When rats do the same hard workout again two days later, their muscles don't get the same boost in growth signals as the first time, showing that the body quickly gets used to repeated exercise.

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7

Against

Evidence from Studies

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Contradicting (1)

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7

Myofibrillar protein synthesis rates are increased in chronically exercised skeletal muscle despite decreased anabolic signaling

Cohort Study

Animal

2022 May 9

The study shows that the second workout made the muscle growth signals much weaker than the first workout, which is even more dramatic than just 'no increase' as claimed.

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Source Study

Myofibrillar protein synthesis rates are increased in chronically exercised skeletal muscle despite decreased anabolic signaling

Score: 7

DOI: 10.1038/s41598-022-11621-x

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