Changes in the prevalence of menstrual-related symptoms and menstrual cycle abnormalities among Japanese Summer and Winter Olympic athletes over the past seven Olympic Games.

While the overall prevalence of PMS did not show a significant trend, we observed a significant decrease specifically in the reporting of breast fullness ( p = 0.0005).

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Gynecological consultation rate Another key finding was the dramatic and highly significant increase in the gynecological consultation rate among all participating athletes, rising from 12.4% in 2008 to 65.3% in 2020 (OR per cycle: 1.42, p < 0.001).

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Results : Among the 786 athletes, the prevalence of menstrual irregularity significantly increased over the 12 years (OR per cycle: 1.24, 95% CI: 1.13–1.37; p < 0.001), while an increasing trend was suggested for secondary amenorrhea (p = 0.063).

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