The Claim

In trained individuals, estimated one-repetition maximum strength gains from resistance training over a 12-week period are small and do not differ significantly between protocols employing lengthened-partial range of motion and those employing full range of motion.

Source: The effects of lengthened-partial range of motion resistance training of the limbs on arm and thigh muscle cross-sectional area

What the research says

Supports is higher

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

Supports
71score
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.

Description
1 study reviewed
In plain English

If you're already fit and lift weights, whether you do partial reps with the muscle stretched or full reps, you'll gain about the same tiny amount of strength after 12 weeks.

See the scientific wording

Estimated one-repetition maximum strength gains from resistance training in trained individuals are small and do not differ significantly between lengthened-partial and full-range-of-motion protocols over 12 weeks.

What the research says

1 study

  1. Study: The effects of lengthened-partial range of motion resistance training of the limbs on arm and thigh muscle cross-sectional area

    The study compared two ways of lifting weights — one using a partial range and one using the full range — in people who already train regularly. After 12 weeks, both groups got about equally stronger, meaning neither method gave a clear advantage.

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

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.