When young women do strength exercises until they can't do any more, their arm and leg muscles get stronger by about 15-27% after 6 weeks. It doesn't matter if they lift heavy or light weights—both ways work just as well for building strength.

40

Pro

0

Against

Evidence from Studies

Supporting (1)

40

Community contributions welcome

40

Comparing the effects of low and high load resistance exercise to failure on adaptive responses to resistance exercise in young women

Randomized Controlled Trial

Human

2019 Jun

The study showed that both light and heavy weightlifting to failure made women's arms and legs stronger by similar amounts, just like the claim said.

Contradicting (0)

0

Community contributions welcome

No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Comparing the effects of low and high load resistance exercise to failure on adaptive responses to resistance exercise in young women

Score: 40

DOI: 10.1080/02640414.2018.1559536

Similar Assertions

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When young women lift weights until they can't anymore, using lighter weights or heavier weights leads to about the same muscle growth in their arms and legs after 6 weeks.

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