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Angle-Specific Upper and Lower Body Muscle Activation in Suspension Training

NCT07127211 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 26

Last updated 2025-08-20

No results posted yet for this study

Summary

The study aims to compare differences in muscle activation during push-ups performed at five body angles using different suspension methods. The investigators will recruit 20 healthy men with resistance-training experience. Each participant will perform push-ups under three suspension conditions (no suspension, hands suspended, and feet suspended) at +30°, +15°, 0°, -15°, and -30°. For each angle, participants will complete five repetitions with 3-5 minutes of rest between angles; at least 48 hours will separate suspension conditions. Surface electromyography (EMG) will record activity of the pectoralis major, anterior deltoid, triceps brachii, upper trapezius, and serratus anterior. EMG amplitudes will be normalized to maximal voluntary isometric contraction (%MVIC). Data will be analyzed using a repeated-measures two-way ANOVA to test the effects of suspension type and angle on muscle activation. The a priori hypothesis is that feet-suspended push-ups will elicit greater activation than other conditions, and that lower body angles will be associated with higher activation levels.

Conditions

  • Healthy Volunteers

Interventions

BEHAVIORAL

Suspension and Stable Push-Up Training at Multiple Angles

Participants will perform push-ups under three suspension conditions: (1) no suspension (hands and feet on a stable surface), (2) hands suspended using TRX straps, and (3) feet suspended using TRX straps. Each condition will be performed at five different body angles relative to the floor: +30°, +15°, 0°, -15°, and -30° (0° defined as shoulder joints aligned with ankle joints when arms are extended). For each angle, participants will complete five repetitions, with 3-5 minutes of rest between angles and at least 48 hours of rest between suspension conditions to minimize fatigue effects. All exercises will be conducted under supervision to ensure correct form and safety. Surface electromyography (EMG) will record muscle activity from the pectoralis major, anterior deltoid, triceps brachii, upper trapezius, and serratus anterior. EMG data will be processed as root mean square (RMS) and normalized to maximal voluntary isometric contraction (%MVIC). This intervention is designed to dete

Sponsors & Collaborators

  • TSUNG-LIN CHIANG

    lead OTHER

Eligibility

Sex
MALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2019-01-03
Primary Completion
2019-11-22
Completion
2019-11-22

Countries

  • Taiwan

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07127211 on ClinicalTrials.gov