Hormonal
Moderate-intensity aerobic or resistance exercise improves insulin resistance and ovulation rates in women with PCOS, independent of significant weight loss.
For women with PCOS, engaging in moderate-intensity exercise (like brisk walking or cycling) 3-5 times a week for 30-45 minutes can significantly improve insulin sensitivity and restore regular ovulation. This benefit occurs regardless of whether you lose weight, so consistency is more important than intensity or weight loss goals.
The most consistent improvements included improved ovulation, reduced IR (9–30%) and weight loss (4.5–10%). Improvements were not dependant on the type of exercise, frequency or length of exercise sessions.
Why this rating
Based on a systematic review of 8 studies (5 RCTs, 3 cohort), but with considerable heterogeneity in design and lack of meta-analysis.
Source
Exercise therapy in polycystic ovary syndrome: a systematic review
Cheryce L. Harrison et al. · Human Reproduction Update · 2010
DOI 10.1093/humupd/dmq045
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