Leg Muscle Activity Measured Via Electromyography in Back Squat Variations

NCT03902730 | Completed

• 1 other identifier: EMG-1
• Study Type: interventional
• Target: 7
• Locations: 1 country
• Sites: 1

Brief 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.

Conditions

Surface Electromyography; Muscular Fatigue

Keywords

Electromyography; Resistance trained

Outcome Measures

Primary Outcomes (1)

• 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 Outcomes (1)

• Change from Baseline Mean Muscle Activity Between Four Back Squat Variations

  Up to 4 weeks

Study Arms (4)

Back Squat Variation One

OTHER

In a randomized order, traditional back squat will be completed.

Other: Traditional Back Squat

Back Squat Variation Two

OTHER

In a randomized order, barefoot back squat will be completed.

Other: Barefoot Back Squat

Back Squat Variation Three

OTHER

In a randomized order, box squat will be completed.

Other: Box Squat

Back Squat Variation Four

OTHER

In a randomized order, traditional back squat with chains will be completed.

Other: Traditional Back Squat with Chains

Interventions

Traditional Back Squat OTHER

Participants will complete traditional back squat in this four treatment crossover design.

Back Squat Variation One

Barefoot Back Squat OTHER

Participants will complete barefoot back squat in this four treatment crossover design.

Back Squat Variation Two

Box Squat OTHER

Participants will complete box squat in this four treatment crossover design.

Back Squat Variation Three

Traditional Back Squat with Chains OTHER

Participants will complete traditional back squat with chains in this four treatment crossover design.

Back Squat Variation Four

Eligibility Criteria

• Age: 18 Years - 30 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• 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

You may not qualify if:

• 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

Sponsors & Collaborators

• University of Mary Hardin-Baylor: lead

Study Sites (1)

UMHB Human Performance Lab

Belton, Texas, 76513, United States

Location

Study Officials

• Lemuel W Taylor IV, PhD

  UMHB Human Performance Lab

  PRINCIPAL INVESTIGATOR

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: PARTICIPANT
• Masking Details: Investigators will randomize treatments for all participants.
• Purpose: OTHER
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Director of Research in HPL

Model Details: Participants will complete all four trials in a crossover design. A one week washout period is required between treatments.

Study Record Dates

• First Submitted: March 26, 2019
• First Posted: April 4, 2019
• Study Start: May 1, 2019
• Primary Completion: September 25, 2021
• Study Completion: September 25, 2021
• Last Updated: September 28, 2021

Record last verified: 2021-09

Data Sharing

• IPD Sharing: Will not share

Locations

US (1)