Bone Quality in Female Ballet Dancers: A Possible Determinant of Bone Health

• 作者: Hiroki Funasaki Hiroteru Hayashi Keishi Marumo Mayumi Kuno-Mizumura Mitsuru Saito
• 来源期刊: 矫形学期刊(英文)
• 学科: 医学
• 关键词: BONE Quality BONE Mineral Density FEMALE Athletes BALLET DANCER
• 年，卷（期）: 2017,（9）
• 页码范围: 284-293
• 页数: 10页
• 分类号: R5

摘要

Hypotheses:Values of serum markers related to bone quality are abnormal in young female ballet dancers. Methods: In 13 elite Japanese female ballet dancers (average age, 22 years), markers related to bone quality were investigated. These included: serum homocystein (HC), a marker of increased oxidative stress;pentosidine (Pent), a marker of glycation- or oxidation-induced non-enzymatic cross-links;markers of bone metabolism (bone alkaline phosphatase, BAP;tartrate-resistant acid phosphatase 5b, TRAP5b) and bone mineral density (BMD). It was determined whether there is a relationship between bone quality markers’ levels are related to amenorrhea and/or fatigue fractures. Results: Two dancers had fatigue fractures and 3 had a history of secondary amenorrhea. The average BMD was 1.305 ± 0.12 (g/cm2), in all these cases the Z-score was higher than -1.0. Although the serum levels of BAP, TRAP5b, and HC were normal in all examined dancers, in 2 out of 3 dancers with a history of secondary amenorrhea, pentosidine serum levels were increased. No relationship between bone quality markers’ levels and fatigue fractures was found. Conclusion: Latent deterioration of bone quality may occur in female athletes with secondary amenorrhea and otherwise normal BMD and calcium metabolism markers.