The Claim
In adult female mice, 8 weeks of progressive weighted wheel running induces hypertrophy of myofiber cross-sectional area in the soleus (predominantly Type IIA fibers) and flexor digitorum longus (containing Type I and IIA fibers) muscles, and this exercise-induced muscle growth is not prevented by intermittent or frequent administration of rapamycin (2 mg/kg, once or three times weekly), indicating that mTORC1 inhibition does not block the hypertrophic response to exercise in this animal model.
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.
Even when mice are given a drug that blocks a key muscle growth pathway, running with added weight still makes their leg muscles bigger — showing that exercise can build muscle even when that pathway is turned down.
See the scientific wording
In adult female mice, 8 weeks of progressive weighted wheel running increases myofiber cross-sectional area in both soleus (Type IIA) and flexor digitorum longus (Type I and IIA) muscles, and this hypertrophy occurs regardless of treatment with intermittent or frequent rapamycin (2 mg/kg, once or three times weekly), indicating that mTORC1 inhibition does not prevent exercise-induced muscle fiber growth in this model.
What the research says
1 studyStudy: Rapamycin Does Not Compromise Exercise‐Induced Muscular Adaptations in Female Mice
The study found that mice gained muscle from running, even when taking rapamycin weekly or three times a week, which supports the idea that this drug doesn’t stop muscle growth from exercise in female mice.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
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