Whether you rest 1 minute or 2.5 minutes between sets, your strength gains in squat and bench press end up being about the same after 10 weeks of training.
Scientific Claim
Resistance training with either 1-minute or 2.5-minute rest intervals produces similar increases in squat and bench press strength after 10 weeks in healthy, recently untrained males.
Original Statement
“There were no differences in strength increases.”
Evidence Quality Assessment
Claim Status
overstated
Study Design Support
Design cannot support claim
Appropriate Language Strength
association
Can only show association/correlation
Assessment Explanation
Based on abstract only - full methodology not available to verify. The phrase 'no differences' is reported, but without details on statistical power or measurement reliability, this cannot be confirmed as definitive. 'Associated with no difference' is more accurate.
More Accurate Statement
“Resistance training with either 1-minute or 2.5-minute rest intervals is associated with similar increases in squat and bench press strength after 10 weeks in healthy, recently untrained males.”
Gold Standard Evidence Needed
According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.
Systematic Review & Meta-AnalysisLevel 1aWhether rest interval duration has no meaningful effect on maximal strength gains across resistance training populations.
Whether rest interval duration has no meaningful effect on maximal strength gains across resistance training populations.
What This Would Prove
Whether rest interval duration has no meaningful effect on maximal strength gains across resistance training populations.
Ideal Study Design
A meta-analysis of 25+ RCTs comparing rest intervals <2 min vs >2 min in untrained and trained individuals, measuring 1RM squat and bench press changes over ≥8 weeks, with standardized protocols and outcome reporting.
Limitation: Cannot rule out small but meaningful effects in subgroups (e.g., women, older adults).
Randomized Controlled TrialLevel 1bIn EvidenceWhether 1-minute and 2.5-minute rest intervals produce equivalent strength gains in untrained males.
Whether 1-minute and 2.5-minute rest intervals produce equivalent strength gains in untrained males.
What This Would Prove
Whether 1-minute and 2.5-minute rest intervals produce equivalent strength gains in untrained males.
Ideal Study Design
A double-blind, randomized controlled trial of 100 untrained males aged 20–30, assigned to 1-minute or 2.5-minute rest intervals during 10 weeks of full-body resistance training, with 1RM squat and bench press tested at baseline, week 5, and week 10 using standardized protocols.
Limitation: Cannot prove equivalence — only lack of statistically significant difference.
Cross-Sectional StudyLevel 3Whether individuals who habitually use short vs long rest intervals show different strength levels.
Whether individuals who habitually use short vs long rest intervals show different strength levels.
What This Would Prove
Whether individuals who habitually use short vs long rest intervals show different strength levels.
Ideal Study Design
A cross-sectional survey of 500 resistance-trained males measuring their typical rest intervals and current 1RM squat/bench press, controlling for training experience, volume, and age.
Limitation: Cannot determine causality or direction of effect.
Evidence from Studies
Supporting (1)
The Effect of Resistive Exercise Rest Interval on Hormonal Response, Strength, and Hypertrophy With Training
The study found that whether guys rested for 1 minute or 2.5 minutes between weightlifting sets, they both got just as strong in squats and bench presses after 10 weeks — so the rest time didn’t matter for strength gains.