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Effects of a Familiarization Protocol on Time to Exhaustion Performance

NCT07735507 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 20

Last updated 2026-07-30

No results posted yet for this study

Summary

Familiarization is widely recommended before exercise performance testing to improve measurement consistency and reduce learning effects. However, practical constraints often limit researchers to a single-or no-familiarization session, raising the possibility that improvements observed following an intervention may partially reflect increased familiarity with the testing procedure rather than genuine physiological adaptations. This issue may be particularly relevant for time-to-exhaustion (TTE) protocols, which have been reported to exhibit greater between-session variability than self-paced endurance tests.

This exploratory analysis examined the magnitude of the familiarization effect during treadmill TTE testing by comparing a familiarization trial with a subsequent experimental trial. Linear mixed-effects models will be used to evaluate changes in TTE performance while accounting for pre-exercise fatigue and recovery, and between-session agreement was assessed using intraclass correlation coefficients and Bland-Altman analysis.

Conditions

  • Learning

Interventions

OTHER

time to exhaustion

Time to exhaustion performed at 95% VO2max

Sponsors & Collaborators

  • University of Maia

    lead OTHER

Study Design

Allocation
NON_RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Model
SINGLE_GROUP

Eligibility

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

Timeline & Regulatory

Start
2026-09-01
Primary Completion
2026-10-01
Completion
2027-01-30

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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 NCT07735507 on ClinicalTrials.gov