The Claim
Resistance exercises performed with lower repetition ranges (≤12 reps) result in higher prediction accuracy of self-assessed performance compared to higher repetition ranges (>12 reps), with a mean difference of 0.41 repetitions in underprediction error.
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.
When people lift weights using fewer repetitions (12 or fewer), they more accurately estimate how many reps they can do compared to when they use more repetitions (over 12).
See the scientific wording
Prediction accuracy is higher when resistance exercises are performed with lower repetition ranges (≤12 reps) compared to higher repetition ranges (>12 reps), with a mean difference of 0.41 repetitions in underprediction error, suggesting load intensity influences self-assessment precision.
When lifting heavy weights for few reps, muscles send stronger signals about how tired they are, and the brain uses these signals to judge exactly how many more reps are possible, leading to more accurate predictions.
What the research says
1 studyPeople are better at guessing how many more reps they can do when lifting heavier weights for fewer reps, compared to lifting lighter weights for more reps. The study found that when people lift heavier, they’re more accurate in their guesses.
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.