Research
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Total repetitions per set do not seem to affect RIR accuracy when close to failure (i.e. 9RPE).
When training close to failure, perceived exertion ratings may be more reliable regardless of total repetitions.
StrongRefutesmedium confidence
However, total repetitions per set do not seem to effect RIR accuracy when close to failure (i.e. 9RPE).
Why this rating
Based on the statistical analysis presented in the abstract.
Source
Total Repetitions Per Set Effects Repetitions in Reserve-based Rating of Perceived Exertion Accuracy
Jared H. Perlmutter et al. · Medicine & Science in Sports & Exercise · 2017
DOI 10.1249/01.mss.0000519863.21383.4c
cross-sectional · n=25
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- There are moderate and significant correlations between total repetitions performed and the RIR difference at the called 5RPE (r=0.64, p=0.01) and 7RPE (r=0.56, p=0.004).Strong
- The greater amount of repetitions performed per set is related to increased difficulty to accurately gauge RIR further from failure.Strong
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