CAJ | 학술논문

在标枪项目的研究领域,对交叉步结束后右腿用力形式和右脚支撑技术的研究,是国内学术界长期以来关注的焦点问题。交叉步结束右腿着地后的主要任务是尽量减少单支撑的时间,使左腿尽快的着地并尽可能的减少水平速度的损失,快速形成双支撑用力,使身体形成最佳的发力姿势,为最后出枪创造条件。本文通过文献资料法、三维录像解析法、数理统计法对我国优秀男子标枪运动员交叉步结束后右腿运动学特征进行了研究。结果发现,单支撑阶段,我国运动员右腿缓冲时间普遍较长,右膝缓冲的幅度相对较大,多数运动员右膝最大缓冲在身体重心或右髋移过支撑点后的一段时间出现,单、双支撑阶段我国运动员右腿各环节保持速度的能力较弱、加速的能力有待进一步提高。
재표창항목적연구영역,대교차보결속후우퇴용력형식화우각지탱기술적연구,시국내학술계장기이래관주적초점문제。교차보결속우퇴착지후적주요임무시진량감소단지탱적시간,사좌퇴진쾌적착지병진가능적감소수평속도적손실,쾌속형성쌍지탱용력,사신체형성최가적발력자세,위최후출창창조조건。본문통과문헌자료법、삼유록상해석법、수리통계법대아국우수남자표창운동원교차보결속후우퇴운동학특정진행료연구。결과발현,단지탱계단,아국운동원우퇴완충시간보편교장,우슬완충적폭도상대교대,다수운동원우슬최대완충재신체중심혹우관이과지탱점후적일단시간출현,단、쌍지탱계단아국운동원우퇴각배절보지속도적능력교약、가속적능력유대진일보제고。
In the research field of javelin throw, the study on the right leg＇ exerting form and the right foot＇s supporting skill after cross-step is the key point concerned by domestic researchers for a long time. After the cross-step, the main task of the right leg landing is to reduce the supporting time on one-leg, to let the left leg land in order to reduce the loss of horizontal speed as much as possible,to take the shape of double support quickly and exert oneself in order to make the best posture of having an effect,and to create conditions for the javelin to fly. By means of literature review, three-dimensional video recording analysis and mathematical statistics, the authors have studied the kinematical characteristics of the right leg after cross-stride for the outstanding men＇s javelin athletes in China. The results indicate that during the support phase on one leg, the time of the right leg amortizing for Chinese athletes is generally long; the range of right knee amortizing is relatively wide; the biggest amortizing moves in right knee for most athletes appear in the period after the body＇s center of gravity or the right hip moves past the supporting point;during the single and double support phase,the Chinese athletes＇ ability of maintaining speed in various links with the right leg is relatively weak and their acceleration ability is pending for improvement.