What is the Rate of Perceived Exertion (RPE) scale?

A Rate of Perceived Exertion (RPE) scale is a method used to determine an athlete’s working intensity level. Accurately using an RPE scale correlates to understanding training heart rate, percentage of VO2 max and breathing rate.

There are a number of RPE scales, but we utilize a 10-point scale:

  • 0 – Nothing at all
  • 1 – Very light, rest
  • 2 – 50% effort, fairly light, gentle walking
  • 3 – Moderate
  • 4 – 70 % effort, somewhat hard, steady pace
  • 5 – 80% effort, hard
  • 6
  • 7 – 90% effort, very hard
  • 8
  • 9 – 100% effort, very, very hard
  • 10 – exhaustion
adapted from CrossFit Endurance