The Claim
The increase in whole-muscle specific tension during high-resistance strength training is associated with both neurological factors and morphological changes, including preferential hypertrophy of type II fibers, increased pennation angle, and increased radiological density.
What the research says
Roughly balanced
Support and challenge are close. The picture may shift as more studies come in.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
When people do heavy weight training and their muscles get stronger, it’s not just because their muscles get bigger — their nerves also get better at telling muscles to work hard, and their muscle fibers change shape in ways that help them produce more force.
See the scientific wording
The increase in whole-muscle specific tension during high-resistance strength training is associated with both neurological factors and morphological changes such as preferential hypertrophy of type II fibers, increased pennation angle, and radiological density.
What the research says
1 studyStudy: Morphological and Neurological Contributions to Increased Strength
This study says that when people lift heavy weights, their muscles get stronger because their nerves get better at telling muscles to contract AND because their muscle fibers grow bigger (especially the fast-twitch ones), angle differently, and become denser—all of which matches what the claim says.
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.