上海女子自行车运动员冲刺骑行中的下肢运动学评价
Kinematic Evaluation of Lower Limbs during Sprint Riding of Female Cyclists
投稿时间:2017-10-11  
DOI:
中文关键词:自行车  生物力学  运动学
英文关键词:bicycle  biomechanics  kinematics
基金项目:上海市科委资助课题(12231203000)
作者单位E-mail
何俊良 上海体育科学研究所 heh2h3@163.com 
许以诚 上海体育科学研究所  
马国强 上海体育科学研究所  
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中文摘要:
      对女子短距离自行车运动员45 s全力冲刺骑行进行下肢运动学分析,探讨不同水平运动员速度能力的特点,筛选可评价下肢踏蹬技术的运动学指标。使用三维红外运动捕捉系统及SRM自行车测功仪,采集上海自行车队4名女子短距离运动员场地车滚筒练习台上45 s全力冲刺骑行中的下肢运动学参数和踏频。结果表明,钟××速度能力较好,45 s全力冲刺骑行各阶段平均速度较高,但下肢踏蹬"圆滑度"还需进一步提高;顾××和姚××后程速度下降明显,速度耐力明显不足。在全力冲刺骑行后期,运动水平较高的运动员(钟××)踝关节活动度下降明显小于运动水平较低的运动员(顾××和姚××),提示踝关节活动度下降是影响自行车短距离项目运动员速度耐力的因素之一。
英文摘要:
      This paper makes a kinematic analysis of female sprint cyclists sprinting for 45s so as to explore the characteristics of the speed capability of different-level athletes and screening and selecting the kinematic indexes for evaluating lower extremity technique. Three-dimensional motion capture system and SRM were used to collect the kinematic parameters of the lower limbs and pedaling frequency of 4 sprint cyclists of Shanghai Cycling Team, who practised sprint cycling for 45s on a practice stage. The result shows that Zhong's speed capacity is better. Her average speed of the different phases of 45s sprinting is higher, but the smoothness of her lower limb pedaling needs to be improved. The latter half speed of Gu and Yao decreased significantly, which shows their insufficient speed endurance. During the latter half sprinting, the decrease of the ankle-joint range of motion (ROM) of Zhong, a higher-level athlete, is obviously less than those of Gu and Yao, the lower-level athletes, which suggests that the decline of ROM is one of the factors affecting the speed endurance of sprint cyclists.
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