Test-retest Reliability of sEMG to Measure Fatigue in Adolescents

Not Applicable

Recruiting

• Conditions: Healthy Adolescents

• Registration Number: NCT07161531
• Lead Sponsor: Universiteit Antwerpen

Brief Summary

This cross-sectional study aims to determine the test-retest reliability of surface electromyography (sEMG) outcomes in detecting levels of fatigue among healthy adolescents engaged in physical activities. It seeks to evaluate the consistency of sEMG parameters across two test sessions and correlate these measurements with both performance metrics and subjective fatigue assessments.

Participants will perform repetitive squatting until volitional exhaustion while their muscular activity is recorded. They will do so on two different test sessions with an interval of one week in between.

Detailed Description

Not available

Study Timeline

• Study Start: 2025-03-12
• Study First Submitted: 2025-08-23
• Status Verified: 2025-09
• Study First Submitted QC: 2025-09-03
• Last Update Submitted: 2025-09-03
• Study First Posted: 2025-09-08
• Last Update Posted: 2025-09-08
• Primary Completion: 2025-12-31
• Study Completion: 2026-06-30

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 27

Inclusion Criteria

• engage in regular physical activity, such as sports or dance

Exclusion Criteria

• neuromuscular disorders
• conditions that affect muscle function

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Primary Outcome Measures

Name	Time	Method
sEMG median power frequency (MPF) - test	first test session at day 1	A parameter used to analyze the frequency content of the electrical signals generated by muscle activity. Changes in the MPF can indicate alterations in muscle fiber recruitment and metabolic changes during sustained muscle contractions
sEMG median power frequency - retest	second test session after 1 week	A parameter used to analyze the frequency content of the electrical signals generated by muscle activity. Changes in the MPF can indicate alterations in muscle fiber recruitment and metabolic changes during sustained muscle contractions
sEMG RMS amplitude - test	first test session at day 1	A single value that represents the magnitude of the sEMG signal over a specified period of time, higher RMS values indicate greater muscle activation.
sEMG RMS amplitude - retest	second test session after 1 week	A single value that represents the magnitude of the sEMG signal over a specified period of time, higher RMS values indicate greater muscle activation.

Secondary Outcome Measures

Name	Time	Method
VAS score - test	first test session at day 1	subjective fatigue score
VAS score - retest	second session after 1 week	subjective fatigue score

Trial Locations

Locations (1)

Universiteit Antwerpen, Department of Rehabilitation Sciences and Physiotherapy, Research group MOVANT; 🇧🇪 Wilrijk, Belgium