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. 2016 Oct 18;6(10):e013103.
doi: 10.1136/bmjopen-2016-013103.

Stress fracture and premenstrual syndrome in Japanese adolescent athletes: a cross-sectional study

Takashi Takeda  1 , Yoko Imoto  1 , Hiroyo Nagasawa  1 , Atsuko Takeshita  1 , Masami Shiina  1
Affiliations

Stress fracture and premenstrual syndrome in Japanese adolescent athletes: a cross-sectional study

Takashi Takeda et al. BMJ Open. .

Abstract

Objectives: To investigate the relationship between the occurrence of stress fracture and premenstrual syndrome (PMS)/premenstrual dysphoric disorder (PMDD) in Japanese adolescent athletes.

Design: Cross-sectional study.

Setting: Osaka, Japan.

Participants: A school-based survey on menstruation and school life was conducted using a sample of 1818 Japanese female students who belonged to two public high schools in Japan. Among them, we recruited 394 athletes who had regular menstrual cycles (25-38 days) and completed a questionnaire about their premenstrual symptoms and their competitive career.

Main outcome measure: Premenstrual symptoms and the occurrence of stress fracture.

Results: The prevalences of moderate-to-severe PMS and PMDD were 8.9% and 1.3%, respectively, which were the same as in collegiate athletes in a previous study. Premenstrual symptoms disturbed 'Work efficiency or productivity, home responsibilities', 'Relationships with coworkers or family' and 'Athletic performance in training or competition' more severely than menstrual pain (p=0.031, p=0.004 and p<0.001, respectively). 66 athletes (16.8%) reported having experienced a stress fracture. The severity of 'Overeating or food cravings', 'Physical symptoms' and 'Performance in training or competition' in athletes with previous stress fractures were much higher than in those without a history of stress fractures (p=0.015, p=0.008 and p=0.006, respectively). In terms of premenstrual symptoms, 'Physical symptoms' was associated with an increased risk of stress fractures in athletes (OR 1.66, 95% CI 1.06 to 2.62).

Conclusions: The results from this study indicated that premenstrual symptoms may affect athletic performance and has the risk of stress fractures in adolescent athletes.

Keywords: MENTAL HEALTH; SPORTS MEDICINE.

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Conflict of interest statement

Conflicts of Interest: None declared.

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