CAJ | 학술논문

为给短距离场地自行车起动技术的规范化及标准化提供科学依据，以北京市自行车队11名运动员作为实验对象，通过实验设计，结合定点摄像与肌电采集技术研究其原地起动技术的运动学和肌电活动特征，在分析起动技术生物力学因素的基础上，提出改进曲柄起动角的建议。研究认为，影响起动效果的生物力学因素包括3大类：内力因素、器械因素和环境因素，找到内力因素和器械因素的最佳结合点有助于提高起动成绩；实验研究表明，曲柄起动角对场地自行车运动员原地起动60m的成绩具有显著性影响；30°是比较合理的曲柄起动角，在这一起动角上出发有利于提高运动员的起动成绩。
위급단거리장지자행차기동기술적규범화급표준화제공과학의거，이북경시자행차대11명운동원작위실험대상，통과실험설계，결합정점섭상여기전채집기술연구기원지기동기술적운동학화기전활동특정，재분석기동기술생물역학인소적기출상，제출개진곡병기동각적건의。연구인위，영향기동효과적생물역학인소포괄3대류：내력인소、기계인소화배경인소，조도내력인소화기계인소적최가결합점유조우제고기동성적；실험연구표명，곡병기동각대장지자행차운동원원지기동60m적성적구유현저성영향；30°시비교합리적곡병기동각，재저일기동각상출발유리우제고운동원적기동성적。
In order to standardize and correct the starting technical movement of track cycling, this paper proposed a hypothesis of better crank starting angle on the basis of analyzing the bi- omechanical factors of starting technology, than use experimental method to verify the hypothe- sis. In this experiment, 11 players of Beijing track cycling team were taken as experimental ob- jects, fixed camera technique and surface electromyography collection technology were used to explore the starting performance with different crank starting angle. The results showed that the biomechanical factors influencing the starting effect can be divided into three categories.in- ternal factors, equipment factors and environmental factors. Finding out the best combining site of these three factors helps to improve the starting performance. The crank starting angle has a significant effect on 60 meters starting performance and 30 ° is a reasonable crank starting an- gle.