The Claim
In trained men, resistance training performed with 4–6 or 1–3 repetitions in reserve (RIR) results in similar increases in bench press and squat strength over eight weeks, while training to momentary failure (0–3 or 0 RIR) results in smaller strength gains.
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 trained men, lifting weights with some reps left in reserve leads to the same strength gains in bench press and squat as lifting to complete failure, but lifting to complete failure results in smaller strength gains over eight weeks.
See the scientific wording
In trained men, resistance training performed with 4–6 or 1–3 repetitions in reserve (RIR) leads to similar increases in bench press and squat strength over eight weeks, while training to momentary failure (0–3 or 0 RIR) is associated with smaller strength gains, suggesting that avoiding complete muscular failure may optimize strength development in this population.
When training stops short of complete muscle failure, the nervous system stays more responsive, allowing muscles to contract more forcefully during each set. When training goes to complete failure, the nerves controlling the muscles become less able to send strong signals, which reduces the number of muscle fibers that can be activated, leading to weaker strength gains over time.
What the research says
1 studyIn trained men, stopping a few reps short of failure builds just as much strength as going all the way to exhaustion — but going all the way to failure often leads to worse results and more missed workouts.
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.