmax
Standard Deviation 21.5
|
SECONDARY outcome
Timeframe: 16 exercises during one 40 minute sessionThera-Band(R) RISE (Resistance Intensity Scale for Exercise) Scale to measure amount of perceived exertion during resistance band exercises. This is a scale 0 to 10, 0 being extremely easy and 10 being extremely hard. The subject rated the intensity or resistance felt on each exercise on this scale. The ideal range for an exercise is in the middle of the scale (4-7) where the subject is feeling resistance but is not maximally exerted.
Outcome measures
| Measure |
Low Back Pain
n=15 Participants
Lower Body Exercises with and without resistance
Lower Body Exercises with and without resistance: lower body exercises with and without resistance designed to activate the gluteal/hip musculature
|
Healthy
n=15 Participants
Lower Body Exercises with and without resistance
Lower Body Exercises with and without resistance: lower body exercises with and without resistance designed to activate the gluteal/hip musculature
|
|---|---|---|
|
Perceived Exertion
SLAB
|
1.5 units on a scale
Interval 0.0 to 3.0
|
1.8 units on a scale
Interval 0.0 to 4.0
|
|
Perceived Exertion
StABR
|
3.4 units on a scale
Interval 1.0 to 5.0
|
2.2 units on a scale
Interval 0.0 to 6.0
|
|
Perceived Exertion
Clams
|
1.7 units on a scale
Interval 0.0 to 7.0
|
2.1 units on a scale
Interval 0.0 to 5.0
|
|
Perceived Exertion
ClamsR
|
2.8 units on a scale
Interval 0.0 to 6.0
|
2.9 units on a scale
Interval 0.0 to 6.0
|
|
Perceived Exertion
PrHipExt
|
2.5 units on a scale
Interval 0.0 to 8.0
|
2.3 units on a scale
Interval 0.0 to 5.0
|
|
Perceived Exertion
StHipExt
|
3 units on a scale
Interval 1.0 to 5.0
|
2.7 units on a scale
Interval 0.0 to 6.0
|
|
Perceived Exertion
QHipExt
|
2.3 units on a scale
Interval 1.0 to 6.0
|
1.3 units on a scale
Interval 0.0 to 3.0
|
|
Perceived Exertion
QHipExtR
|
3.3 units on a scale
Interval 1.0 to 6.0
|
2.3 units on a scale
Interval 1.0 to 4.0
|
|
Perceived Exertion
Bridge
|
1.9 units on a scale
Interval 0.0 to 5.0
|
1.5 units on a scale
Interval 0.0 to 6.0
|
|
Perceived Exertion
BridgeR
|
2.5 units on a scale
Interval 1.0 to 4.0
|
2.1 units on a scale
Interval 0.0 to 5.0
|
|
Perceived Exertion
Fire Hydrant
|
2.4 units on a scale
Interval 1.0 to 7.0
|
2.3 units on a scale
Interval 0.0 to 4.0
|
|
Perceived Exertion
Fire HydrantR
|
3.7 units on a scale
Interval 1.0 to 6.0
|
3.2 units on a scale
Interval 1.0 to 5.0
|
|
Perceived Exertion
Lunge
|
2.9 units on a scale
Interval 0.0 to 8.0
|
2.2 units on a scale
Interval 0.0 to 5.0
|
|
Perceived Exertion
LungeR
|
2.9 units on a scale
Interval 0.0 to 6.0
|
2.7 units on a scale
Interval 0.0 to 5.0
|
|
Perceived Exertion
Running Man
|
3.4 units on a scale
Interval 0.0 to 8.0
|
3.2 units on a scale
Interval 1.0 to 5.0
|
|
Perceived Exertion
RunningManR
|
4.4 units on a scale
Interval 1.0 to 8.0
|
4.3 units on a scale
Interval 1.0 to 6.0
|
Adverse Events
Low Back Pain
Healthy
Serious adverse events
Adverse event data not reported
Other adverse events
Adverse event data not reported
Additional Information
Jena Etnoyer, Clinical Research Coordinator
Sport & Spine Rehab Clinical Research Foundation
Results disclosure agreements
- Principal investigator is a sponsor employee
- Publication restrictions are in place