Tag: rpe
-
HRV Explained for Coaches: What It Actually Measures, When to Use It, and When to Ignore It
HRV is a genuinely useful coaching tool. It’s also widely misunderstood. Here’s what the research says about when to act on it, when to ignore it, and how to combine it with RPE for a clearer picture.
-
Reps in reserve
Reps in reserve is the strength-training cousin of Borg’s perceived exertion scale, applied per set rather than per session. Unlike the other measurement instruments in this series, RIR has no single inventor — it came from a coach in 2008, a research group in 2012, and another in 2016. A history of how a powerlifting…