Session RPE (Carl Foster method) uses a 0-10 CR10 scale rating of perceived exertion collected 30 minutes after exercise. Load = RPE x duration in minutes. A 90-minute session at RPE 6 = 540 arbitrary units.

How does session RPE compare to HR-based load?

Session RPE correlates well with HR-based training impulse for endurance sports. It captures both cardiovascular and muscular load, making it better than HR alone for strength or team sports.

What is a safe weekly training load?

Most athletes safely handle 400-1200 arbitrary units per week depending on sport and fitness. A sudden increase above 10% per week or ACWR above 1.5 is associated with elevated injury risk.

Session RPE Training Load Calculator

Calculate training load using session RPE: Load = RPE (0-10 scale) x session duration (minutes).

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Frequently Asked Questions

What is session RPE?

How does session RPE compare to HR-based load?

What is a safe weekly training load?