Can lifting light weights build muscle like heavy weights?
Muscular adaptations in low- versus high-load resistance training: A meta-analysis
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Low-load training (≤50% 1 RM) produced substantial muscle growth and strength gains—even though it’s far below traditional 'hypertrophy range'.
Most fitness advice says you need 65-85% 1 RM for muscle growth; this shows even 30-50% can work, especially for beginners.
Practical Takeaways
If you're a beginner or recovering from injury, you can build muscle and strength using lighter weights (50-60% 1 RM) with higher reps.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Low-load training (≤50% 1 RM) produced substantial muscle growth and strength gains—even though it’s far below traditional 'hypertrophy range'.
Most fitness advice says you need 65-85% 1 RM for muscle growth; this shows even 30-50% can work, especially for beginners.
Practical Takeaways
If you're a beginner or recovering from injury, you can build muscle and strength using lighter weights (50-60% 1 RM) with higher reps.
Publication
Journal
European Journal of Sport Science
Year
2016
Authors
B. Schoenfeld, Jacob M. Wilson, Ryan P. Lowery, J. Krieger
Related Content
Claims (4)
If you lift light weights for more reps or heavy weights for fewer reps—but do the same total amount of work—you’ll grow your muscles just as much either way.
Lifting light weights—less than half of what you can lift once—can still help beginners get stronger and build muscle, but not as much as lifting heavier weights.
Lifting heavier weights might help you get stronger a bit more than lifting lighter weights, but the difference is so small that we can’t be sure it’s real — it could just be luck.
Lifting heavy weights might help you build slightly more muscle than lifting light weights if you're new to training, but the difference isn't big enough to say for sure it's real.