mechanistic
Analysis v1
Strong Support
When you do single-joint arm exercises like bicep curls, swinging the weight gives you the same muscle growth as using perfect form. But this doesn't work for leg exercises or movements that use multiple joints at once.
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Evidence from Studies
Supporting (1)
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Community contributions welcome
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Do Cheaters Prosper? Effect of Externally Supplied Momentum During Resistance Training on Measures of Upper Body Muscle Hypertrophy
Randomized Controlled Trial
Human
2025The study found that using momentum or strict form during bicep curls and tricep pushdowns (single-joint upper body exercises) produced the same muscle growth. This supports the claim that this equivalence applies to single-joint upper body exercises, while the claim also says we shouldn't assume this applies to other types of exercises.
Contradicting (0)
0
Community contributions welcome
No contradicting evidence found
Gold Standard Evidence Needed
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