The effect of melatonin treatment on postural stability, muscle strength, and quality of life and sleep in postmenopausal women: a randomized controlled trial.

Nutr J · 2015 · PMC4590707 · PMID 26424587

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borderline significantno p-value reported

In the subgroup of people with insomnia there was, however, a borderline significant improvement in quality of sleep in the melatonin group compared to placebo.

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