The Claim
In previously trained adults over a 5-week period, total training volume does not significantly differ between resistance training performed near failure (0–1 RIR) and training performed further from failure (4–6 RIR), despite differences in perceived effort and repetition count per set.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In adults with prior resistance training experience, the total amount of weight lifted over five weeks is similar whether exercises are done close to muscle failure or with several reps left in reserve, even though the effort felt during sets and the number of repetitions per set differ.
See the scientific wording
Total training volume does not significantly differ between resistance training performed near failure (0–1 RIR) and training performed further from failure (4–6 RIR) in previously trained adults over a 5-week period, despite differences in perceived effort and repetition count per set.
When lifting close to failure, each rep feels harder and fewer reps can be done per set, but the muscles fire more intensely and more efficiently, so the total amount of work done over time ends up being about the same as when lifting with more reps but less effort per rep.
What the research says
1 studyWhen experienced lifters train until they’re almost out of steam versus stopping a few reps short, they end up doing about the same total amount of lifting over time — even though the near-failure sets feel much harder. The study proved this by measuring total weight lifted.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.