If young men who have never weight trained before do bicep curls twice a week for 10 weeks, their arm strength increases by about 12% on average.

47

Pro

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Against

Evidence from Studies

Supporting (1)

47

Community contributions welcome

47

Single vs. Multi-Joint Resistance Exercises: Effects on Muscle Strength and Hypertrophy

Randomized Controlled Trial

Human

2015 Jun

The study tested exactly what the claim says - untrained young men doing bicep curls twice a week for 10 weeks - and found they gained about 11.9% strength in their elbow flexors, which is exactly what the claim claims.

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

Single vs. Multi-Joint Resistance Exercises: Effects on Muscle Strength and Hypertrophy

Score: 47

DOI: 10.5812/asjsm.24057

Similar Assertions

Doing bicep curls leads to bigger arm muscles (11% growth) than doing dumbbell rows (5% growth) after training for 8 weeks, at least in men who haven't exercised before.

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When men who hadn't trained before did bicep curls (a single-joint exercise) for 8 weeks, their arm muscles grew about 11%. But when they did dumbbell rows (a multi-joint exercise) instead, their muscles only grew about 5%.

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If young men who haven't trained before do lat pull-down exercises two times per week for about 2 and a half months, their arm muscles get about 10% stronger.

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When untrained men do arm curls for 8 weeks, their biceps get thicker (about 11%). But when they do dumbbell rows instead, their biceps only grow about half as much (about 5%).

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If young men who haven't exercised before do either multi-joint exercises (like pull-ups) or single-joint exercises (like bicep curls) for 10 weeks, their arm strength increases by about the same amount - neither type of exercise is clearly better than the other.

47

0

84%