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Sensitivity of Load-Velocity Measures for Detecting Fatigue During Smith-Machine Squats

NCT07307963 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 28

Last updated 2025-12-29

No results posted yet for this study

Summary

The purpose of this study is to determine whether load-velocity (L-V) relationship variables (L0, v0, and Aline) are sensitive indicators of fatigue produced by different squat fatigue protocols. The study aims to answer how accurately these L-V measures reflect changes in performance, particularly changes in one-repetition maximum (1RM), after varying levels of induced fatigue. Twenty-eight resistance-trained men completed three sessions involving different fatigue protocols or no training. L-V variables measured before and after each protocol were compared. The findings will help determine whether L-V relationship parameters can be used as practical and sensitive tools for monitoring fatigue during resistance training.

Conditions

  • Neuromuscular Fatigue
  • Load-velocity Variables

Interventions

OTHER

Control Protocol (No Training)

This intervention consists of no training or exercise during the session. Participants assigned to the control arm rest for the entire duration between the pre-session and post-session load-velocity assessments. No fatigue-inducing activity, resistance exercise, or additional intervention is administered, allowing all observed changes to reflect normal variation without training-related fatigue.

OTHER

Moderate-fatigue

Participants performed five sets of Smith-machine squats at 70% of their 1-repetition maximum (1RM), completing half of the maximum possible repetitions in each set. This protocol was designed to induce a moderate level of neuromuscular fatigue without reaching complete exhaustion.

OTHER

High-fatigue

This intervention involves no training or fatigue-inducing activity. Participants do not perform any squat sets between the pre- and post-session incremental loading tests. This condition serves as a baseline to determine natural variations in load-velocity measures, thereby eliminating the influence of exercise-induced fatigue.

Sponsors & Collaborators

  • Istanbul Gelisim University

    lead OTHER

Principal Investigators

  • Deniz Şentürk, PhD · Istanbul Gelisim University

Eligibility

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

Timeline & Regulatory

Start
2024-05-05
Primary Completion
2024-05-10
Completion
2024-10-10

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 NCT07307963 on ClinicalTrials.gov