The Claim
In trained individuals, resistance training performed with high loads (75% 1-RM) twice weekly for 10 weeks results in significant increases in leg press and leg extension 1-RM strength (22–34%), and these gains occur regardless of whether training is performed to muscular failure or stopped 1–2 repetitions short of failure.
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 people who already train regularly, doing heavy weightlifting twice a week for 10 weeks increases leg strength by 22–34%, whether they push to complete muscle fatigue or stop 1–2 reps before failure.
See the scientific wording
In trained individuals, resistance training performed with high loads (75% 1-RM) twice weekly for 10 weeks leads to significant increases in leg press and leg extension 1-RM strength (22–34%) regardless of whether training is performed to failure or stopped 1–2 repetitions short of failure, indicating that maximal strength gains are not dependent on reaching muscular failure.
Heavy lifting activates all available muscle fibers even before complete exhaustion, and the muscle fibers grow thicker and reorganize their internal structure to produce more force, making the leg stronger without needing to push until complete failure.
What the research says
1 studyIn people who already lift weights, doing heavy leg exercises twice a week for 10 weeks makes legs much stronger—whether they push until they can’t do another rep or stop just before. Both ways worked just as well.
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.