Whether you do CrossFit or lift weights regularly, your thigh muscles end up about the same size after years of training.

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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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Muscle power and muscle hypertrophy of the lower limbs among practitioners of functional fitness training and strength training

Cross-Sectional Study

Human

Both types of training—functional fitness and traditional strength training—made the thigh muscles of experienced guys grow just as much, so it doesn’t matter which one you pick if your goal is bigger muscles.

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

Muscle power and muscle hypertrophy of the lower limbs among practitioners of functional fitness training and strength training

Score: 54

DOI: 10.1007/s11332-023-01108-1

Similar Assertions

People who do CrossFit and people who lift weights end up with about the same size leg muscles after years of training — the type of workout doesn’t seem to change muscle growth much.

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