Research
Adherence
Rating of Perceived Exertion (RPE) correlates with blood lactate levels in high repetition resistance training protocols, suggesting RPE can be used as a non-invasive proxy for metabolic stress.
You can use how hard a set feels (RPE) to estimate your metabolic stress. In high-rep sets, if it feels very hard (high RPE), your lactate levels are likely elevated, indicating significant metabolic stress.
GoodSupportsMEDIUM confidence
a significant correlation was found (rs = 0.35, p < 0.01) between the [bLa-] at 2 minutes after physical exertion and the RPE.
Why this rating
Statistically significant correlation found in a controlled crossover study.
Source
Comparison of blood lactate and perceived exertion responses in two matched time-under-tension protocols
Salvador Vargas-Molina et al. · PLoS ONE · 2020
crossover · n=40Cited 27×
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