The Study
Muscular adaptations in response to three different resistance-training regimens: specificity of repetition maximum training zones
This study is like comparing different exercise plans for a small group of people. It can show us what changes happened with each plan, but it can't prove the exercise plans actually caused those changes because we don't know if the groups were set up fairly.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
Lifting heavy weights a few times makes you stronger, lifting lighter weights many times helps you last longer and breathe better, and middle weights build bigger muscles.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 532 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes, this shows how to train for specific fitness goals like strength or endurance.
- 2Low reps (3-5) best for strength; high reps (20-28) best for endurance and breathing; reps 3-11 best for muscle size; all rep ranges changed muscle types.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
European Journal of Applied Physiology
Year
2002
Authors
G. Campos, T. Luecke, Heather K Wendeln, K. Toma, F. Hagerman, T. Murray, K. Ragg, N. Ratamess, W. Kraemer, R. Staron
Related Content
Videos (2)
Claims (7)
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.
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.
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.
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.
When young men who don't exercise start lifting weights, any number of reps between 3 and 28 changes their fast-twitch muscle fibers in the same way, making them more efficient, and this happens after 8 weeks of training.
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.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.