Glossary

RPE (Rate of Perceived Exertion)

A 1-10 self-report of how hard a training session or competition felt, used as the intensity input to session-RPE training load calculations.

Published 2026-04-23

RPE, short for Rate of Perceived Exertion, is a subjective 1-10 rating an athlete assigns to a session after it ends, capturing how physically demanding the work felt. At the youth and amateur level it is the most widely used intensity input to training load calculations because it is free, fast, and reasonably accurate.

The scale

The modern youth-friendly version runs 1 to 10:

  • 1-2 — very easy, could talk comfortably the entire time
  • 3-4 — moderate, could hold a conversation with effort
  • 5-6 — hard, short sentences only
  • 7-8 — very hard, single words between breaths
  • 9-10 — maximal, could not continue for long

Athletes log a single number after the session; for more detail some programs log separate cardio and neuromuscular RPEs.

How it’s used

Combined with duration, RPE becomes session-RPE load:

Session load = duration (minutes) × RPE (1-10)

Those per-session loads are summed weekly and compared against a rolling average to produce the acute:chronic workload ratio — the signal most commonly used to detect dangerous spikes in training.

Why it works despite being subjective

RPE tracks internal, individualized response — the same 60 minutes of the same session will stress two athletes differently, and RPE captures that. External measures like distance or reps don’t. In field sport research, session-RPE load correlates with heart-rate-derived load closely enough for practical monitoring without the equipment cost.

Common mistakes

  • Logging before the session has fully finished — the last block often changes the rating
  • Using 1-20 (“Borg RPE”) and 1-10 interchangeably (they are different scales)
  • Anchoring the scale to the coach’s perception instead of the athlete’s
  • Treating any single-session RPE as meaningful — the signal is in the trend