The Claim

Passive repetitive stretching does not alter the number of Pax7+ satellite cells in the gastrocnemius muscle of mice, indicating that muscle hypertrophy can occur independently of changes in satellite cell content.

Source: Efficacy of passive repetitive stretching of skeletal muscle on myofiber hypertrophy and genetic suppression on MAFbx, MuRF1, and myostatin

What the research says

Roughly balanced

Support and challenge are close. The picture may shift as more studies come in.

Supports
7score
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

Stretching mice's leg muscles didn't change the number of muscle repair cells, suggesting their muscles still grew without using more of these cells.

See the scientific wording

Passive repetitive stretching did not affect the number of Pax7+ satellite cells in mouse gastrocnemius muscle, suggesting that muscle hypertrophy occurred without changes in satellite cell content.

What the research says

1 study

  1. Study: Efficacy of passive repetitive stretching of skeletal muscle on myofiber hypertrophy and genetic suppression on MAFbx, MuRF1, and myostatin

    The study stretched mice muscles and found they got bigger without increasing the number of muscle repair cells, which supports the idea that muscles can grow even if those cells don’t change.

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

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

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