舞蹈與骨質代謝

　　舞蹈運動結合了運動與藝術，使肢體、音樂與戲劇融為一體，形成一特殊的表演藝術。但大部份舞者生活型態中潛藏許多不利於骨質量的危險因子，諸如：抽煙、酗酒、飲食失調等等。在舞者族群中，骨質流失常結合眾多因素而身體組成改變與控制為其大宗，本篇以飲食問題切入說明與骨質量之因果關係，統整身體組成與其他因素，對於骨調控荷爾蒙瘦體素 (Leptin)和副甲狀腺素 (Parathyroid Hormone, PTH)等目前研究之進展與作用生理機制，進而探討女性月經週期和運動影響內分泌系統對於骨質量的影響作用。另者，本文並比較舞蹈運動與其他運動骨質量的差異，明確在舞者骨骼無負重部位發現骨質量流失現象，並闡述可能之作用機轉。藉此期能提醒舞者注意身體變化，減少舞者骨質量的危險因素，以期降低此族群骨質疏鬆症之發生機率，且持續維持運動的習慣亦為維持良好骨密度的保健之道。 　　Professional dancers involves extreme physical demands on the body—in part, strains beyond the physiological limits. Dancers were potentially undergoes several risk factors of osteopenia throughout out their lifespan including weight control, alcohol or tobacco consumption or poor nutritional habits. Energy restriction caused by eating disorder or poor nutritional not only affects the balance of nutrient but also the balance of those hormones modulates it. Nevertheless, osteopenia often combined multiple and complicated factors including diet and hormone states. Among all those factors, change of body composition was the most important factor among dancer population. Therefore, integration body composition with other factors, to bone regulating hormones like leptin and PTH current research progress and physiological mechanisms, and compare the bone mass difference between dance and other exercise, at non weight-bearing bone site clearly found the bone loss indeed, if could reducing the risk factors of dancers, believe can reduce osteoporosis happened , and continues to maintain regular exercise are good to maintain bone health.