Research
Energy balance
The 4-min time trials (TTs) have a high reliability with an intraclass correlation coefficient (ICC) of .98.
Practitioners can confidently use 4-min TTs to assess cycling performance in trained cyclists.
StrongSupportsmedium confidence
Pairs of 4-min TTs... ICC = .98
Why this rating
The study design includes multiple trials and statistical analysis of reliability.
Source
The Reliability of 4-Minute and 20-Minute Time Trials and Their Relationships to Functional Threshold Power in Trained Cyclists
Martin J. MacInnis et al. · International Journal of Sports Physiology and Performance · 2018
DOI 10.1123/ijspp.2018-0100
other · n=8Cited 45×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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