The Study
Factors influencing the accuracy of the repetition in reserve scale in resistance training: a systematic review
This is like reading a summary of many different reports about weight training. It shows that when people lift weights closer to their max effort, they seem to be better at guessing how many more reps they could do. But it can't prove that lifting this way actually causes better guessing - it just shows they often happen together.
Analysis score
Maximum 100 for a systematic review.
Where the score came from
This study looked at how accurately people can guess how many more reps they can do during weight training.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 520 / 100
Quality score
Systematic reviews and meta-analyses of cohort studies. They sit above a single cohort study but below a single randomized trial, because the underlying evidence is still observational.
Key takeaways
Summary
Based on the study abstract and findings.
- 1People are better at judging effort when pushing closer to their limits and using heavier weights.
- 2Guesses are more accurate when closer to failure, with heavier weights, and for upper body exercises.
- 3Accuracy gets worse with more reps and lighter weights.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Physical Therapy Reviews
Year
2025
Authors
Filipe Russo, Priscila Marconcin, Diana Gomes, M. Peralta, F. Flôres, Nuno Casanova
Related Content
Claims (4)
People aren't very good at guessing how close they are to muscle failure when doing many reps of weightlifting.
When people lift lighter weights compared to their max, it's harder for them to accurately guess how many more reps they could do, making it less reliable than when lifting heavier weights.
When people lift weights until they're almost too tired to continue, especially with arm exercises, they get better at guessing how many more reps they could do. It's like training your body to feel its limits more accurately.
When people do more reps in a row during weight training, they become worse at guessing how many more reps they could do. This means longer sets make it harder to judge your own effort accurately.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.