Study Highlights Impact of Ovulation on Female Athletes’ Performance
According to recent research, female athletes demonstrate faster reaction times—by about 80 milliseconds—and make fewer mistakes on the day of ovulation. This study, conducted by researchers at University College London (UCL), explored how different phases of the menstrual cycle and activity levels influence women’s cognitive functions.
The study involved 54 women aged 18 to 40 who were not using hormonal contraceptives. Participants were categorized based on their exercise habits: inactive, recreationally active, those competing at club level, and elite athletes engaged at national or international levels.
Test subjects performed cognitive assessments while also reporting mood and symptoms during various cycle stages: on the first day of menstruation, two days after menstruation ended, the first day of ovulation, and during the mid-luteal phase. Findings published in Sports Medicine – Open revealed that women generally performed optimally on cognitive tests during ovulation, reacting roughly 30 milliseconds faster than later in the cycle and making fewer errors. However, elite athletes showed even greater improvements; their attention and inhibition scores were over 120 milliseconds quicker, and their basic reaction time was 80 milliseconds faster during ovulation compared to their luteal phase performance.
Dr. Flaminia Ronca, the study’s lead author from UCL Surgery and Interventional Science and the Institute of Sport, Exercise and Health, noted that in high-stakes sports, a mere 80-millisecond delay can have significant implications, such as a heightened risk for injuries like concussions, particularly in fast-paced games like rugby.
In contrast, inactive participants consistently lagged in reaction times—averaging about 70 milliseconds slower—and committed approximately three times as many impulsive errors compared to their active peers, regardless of the phase of their cycle. This disparity could be crucial when it comes to activities like regaining balance after a stumble.
Ronca emphasized the importance of integrating some level of recreational physical activity into daily life. She pointed out that it doesn’t necessarily have to be intense or competitive to yield benefits—something we can all influence.
Responding to the research, Stephanie Hilborne, CEO of Women in Sport, commented on the findings. She expressed interest in the cognitive enhancements occurring on the day of ovulation but highlighted even more the broader cognitive benefits of maintaining an active lifestyle.
Hilborne noted that the ability to react to risks can determine whether someone recovers from a fall or ends up injured. This is particularly crucial for older women, given the concerning health inequality regarding conditions like osteoporosis, which affects about one in two women over age 50 compared to one in nine men.
She added that while it’s known that physical activity boosts bone strength, the newfound link between activity and improved response times adds urgency to initiatives aimed at getting more women involved in physical exercise, addressing the significant issue of fragility fractures.
