About 2/3 of the athletes I coach use power meters to train, and the majority of them use heart rate monitors as well. But even with athletes that use all of this fancy equipment, sometimes a “Rate of Perceived Exertion” (RPE) scale is the best way to explain the subjective intensity of the workout. This a basically how hard you are going on your own personal 1-10 scale. While the scale is 100% subjective, it winds up being quite reliable, and has been validated in multiple scientific studies. ( you can do a Google Scholar search for GAV Borg or Gunnar Borg)
The scale is typically given like this:
- 0 – Nothing at all
- 1 – Very light
- 2 – Fairly light
- 3 – Moderate
- 4 – Some what hard
- 5 – Hard
- 6
- 7 – Very hard
- 8
- 9
- 10 – Very, very hard
But I also sometimes explain it like this:
- 0 – Nothing at all
- 1-2 Super easy, like a slow walk
- 3-4 Moderate effort, you aren’t going easy anymore, but you can hold this for a long time
- 5-6 Hard holding this for an extended period is difficult, at or just below race pace
- 7 -8 Very hard race pace, as you can only hold this for a couple of minutes
- 9 Almost as hard as you could possibly go
- 10 – This is as hard as you’ve ever gone your entire life, like someone is chasing you with a cattle prod.
This is useful for large groups of people such as stationary cycling classes ( such as the classes I teach at the Navy and VA hospitals), or situations where athletes don’t have have access to, or don’t want to use devices such as power meters or heart rate monitors. It is also frequently use the RPE scale even with athletes that DO use these training devices. The fact is, that an athlete needs to know how to go off of feel, to gauge their own physiological responses, just get a handle on what they can do, and when they need to do it. Don’t get me wrong. I love training, coaching, and racing with power. But if you you don’t know and understand what your boy is doing at the moment, and what you are capable of on a purely primal level. You’ll never really reach your maximum potential.







