In previously trained adults, 5 weeks of resistance training with 0–1 repetitions in reserve produces similar increases in squat, bench press, and deadlift one-repetition maximums as training with 4–6 repetitions in reserve, despite lower perceived effort in the latter group.

Source: The effects of resistance training to near failure on strength, hypertrophy, and motor unit adaptations in previously trained adults

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports

54score

Challenges

0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect

1 study reviewed

In plain English

Among adults who have previously trained, performing resistance exercises close to muscle failure for five weeks leads to the same strength gains in squat, bench press, and deadlift as training with more rest between sets, even though the latter feels easier.

See the scientific wording

In previously trained adults, 5 weeks of resistance training with 0–1 repetitions in reserve (near failure) produces similar increases in squat, bench press, and deadlift one-repetition maximums as training with 4–6 repetitions in reserve, despite lower perceived effort in the latter group, suggesting that training to near failure is not necessary for strength gains in this population.

Why this might work

When people lift weights without going all the way to failure, their muscles still learn to use the same small motor units more efficiently — firing them faster and at lower force levels. This lets the nervous system produce more strength without needing to recruit bigger, harder-to-activate motor units, so strength gains happen even without pushing to exhaustion.

Verified mechanismbased on 1 study

What the research says

1 study

Study: The effects of resistance training to near failure on strength, hypertrophy, and motor unit adaptations in previously trained adults
For people who already lift weights, training until they’re almost out of breath doesn’t make them stronger than stopping a few reps earlier—as long as they do the same total amount of work. Both groups got just as strong.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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