Body Characteristics of Professional Japanese Keirin Cyclists： Flexibility, Pelvic Tilt, and Muscle Strength  

作　　者：Yuto Tashiro Satoshi Hasegawa Shu Nishiguchi Naoto Fukutani Daiki Adachi Takayuki Hotta Saori Morino Hidehiko Shirooka Yuma Nozaki Hinako Hirata Moe Yamaguchi Seishiro Tasaka Tomohumi Matsushita Keisuke Matsubara Tomoki Aoyama 

机构地区：[1]Human Health Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan [2]Research Fellow of the Japan Society for the Promotion of Science, Tokyo 102-0083, Japan

出　　处：《Journal of Sports Science》2016年第6期341-345,共5页运动科学（英文版）

摘　　要：OBJECTIVE： To identify muscle imbalances and pelvic tilt with implications for low back pain in Keirin cyclists. METHODS： We enrolled 16 Keirin cyclists （mean age, 32.2 ±8.6 years） and 16 college students as controls （24.3 ± 2.3 years）. We measured pelvic tilt, heel-buttock distance （HBD）, iliopsoas flexibility （using the Thomas test）, hamstring flexibility （using the straight-leg-raise [SLR] test）, finger floor distance （FFD）, and isometric and isokinetic hamstring and quadriceps muscle strength. These parameters were compared between the two groups, as well as between the right and left sides, by using the Mann-Whitney U test or unpaired t test. RESULTS： The results of this study revealed a significant anterior pelvic tilt at standing position and significantly higher HBD, SLR, and FFD in the Keirin cyclists than in the controls. The isokinetic muscle strength of the quadrieeps and hamstring, and the hamstring-to-quadriceps ratio at high angular velocity were significantly greater in the Keirin cyclists. No significant differences were found between the right and left sides. CONCLUSION： This study revealed that the Keirin cyclists had an anterior pelvic tilt and imbalance in hip muscle flexibility, but the difference between the right and left sides were not significant.

关 键 词：Keirin pelvic tilt muscle flexibility imbalance. 

分 类 号：G[文化科学]