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- Title
Low Body Fat Percentage and Menstrual Cycle Disorders in Female Elite Adolescent Dancers.
- Authors
Zijian Liu; Yining Gong; Hideaki Nagamoto; Takumi Okunuki; Ryusei Yamaguchi; Yusuke Kobayashi; Yanshu Li; Toshihiro Maemichi; Tsukasa Kumai
- Abstract
Introduction: The menstrual cycle is an important indicator of health in female athletes. Female elite adolescent dancers are expected to control their weight while also training intensely, which can lead to menstrual disorders. This study aimed to investigate the relationship between body composition and menstrual status in female elite adolescent dancers. Methods: In total, 131 female elite adolescent dancers (age: 15.9 ± 1.5 years) were enrolled in this study. We measured the height, weight, and body fat percentage (BFP) for each participant and calculated their body mass index (BMI). We gathered information on individual menstruation patterns and the participants' menstrual cycles over the previous year using recall methods. We then compared the differences between dancers with menstrual cycle disorders and those without. Primary amenorrhea was defined as menarche occurring after the age of 15, while secondary amenorrhe was defined as experiencing fewer than 5 or no menstrual periods for at least 3 of the previous 12 months. We conducted a reliability test using the same questionnaire 2 weeks later. Statistical significance was defined as P < .05, and we calculated the effect sizes (d) and 95% confidence intervals (95% CI). Results: The average BMI and BFP were 22.6 ± 3.0% and 19.4 ± 2.2 kg/m², respectively. Low BFP and low BMI were observed in 51 (38.6%) and 47 (35.6%) participants, respectively. Primary amenorrhea in 3 participants (2.3%) and 29 (22.1%) reported experiencing secondary amenorrhea; they had lower BFP than the dancers who did not experience amenorrhea (P = .041, 95% CI, -2.51 to -0.05). Conclusion: Female elite adolescent dancers in China may have lower BFP and menstrual problems. Given that lower BFP may contribute to the occurrence of menstruation disorders, it is essential to pay an attention to both BFP and the menstruation status in female elite adolescent dancers.
- Subjects
CHINA; ADIPOSE tissues; BODY mass index; BODY composition; QUESTIONNAIRES; DESCRIPTIVE statistics; MENARCHE; MENSTRUATION disorders; CONFIDENCE intervals; AMENORRHEA; RELIABILITY (Personality trait); DISEASE risk factors
- Publication
Journal of Dance Medicine & Science, 2024, Vol 28, Issue 2, p109
- ISSN
1089-313X
- Publication type
Article
- DOI
10.1177/1089313X241227282