Latissimus Dorsi Activity During Different Exercises

Recruiting now

Conditions studied: Muscle Activation

In brief

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).

Key facts

Study ID

NCT07297771

Run by

Hacettepe University

People needed

30

Starts

2025-10-12

Expected to finish

2026-02-25

Last updated by the study team

2025-12-29

Who can join

Age: 18 and older, up to 40. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Age 18-40 years
• No range-of-motion restriction at the glenohumeral joint
• No shoulder, cervical, or lumbar region complaints/injury within the past 6 months
• No systemic or neurological disease
• Competent to consent and provides written informed consent
• Tegner Activity Scale ≥ 5

You may not qualify if…

• Body mass index (BMI) > 25 kg/m²

Where it is running

• Hacettepe University — Ankara, Altındag, Turkey (Türkiye) (enrolling)

Full record on ClinicalTrials.gov

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