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Posterior Chain EMG Patterns in Athletes With and Without Hamstring Injury

NCT07171385 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 42

Last updated 2025-09-12

No results posted yet for this study

Summary

This cross-sectional observational study investigated posterior chain muscle activation patterns in football players with and without a history of hamstring strain injury. Forty-two male athletes were assessed using surface electromyography (sEMG) during Nordic Hamstring Curl, Kettlebell Swing, and Supine Sliding Leg Curl exercises. Results demonstrated persistent deficits in biceps femoris, gluteus maximus, latissimus dorsi, and iliocostalis lumborum activation in previously injured athletes compared to controls, suggesting that neuromuscular alterations extend beyond the hamstring itself and may increase reinjury risk.

Conditions

Interventions

OTHER

Nordic Hamstring Curl (NHC)

Knee-dominant eccentric hamstring strengthening exercise performed on a padded surface. Participants control the descent of the torso while knees remain fixed, emphasizing eccentric activation of hamstring muscles.

OTHER

Kettlebell Swing (KS)

Hip-dominant ballistic movement involving rapid hip flexion-extension using a kettlebell (16-20 kg depending on participant's ability). Each repetition includes concentric, isometric, and eccentric phases standardized by metronome pacing.

OTHER

Supine Sliding Single-Leg Curl (SSLC)

Closed-chain exercise performed in supine position with heels placed on sliding discs. One leg is extended while the other leg performs concentric-eccentric sliding curl.

Sponsors & Collaborators

  • Mersin University

    collaborator OTHER

  • T.C. Dumlupınar Üniversitesi

    collaborator OTHER

  • Eskisehir Technical University

    collaborator OTHER

  • Istanbul Gelisim University

    collaborator OTHER

  • Çanakkale Onsekiz Mart University

    collaborator OTHER

  • Saglik Bilimleri Universitesi

    collaborator OTHER

  • Manisa Celal Bayar University

    collaborator OTHER

  • Ankara Yildirim Beyazıt University

    lead OTHER

Eligibility

Min Age
18 Years
Max Age
30 Years
Sex
MALE
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2023-11-11
Primary Completion
2023-12-10
Completion
2024-03-10

Countries

  • Turkey (Türkiye)

Study Locations

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Entities

Diseases

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 NCT07171385 on ClinicalTrials.gov