The Claim
In resistance-trained adults, performing single-set resistance training twice weekly for 8 weeks results in similar improvements in maximal strength and local muscular endurance whether training is performed to muscular failure or with two repetitions in reserve.
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.
For adults who regularly lift weights, doing one set of exercises twice a week for eight weeks builds the same amount of strength and muscle endurance whether they push to complete fatigue or stop two reps before failure.
See the scientific wording
In resistance-trained adults, single-set resistance training performed twice weekly for 8 weeks leads to similar improvements in maximal strength and local muscular endurance regardless of whether training is performed to failure or with two repetitions in reserve.
When a trained person lifts weights, their nervous system learns to activate more muscle fibers with each effort. Whether they push until they can't move again or stop just before that point, their body still recruits the same number of muscle fibers because the effort level is high enough to trigger full activation. Over time, this repeated activation makes the nervous system better at turning on those fibers quickly and efficiently, which makes the person stronger and able to keep going longer without getting tired.
What the research says
1 studyFor people who already lift weights, doing one set of each exercise either until they can't do another rep or stopping two reps before failure leads to the same improvements in how strong they get and how long they can keep going without getting tired.
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.