Aerobic Run:

1/4 - 1/2 of Lydiard Effort Chart

* Yellow highlight = the best suggested target RPE

Rate of Perceived Exertion

RPE Intensity Breathing Talking % VO2 Max
3 Moderate Comfortable Easy 55
4 Somewhat strong Noticeable Somewhat easy 65
5 Strong Deep, but steady Challenging but in control 75