Does 420 AU mean high injury risk?

No. This calculator provides no injury-risk model or threshold.

Can it tell me whether I am recovered?

No. It does not assess sleep, soreness, illness, pain, performance, or readiness.

Should I use peak RPE?

No. Session RPE is intended as a global rating of the entire session under a consistent protocol.

Can I compare my AU with another athlete?

Direct comparisons are limited because perceived exertion, sport context, and collection practice differ.

Record Session-RPE Training Load

Multiply whole-session perceived exertion by minutes, with the output clearly labeled as arbitrary units.

Published session-RPE method

Simple reproducible record

No unsupported risk prediction

Session RPE (0–10)Your global rating of the entire session, collected consistently after the session.Session duration (minutes)

How to Calculate Session Load

Apply one consistent session-RPE collection protocol across sessions.

Complete the session and note its duration.

Rate the whole session

Do not substitute the hardest moment or an average heart-rate zone for session RPE.

One Internal-Load Record

The Foster session-RPE method multiplies perceived exertion by duration. AU are useful for within-person logging but are not energy, mechanical work, or a universal dose.

Session-Load Examples

Hard 60-minute session

Whole-session RPE and minutes

sessionRpe:7

durationMinutes:60

Arbitrary units

420 AU

7 × 60 = 420.

Rest or zero-duration record

Whole-session RPE and minutes

sessionRpe:0

durationMinutes:60

Arbitrary units

0 AU

A zero RPE produces zero by the defined arithmetic; check whether that accurately describes the record.

Protocol before precision

Collection timing and scale instructions should stay consistent when following trends.

Frequently Asked Questions

Arbitrary units indicate that the product is a monitoring index, not calories, joules, or a clinical measurement.

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Session-RPE × Duration

The output has arbitrary units because it combines a subjective scale with minutes.

Formula

load (AU) = session RPE × duration (min)

Scientific Background

Foster and colleagues described session RPE as a practical method for monitoring exercise training. This calculator implements only the multiplication and does not extrapolate the method into injury or readiness prediction.