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Latissimus Dorsi Activity During Different Exercises

NCT07297771 · Status: RECRUITING · Type: OBSERVATIONAL · Enrollment: 30

Last updated 2025-12-29

No results posted yet for this study

Summary

This single-visit, laboratory study will quantify latissimus dorsi activation during standardized band/body-weight exercises commonly used in rehabilitation (e.g., standing bent-over row, inferior glide, seated press-up, body-lifting). Healthy, physically active adults (18-40 y; Tegner ≥5) will perform three repetitions per exercise with metronome-paced phases (≈3 s concentric, 3 s isometric, 3 s eccentric), 5-s rest between repetitions and 2-min between exercises; load will be individualized to reach OMNI RPE 6-8. Surface EMG (TeleMyo DTS; Noraxon) will be recorded from the latissimus dorsi (medial and lateral) and selected synergists (teres major, infraspinatus, posterior deltoid, triceps); electrode placement will follow SENIAM recommendations. Signals will be band-pass filtered (20-500 Hz), rectified, RMS-smoothed with a 100-ms window, and normalized to %MVIC using standardized MVC tests; exercise/MVC order will be randomized to limit bias. The primary outcome is mean normalized EMG amplitude per exercise; secondary outcomes include peak amplitude and categorical activation levels (low ≤20% MVIC, moderate 21-40%, high 41-60%, very high \>60%). The study involves minimal risk (possible mild skin irritation under electrodes and transient post-exercise fatigue).

Conditions

  • Muscle Activation

Interventions

BEHAVIORAL

Exercise

Participants will perform six standardized pulling tasks-inferior glide, low row, seated row, bent-over row, seated press-up, and body lifting-using a resistance band or body weight. Each exercise is done for 3 repetitions with \~5 s between reps and \~2 min between exercises. Resisted exercises follow a metronome-paced 3 s concentric / 3 s isometric / 3 s eccentric tempo; purely isometric tasks are held for 3 s. Load is individualized with the OMNI 0-10 scale and increased during up to 10 familiarization reps until perceived exertion reaches 6-8/10. Exercise order is randomized to minimize ordering effects.

Sponsors & Collaborators

  • Hacettepe University

    lead OTHER

Eligibility

Min Age
18 Years
Max Age
40 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2025-10-12
Primary Completion
2026-02-25
Completion
2026-02-25

Countries

  • Turkey (Türkiye)

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 NCT07297771 on ClinicalTrials.gov