People who do more resistance training sets per week tend to build more muscle and get stronger, but after a certain point, doing even more sets provides little extra benefit.
Mechanism
Synthesis from 1 study
Lifting more sets makes your muscles pull harder, which turns on a molecular signal that tells them to build more protein and grow bigger and stronger — but after a certain number of sets, that signal doesn’t get any stronger, so extra sets don’t help much more (10.1007/s40279-025-02344-w).
Most probable mechanism
When you lift weights with more sets, your muscle fibers stretch and pull harder, which turns on a molecular switch called mTOR that tells the muscle to build more protein, making it bigger and stronger — but after a certain number of sets, this switch doesn’t get any more activated, so extra sets don’t help much more (10.1007/s40279-025-02344-w)
Increased mechanical tension during resistance training activates mechanosensitive pathways in muscle fibers, including integrin and focal adhesion kinase signaling, which initiate downstream anabolic signaling (10.1007/s40279-025-02344-w)
Mechanosensitive signaling converges on the mTORC1 pathway, increasing phosphorylation of ribosomal protein S6 kinase and eukaryotic initiation factor 4E-binding protein, which enhances translation initiation and muscle protein synthesis (10.1007/s40279-025-02344-w)
Repeated bouts of elevated protein synthesis over the week lead to net muscle protein accretion, resulting in hypertrophy and strength gains, but the magnitude of mTOR activation and protein synthesis response plateaus at higher weekly volumes, limiting further gains (10.1007/s40279-025-02344-w)
Evidence from Studies
Supporting (1)
Community contributions welcome
The Resistance Training Dose Response: Meta-Regressions Exploring the Effects of Weekly Volume and Frequency on Muscle Hypertrophy and Strength Gains.
Contradicting (0)
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