Lim Se-Na, Chai Joo-Hee, Song Jong Kook, Seo Myong-Won, Kim Hyun-Bae
Department of Physical Education, College of Physical Education, Kyung Hee University, Yongin, Korea.
J Exerc Rehabil. 2015 Dec 31;11(6):356-62. doi: 10.12965/jer.150244. eCollection 2015 Dec.
This study compared nutritional intake, body composition, bone mineral density, and isokinetic strength by dance type in collegiate female dancers. The study subjects included Korean dancers (n=12), ballet dancers (n=13), contemporary dancers (n=8), and controls (n=12). Nutritional intake was estimated using the Computer Aided Nutritional Analysis Program. Body composition and bone mineral density were measured using dual-energy X-ray absorptiometry. Isokinetic knee joint strength was measured by Cybex 770-NORM. All statistical analyses were performed by SAS 9.2. Means and standard deviations were calculated using descriptive statistics. One-way analysis of variance was applied to evaluate nutritional intake, body composition, bone mineral density, and isokinetic strength differences. Duncan multiple range test was used for post hoc testing. A level of significance was set at P<0.05. The study results indicated no significant differences in nutritional in-take among dancer types. Despite no significant differences in body composition among dancer types, contemporary and ballet dancers had lower body fat percentages than controls (P<0.05). No significant differences were seen in bone mineral density and bone mineral contents among dancer types. No significant differences were found in isokinetic strength in right or left knee flexion and extension at 60°/sec (P<0.05). There were significant differences in body composition and isokinetic strength between dancer groups and the control group. Further studies of different professional dance type and more scientific methods of dance training are needed.
本研究比较了大学女舞者中不同舞蹈类型的营养摄入、身体成分、骨密度和等速肌力。研究对象包括韩国舞舞者（n = 12）、芭蕾舞舞者（n = 13）、现代舞舞者（n = 8）和对照组（n = 12）。使用计算机辅助营养分析程序估算营养摄入量。使用双能X线吸收法测量身体成分和骨密度。通过Cybex 770-NORM测量等速膝关节力量。所有统计分析均使用SAS 9.2进行。使用描述性统计计算均值和标准差。应用单因素方差分析来评估营养摄入、身体成分、骨密度和等速肌力的差异。采用邓肯多重极差检验进行事后检验。显著性水平设定为P<0.05。研究结果表明，不同舞蹈类型之间的营养摄入没有显著差异。尽管不同舞蹈类型之间的身体成分没有显著差异，但现代舞和芭蕾舞舞者的体脂百分比低于对照组（P<0.05）。不同舞蹈类型之间的骨密度和骨矿物质含量没有显著差异。在60°/秒的左右膝关节屈伸等速肌力方面未发现显著差异（P<0.05）。舞蹈组与对照组在身体成分和等速肌力方面存在显著差异。需要对不同专业舞蹈类型和更科学的舞蹈训练方法进行进一步研究。
