When women work out during the part of their cycle when estrogen is high, they might build more muscle because estrogen helps protect muscles and speed up recovery.

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Evidence from Studies

Supporting (1)

1

Community contributions welcome

1

Links Between Testosterone, Oestrogen, and the Growth Hormone/Insulin-Like Growth Factor Axis and Resistance Exercise Muscle Adaptations

Narrative Review

2020

The study says estrogen is important for women's muscle response to strength training, but it doesn't prove that training at a specific time in the menstrual cycle gives better results.

Contradicting (0)

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No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Links Between Testosterone, Oestrogen, and the Growth Hormone/Insulin-Like Growth Factor Axis and Resistance Exercise Muscle Adaptations

Score: 1

DOI: 10.3389/fphys.2020.621226

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