When men twist their arms outward, they get weaker when trying to pull them across their body — even if they're trying just as hard.

41

Pro

0

Against

Evidence from Studies

Supporting (1)

41

Community contributions welcome

41

Force direction and arm position affect contribution of clavicular and sternal parts of pectoralis major muscle during muscle strength testing

Cross-Sectional Study

Human

2019 Jan-Mar

The study shows that when men rotate their arms outward more, they can’t push as hard during a chest-strength test, which matches what the claim says.

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

Force direction and arm position affect contribution of clavicular and sternal parts of pectoralis major muscle during muscle strength testing

Score: 41

DOI: 10.1016/j.jht.2017.08.007

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