The Claim
Passive stretch acutely activates anabolic intracellular signaling pathways, including mTORC1 and MAPK, which regulate muscle protein synthesis and hypertrophy, as consistently demonstrated in rodent and in vitro muscle cell models. These mechanosensitive pathways convert mechanical tension into chemical signals that promote muscle growth, providing a biological foundation for stretch-based hypertrophy interventions.
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.
What the research says
1 studyStudy: Inter-set stretch: A potential time-efficient strategy for enhancing skeletal muscle adaptations
The study confirms that passively stretching muscles sends chemical signals to the cells that tell them to grow stronger and bigger. This provides scientific proof that stretching can actually help build muscle.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
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