Use RPE as a communication language with coaches and training partners
A shared RPE vocabulary turns subjective experience into objective programming data that a coach can act on.
Why it works
Without a standardized effort language, a coach cannot distinguish between "that was hard because of fatigue" and "that was hard because the load was high." RPE gives both parties a calibrated number that collapses that ambiguity. The exchange — "I programmed an RPE 7, you hit RPE 9 at that load, so we need to revisit the prescription" — is only possible if both parties use the scale consistently.
How to do it
- Establish which RPE scale you and your coach are using (Borg 6–20, CR10, or RIR-based).
- Report RPE for every working set or cardio block in your training log.
- Discuss discrepancies openly: if you consistently rate lower than prescribed, re-anchor the scale together.
- Use RPE in check-ins with training partners to normalize talking about effort without ego.
Evidence
The utility of RPE as a coaching communication tool is practitioner-established and built on the validated psychophysics of the scale. The interpersonal calibration aspect is clinical practice rather than specifically trialed. (anecdotal)
RPE communication requires both parties to have calibrated their scales, which takes intentional practice; misaligned anchoring produces miscommunication rather than clarity.
Common mistake
Giving RPE reports strategically — saying 8/10 when you mean 6/10 to signal effort to a coach — which corrupts the data and eventually breaks the coaching relationship.
Practice this with IX Coach
7 days free, then $40/month (~$1.30/day).
More practices for The RPE Scale
- Calibrate the Borg scale to your actual physiology
The 6–20 Borg scale (or 0–10 RPE) only works if you know what each number feels like in your own body.
- Autoregulate daily training load using RPE
If a planned moderate session feels like an 8/10 instead of the usual 6/10, your body is telling you something — adjust the session accordingly.
- Use RPE to set strength training load instead of fixed percentages
An RPE 8 on a squat means two reps left in the tank — this calibrates load to your actual state on that day.
- Use post-session RPE review to detect overreaching early
Track the RPE drift across a training block — rising RPE at the same load is the earliest signal of overreaching.
- Use RPE to set cardio intensity without heart rate monitors
Target RPE 5–6 for aerobic base, 7–8 for tempo, 9–10 for intervals — all without needing a heart rate monitor.
Related concepts
- Zone 2 Training
Mitochondria, metabolic flexibility, and the aerobic base that underlies everything else
- Supercompensation
How stress, recovery, and adaptation interact — and how to time them to peak on demand
- Progressive Overload
The fundamental principle of physical adaptation — and how to apply it without breaking down
- Deload Week
How planned recovery phases convert training stress into realized gains