What is Muscular Failure: The Weight Room Part 4 @lylemcdonaldisright

Uploaded November 2020 | Updated September 2026, 1 hour ago

Ok, almost done. In the final background part of this stupid series, I want to redefine true muscular failure, address why it's important (again) and look at three different methods that have been used or are in current use to gauge intensity: Rating of Perceived Exertion (RPE), Repetitions in Reserve (RIR) and Rating of Perceived Exertion (RPE).

I'll look at each in terms of what they represent before looking at the flaw inherent to all of them: they are all useless if someone has never performed a truly maximal (10 RPE) or failure (0 RIR/RTF) set. Which I can assure you, after 25 years of watching people, move have not.

Full article:
bodyrecomposition.com/training/what-is-muscular-failure-the-weight-room-part-4

Site:
bodyrecomposition.com
store.bodyrecomposition.com

Methods for Regulating and Monitoring Resistance Training by Helms et al.
http://www.johk.pl/files/10078-74-2020-v74-2020-03.pdf

Application of the Repetitions in Reserve-Based Rating of Perceived Exertion Scale for Resistance Training
ncbi.nlm.nih.gov/pmc/articles/PMC4961270

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