Yuka Tsukahara1,2, Suguru Torii3, Fumihiro Yamasawa4, Jun Iwamoto5, Takanobu Otsuka6, Hideyuki Goto7, Torao Kusakabe8, Hideo Matsumoto9, Takao Akama3. 1. Waseda Institute for Sport Sciences, Waseda University, 2-579-15 Mikajima, Tokorozawa, Saitama, 359-1192, Japan. yuka.voila@gmail.com. 2. Institute for Integrated Sports Medicine, Keio University, 35 Shinanomachi, Shinjyuku-ku, Tokyo, 160-0016, Japan. yuka.voila@gmail.com. 3. Faculty of Sport Sciences, Waseda University, 2-579-15 Mikajima, Tokorozawa, Saitama, 359-1192, Japan. 4. Marubeni Health Promotion Center, 7-1, Nihonbashi 2-chome, Chuo-ku, Tokyo, 103-6060, Japan. 5. Bone and Joint Disease Center, Keiyu Orthopaedic Hospital, 2267 Akoudacho, Tatebayashi, Gunma, 374-0013, Japan. 6. School of Education, Tokai Gakuen University, 901 Nakahira Tempakuku, Nagoya, 468-8514, Japan. 7. Department of Health and Fitness, Faculty of Wellness, Shigakkan University, 55 Nakoyama Yokonemachi, Obu, 474-8651, Japan. 8. Department of Orthopedic Surgery, Japanese Red-Cross Kyoto Daini Hospital, 355-5 Haruobi-cho, Kamigyo-ku, Kyoto, 602-8026, Japan. 9. Public Interest Incorporated Foundation, Sports Medicine Foundation, 8-1-9 Nishishinjyuku, Shinjyukuku, Tokyo, 160-0023, Japan.
Abstract
INTRODUCTION: Since the definition of secondary amenorrhea is cessation of regular menses for more than 3 months, it is likely that athletes with irregular menstrual cycles, including oligomenorrhea, do not consider the condition as serious. However, the consequences of untreated oligomenorrhea have not been investigated in elite track and field athletes. MATERIALS AND METHODS: The cohort consisted of 91 elite-level track and field athletes. Body compositions, including bone parameters and bone turnover markers (BTMs), were measured. RESULTS: Among the 91 participants, 52 were eumenorrheic and 33 were oligomenorrheic. The eumenorrheic athletes had significantly higher bone mineral density (BMD) and bone mineral content (BMC) of the lumbar spine, lower extremities, and whole body than had the oligomenorrheic athletes (p < 0.01). There were no significant differences in BTMs between the two groups, but oligomenorrheic athletes had significantly lower percent body fat. CONCLUSION: More than 40% of the elite-level female track and field athletes in this study reported menstrual disorders with oligomenorrhea as the most common. However, none sought medical attention. As compared to the eumenorrheic athletes, the oligomenorrheic athletes had lower BMC and BMD. Hence, if an athlete is oligomenorrheic, bone parameter measurements are considerably important.
INTRODUCTION: Since the definition of secondary amenorrhea is cessation of regular menses for more than 3 months, it is likely that athletes with irregular menstrual cycles, including oligomenorrhea, do not consider the condition as serious. However, the consequences of untreated oligomenorrhea have not been investigated in elite track and field athletes. MATERIALS AND METHODS: The cohort consisted of 91 elite-level track and field athletes. Body compositions, including bone parameters and bone turnover markers (BTMs), were measured. RESULTS: Among the 91 participants, 52 were eumenorrheic and 33 were oligomenorrheic. The eumenorrheic athletes had significantly higher bone mineral density (BMD) and bone mineral content (BMC) of the lumbar spine, lower extremities, and whole body than had the oligomenorrheic athletes (p < 0.01). There were no significant differences in BTMs between the two groups, but oligomenorrheic athletes had significantly lower percent body fat. CONCLUSION: More than 40% of the elite-level female track and field athletes in this study reported menstrual disorders with oligomenorrhea as the most common. However, none sought medical attention. As compared to the eumenorrheic athletes, the oligomenorrheic athletes had lower BMC and BMD. Hence, if an athlete is oligomenorrheic, bone parameter measurements are considerably important.
Entities:
Keywords:
Bone mineral content; Bone mineral density; Oligomenorrhea; Track and field
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