The Claim
Changes in muscle size and muscle strength following resistance training are not strongly correlated, meaning that the magnitude of muscle size gain does not reliably predict the magnitude of muscle strength gain, and vice versa.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
After resistance training, increases in muscle size do not reliably predict increases in muscle strength, and increases in muscle strength do not reliably predict increases in muscle size.
See the scientific wording
Changes in muscle size and muscle strength following resistance training are not strongly correlated, indicating that gains in size do not reliably predict gains in strength, and vice versa.
When muscles are stretched and contracted under load, the physical force triggers the building of more contractile parts inside muscle fibers, making them bigger. At the same time, the nervous system learns to activate more muscle fibers at once and fire them faster, making the muscle stronger without changing its size. These two changes happen through separate processes, so a muscle can get bigger without getting much stronger, or stronger without getting bigger.
What the research says
1 studyThis study found that when people lift weights, their muscles might get bigger without getting stronger, and they might get stronger without their muscles growing much—these two changes often happen on their own, not together.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.