Journal Article MRI reveals menstrually-related muscle edema that negatively affects athletic agility in young women

Sawai, Akemi  ,  Tochigi, Yuriko  ,  Kavaliova, Nadzeya  ,  Zaboronok, Alexander  ,  Warashina, Yuki  ,  Mathis, Bryan J.  ,  Mesaki, Noboru  ,  Shiraki, Hitoshi  ,  Watanabe, Koichi

13 ( 1 )  , p.e0191022 , 2018-01 , Public Library of Science
ContextAbout 10% of Japanese female athletes are afflicted by menstrually-related edema, mainly in the lower limbs, and, with few studies on this problem, the effect on performance remains unclear.ObjectiveTo quantitatively evaluate fluid retention in the calf in female students over their menstrual cycle using magnetic resonance imaging (MRI) and to determine the relationship of MRI changes and athletic performance.DesignThe menstrual cycle was divided into 5 phases: menstrual, follicular, ovulatory, early luteal, and late luteal with sampling done in either morning (AM) or afternoon (PM) sessions. At each phase, MRI of the calf (7:00–8:00, 14:00–16:00), body composition and hormones (7:00–8:00), and athletic performance (14:00–16:00) were evaluated.

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