Leg Muscle Activity Measured Via Electromyography in Back Squat Variations

Surface Electromyography Clinical Trial

Official title:

Lower Limb Muscle Activity and Recruitment Patterns Measured Via Electromyography in Back Squat Variations

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT03902730
• Other study ID #: EMG-1
• Status: Completed
• Phase: N/A
• Start date: May 1, 2019
• Est. completion date: September 25, 2021

Study information

• Verified date: September 2021
• Source: University of Mary Hardin-Baylor
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The purpose of the study is to see how different forms of the squat exercise change my body's leg muscle activity. Four forms of the traditional back squat will be used: traditional back squat, barefoot squat, box squat, and traditional back squat with chains.

Description:

Resistance exercise has various benefits that promote health and reduce the chance of chronic disease, but the biggest benefit may be found in the effects on maintaining muscle mass throughout the aging process. The implications resistance training has on an individual's ability to function throughout the day with less fatigue whilst performing tasks at an easier level can all be related to improved strength and endurance that comes with resistance training. Furthermore, how the nervous system adapts and sends signals to the working muscles are of great interest as neuromuscular adaptations help in coordination, balance, and agility. Variations of the same style of exercise have been theorized to improve and/or change the adaptations that can occur. Thus, the purpose of this study would be to assess surface electromyography (sEMG) activations on 4 anatomical sites simultaneously during the squat exercise under varying conditions.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 7
• Est. completion date: September 25, 2021
• Est. primary completion date: September 25, 2021
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 30 Years

Eligibility

Inclusion Criteria:

• Participants will be males and females between the ages of 18 - 30 years

• Participant has provided written and dated informed consent to participate

• Participant is willing and able to comply with the protocol

• Participant is apparently healthy and free from disease, as determined by a health history questionnaire

• Participant agrees to abstain from lower body exercise 3 days prior to each testing visit

• Participant has completed at least 1 lower body workout every week for the past 6 months

Exclusion Criteria:

• Participant reports any unusual adverse events associated with this study that in consultation with their physician recommends removal from the study

• Participant begins consumption of new supplement during the timeline of this study

• Participant is unable to refrain from consuming pre-workout supplement prior to testing sessions

• Participant is unwilling to refrain from lower body exercise at least 3 days prior to each testing session

Related Conditions & MeSH terms

• Fatigue
• Muscular Fatigue
• Surface Electromyography

Intervention

Other:
• Traditional Back Squat
Participants will complete traditional back squat in this four treatment crossover design.
• Barefoot Back Squat
Participants will complete barefoot back squat in this four treatment crossover design.
• Box Squat
Participants will complete box squat in this four treatment crossover design.
• Traditional Back Squat with Chains
Participants will complete traditional back squat with chains in this four treatment crossover design.

Locations

Country	Name	City	State
United States	UMHB Human Performance Lab	Belton	Texas

Sponsors (1)

Lead Sponsor	Collaborator
University of Mary Hardin-Baylor

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Change from Baseline Mean Peak Muscle Activity Between Four Back Squat Variations	Participants will complete 5 sets of 10 repetitions at 70% of their 1 repetition maximum with 1-minute rest in between each set under different variations of the back squat. Each week, participants will be randomly assigned to complete a variation of back squat. Under each variation, surface electromyography recordings will consist of mean peak muscle activity as measured via BIOPAC BSL for the first and last sets of the training protocol. Thus, changes between first and last sets of the training protocol will be assessed for changes as well as comparisons between each variation of back squat to assess changes.	Up to 4 weeks
Secondary	Change from Baseline Mean Muscle Activity Between Four Back Squat Variations	Participants will complete 5 sets of 10 repetitions at 70% of their 1 repetition maximum with 1-minute rest in between each set under different variations of the back squat. Each week, participants will be randomly assigned to complete a variation of back squat. Under each variation, surface electromyography recordings will consist of mean muscle activity as measured via BIOPAC BSL for the first and last sets of the training protocol. Thus, changes between first and last sets of the training protocol will be assessed for changes as well as comparisons between each variation of back squat to assess changes.	Up to 4 weeks