The Claim

In adult female mice, frequent rapamycin administration (2 mg/kg, three times weekly) suppresses skeletal muscle mTORC1 signaling, as indicated by reduced rpS6 phosphorylation in the tibialis anterior and flexor digitorum longus muscles, following 8 weeks of progressive weighted wheel running, while intermittent dosing (once weekly) results in partial recovery of mTORC1 activity between doses, indicating that dosing frequency differentially affects the pharmacodynamic response of rapamycin on mTORC1 signaling in skeletal muscle.

Source: Rapamycin Does Not Compromise Exercise‐Induced Muscular Adaptations in Female Mice

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
11score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

How it works
1 study reviewed
In plain English

In female mice that exercised with weighted wheels for 8 weeks, giving rapamycin three times a week blocked a key muscle signaling pathway, but giving it just once a week let the pathway bounce back a bit between doses — showing that how often you give the drug really changes how it works in muscles.

See the scientific wording

In adult female mice, frequent rapamycin dosing (2 mg/kg, three times weekly) suppresses skeletal muscle mTORC1 signaling (measured by rpS6 phosphorylation) in tibialis anterior and flexor digitorum longus after 8 weeks of progressive weighted wheel running, whereas intermittent dosing (once weekly) allows partial recovery of mTORC1 activity between doses, demonstrating differential pharmacodynamic effects based on dosing frequency.

What the research says

1 study

  1. Study: Rapamycin Does Not Compromise Exercise‐Induced Muscular Adaptations in Female Mice

    The study looked at how different rapamycin dosing schedules affect muscle response to exercise in female mice, and found that daily dosing keeps mTOR activity lower, while weekly dosing lets it bounce back, which supports the claim.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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