Light vs Heavy Weight Training Study
Comparable Strength and Hypertrophic Adaptations to Low-Load and High-Load Resistance Exercise Training in Trained Individuals: Many Roads Lead to Rome
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Low-load training produced comparable strength gains in multi-joint movements (21% improvement) to high-load training.
Contradicts the common assumption that heavy weights are necessary for significant strength gains.
Practical Takeaways
Incorporate both low-load and high-load training in your routine to target different goals like endurance and single-joint strength.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Low-load training produced comparable strength gains in multi-joint movements (21% improvement) to high-load training.
Contradicts the common assumption that heavy weights are necessary for significant strength gains.
Practical Takeaways
Incorporate both low-load and high-load training in your routine to target different goals like endurance and single-joint strength.
Publication
Journal
bioRxiv
Year
2025
Authors
Kristoffer Toldnes Cumming, Ingrid Cecelia Elvatun, Richard Kalenius, Gordan Divljak, T. Raastad, N. Psilander, Oscar Horwath
Related Content
Claims (6)
When people who are already fit push themselves as hard as they can during weight training, it doesn't matter if they lift heavy weights for a few reps or lighter weights for many reps—both ways build muscle about the same.
Lifting lighter weights many times until you can't do any more builds as much muscle as lifting heavy weights a few times in people who already exercise regularly.
Lifting lighter weights many times until you can't do more builds muscle strength just as well as lifting heavy weights a few times until you can't do more, for people who already work out.
Lifting lighter weights many times until you can't do more improves muscle endurance better than lifting heavy weights just a few times, especially for people who already work out.
Whether you lift heavy weights for a few reps or lighter weights for more reps until you can't do any more, both ways make your thigh muscles grow about the same amount in people who already work out.