Lifting heavy weights for just a few reps makes untrained young men much stronger than doing more reps with lighter weights, especially after 8 weeks of training.

Pro

Against

Evidence from Studies

Supporting (1)

Community contributions welcome

Muscular adaptations in response to three different resistance-training regimens: specificity of repetition maximum training zones

Randomized Controlled Trial

Human

2002 Nov

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

Muscular adaptations in response to three different resistance-training regimens: specificity of repetition maximum training zones

Score: 32

DOI: 10.1007/s00421-002-0681-6

Similar Assertions

Lifting lighter weights many times in a row helps untrained young men build more muscle endurance than lifting heavier weights fewer times. After 8 weeks, they can do more reps before getting tired.

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Lifting weights many times in a row (20-28 reps) helps young men who don't exercise get better at cardio, making them able to breathe easier and last longer during workouts compared to lifting fewer reps.

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Lifting weights with fewer reps (3-11) builds more muscle than doing lots of reps (20-28) in young guys new to training, especially after 8 weeks.

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Lifting heavy weights with fewer reps and longer breaks builds more muscle and strength than lifting lighter weights with more reps and shorter breaks in men who already work out.

82%

When you lift weights, doing a few heavy reps makes you stronger, doing lots of light reps helps your stamina, and doing a medium amount builds bigger muscles.

82%