Healthy VolunteersNCT07127211
Angle-Specific Upper and Lower Body Muscle Activation in Suspension Training
An observational study of Healthy Volunteers, run by TSUNG-LIN CHIANG at 1 site in Taiwan.
Trial 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. Read more about this study
- Who is it for?
- Any age, men onlyHealthy volunteers can take part
- Conditions the study is for
- Healthy Volunteers
- What is being tested?
- Suspension and Stable Push-Up Training at Multiple Angles
- Type of treatment
- Lifestyle or therapy programme
- How many people
- 26 participants
- Where
- 1 siteTaiwan
- Study dates
- 3 Jan 2019to 22 Nov 2019
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- Men only
- Healthy volunteers accepted
- Child, Adult, Older adult
Study population: Healthy male adults with at least 3 months of regular resistance-training experience, capable of independently performing a standard push-up with proper form. Participants will be recruited from university sports facilities and local fitness centers through flyers, online announcements, and word of mouth.
Who may be able to join
- Healthy male adults with ≥3 months of regular resistance-training experience.
- Able to independently perform a standard push-up with proper form.
- Willing to follow pre-session restrictions (e.g., avoid strenuous exercise within 24 h) and provide written informed consent.
Who cannot join
- Physician-diagnosed cardiovascular disease, musculoskeletal disorders, chronic pulmonary disease, or arthritis.
- Major surgery or severe injury within the past 12 months that affects physical activity.
- Current pain, injury, or functional limitation of the upper or lower limbs or trunk that would interfere with push-up performance.
- Any medical condition judged by the investigators to make participation unsafe.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Angle-Specific Upper and Lower Body Muscle Activation in Suspension Push-Ups: An Electromyographic Analysis Across Different Body Angles
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
- Being tested
- Suspension and Stable Push-Up Training at Multiple Angles
- Keywords
- Suspension Training, Muscle Activation, Angle-Specific Training, unstable training, strength training
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Suspension and Stable Push-Up Training at Multiple AnglesBehavioural
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
What is being measured
The primary outcome is the main question the study is designed to answer.
Muscle Activation (%MVIC) of Upper Body Muscles During Suspension and Stable Push-Ups at Different Angles
Surface electromyography (EMG) will measure the root mean square (RMS) activity of the pectoralis major, anterior deltoid, triceps brachii, upper trapezius, and serratus anterior during push-ups performed under three suspension conditions (no suspension, hands suspended, feet suspended) at five body angles (+30°, +15°, 0°, -15°, -30°). RMS values will be normalized to maximal voluntary isometric contraction (%MVIC). Comparisons will be made using repeated-measures two-way ANOVA to determine the effects of suspension condition and angle on muscle activation.
Measured: Baseline measurement during each exercise condition within 4 weeks of study start
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted17 Aug 2025
- Study start3 Jan 2019
- Primary completion22 Nov 2019
- Study completion22 Nov 2019
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Healthy VolunteersStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Enrolment
- 26 participants (actual)
Sponsor and investigators
- Lead sponsor
- TSUNG-LIN CHIANG
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor-investigator, TSUNG-LIN CHIANG, Chinese Culture University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07127211
- Sponsor's protocol ID
- No. 10711HS080
- Status last verified
- Aug 2025
- First submitted
- 11 Aug 2025
- Last updated
- 20 Aug 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 20 Aug 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Angle-Specific Upper and Lower Body Muscle Activation in Suspension Push-Ups: An Electromyographic Analysis Across Different Body Angles
- ClinicalTrials.gov ID
- NCT07127211
- Acronym / sponsor ID
- No. 10711HS080
- Conditions
- Healthy Volunteers
- Keywords
- Suspension Training, Muscle Activation, Angle-Specific Training, unstable training, strength training
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 26 participants (actual)
- Lead sponsor
- TSUNG-LIN CHIANGUniversity, hospital or other
- Study start
- 3 Jan 2019 (actual)
- Primary completion
- 22 Nov 2019 (actual)
- Study completion
- 22 Nov 2019 (actual)
- First posted
- 17 Aug 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Study design
- Observational model
- Cohort
- Time perspective
- Cross-sectional
Who may qualify
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult, Older adult
- Study population
- Healthy male adults with at least 3 months of regular resistance-training experience, capable of independently performing a standard push-up with proper form. Participants will be recruited from university sports facilities and local fitness centers through flyers, online announcements, and word of mouth.
Key inclusion criteria (3 listed)
- Healthy male adults with ≥3 months of regular resistance-training experience.
- Able to independently perform a standard push-up with proper form.
- Willing to follow pre-session restrictions (e.g., avoid strenuous exercise within 24 h) and provide written informed consent.
Key exclusion criteria (4 listed)
- Physician-diagnosed cardiovascular disease, musculoskeletal disorders, chronic pulmonary disease, or arthritis.
- Major surgery or severe injury within the past 12 months that affects physical activity.
- Current pain, injury, or functional limitation of the upper or lower limbs or trunk that would interfere with push-up performance.
- Any medical condition judged by the investigators to make participation unsafe.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Suspension and Stable Push-Up Training at Multiple AnglesParticipants 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 | Behavioural | – |
Primary outcome
Muscle Activation (%MVIC) of Upper Body Muscles During Suspension and Stable Push-Ups at Different Angles
Time frame: Baseline measurement during each exercise condition within 4 weeks of study start
Surface electromyography (EMG) will measure the root mean square (RMS) activity of the pectoralis major, anterior deltoid, triceps brachii, upper trapezius, and serratus anterior during push-ups performed under three suspension conditions (no suspension, hands suspended, feet suspended) at five body angles (+30°, +15°, 0°, -15°, -30°). RMS values will be normalized to maximal voluntary isometric contraction (%MVIC). Comparisons will be made using repeated-measures two-way ANOVA to determine the effects of suspension condition and angle on muscle activation.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 20 Aug 2025.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Healthy Volunteers, run by TSUNG-LIN CHIANG at 1 site in Taiwan.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 20 Aug 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Taiwan. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Muscle Activation (%MVIC) of Upper Body Muscles During Suspension and Stable Push-Ups at Different Angles (time frame: Baseline measurement during each exercise condition within 4 weeks of study start). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 20 Aug 2025.