When untrained young men lift lighter weights until they're tired for 10 weeks, it changes how their fast-twitch muscle cells organize themselves to better support muscle growth.

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Pro

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Against

Evidence from Studies

Supporting (1)

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Community contributions welcome

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Resistance Exercise-induced Changes in Muscle Metabolism are Load-dependent.

Randomized Controlled Trial

Human

2019 Dec

The study did exactly what the claim described—low-weight training to fatigue—and found it reduced the myonuclear area in fast-twitch muscles, just as claimed.

Contradicting (0)

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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

Resistance Exercise-induced Changes in Muscle Metabolism are Load-dependent.

Score: 46

DOI: 10.1249/mss.0000000000002088

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