發(fā)布時間：2018-07-07 11:32

  本文選題：百米 + 起跑技術(shù)��； 參考：《山東體育學院學報》2017年02期

【摘要】：通過文獻資料法、高速攝像與錄像解析的方法,揭示蘇炳添百米前三步起跑加速技術(shù)特點,為科學化訓練提供理論依據(jù)。研究結(jié)果表明,在預備姿勢時,蘇炳添后腿膝關節(jié)角度相對較小,身體重心離起跑線水平距離較近,前腳跖趾關節(jié)與身體重心間水平距離適中;在后蹬過程中,支撐腳蹬離地面時軀干姿勢前傾度較大、身體重心較低、重心水平速度較大,而擺動腿前擺時質(zhì)心較低、膝關節(jié)角度較大、足部貼近于地面;在蹬離起跑器后的前三次著地時刻,身體重心高度較低,重心位置處于著地腳的跖趾關節(jié)之前,且兩者水平距離差相對較大,擺動腿膝關節(jié)角度較大;在步長方面沒有表現(xiàn)出依次漸長現(xiàn)象,而是第一步步長最大,第三步步長又大于第二步,步頻表現(xiàn)則為逐漸加快。
[Abstract]:Through the methods of literature, high speed camera and video analysis, the paper reveals the technical characteristics of Su Bingtian's first three steps of starting and accelerating, and provides a theoretical basis for scientific training. The results show that Su Bingtian's knee joint angle is relatively small, the body center of gravity is close to the starting line and the horizontal distance between the forefoot metatarsophalangeal joint and the body gravity center is moderate. When the supporting foot leaves the ground, the posture of the trunk tilts forward, the body center of gravity is lower, the center of gravity is higher, and the center of mass is lower, the knee joint angle is larger, and the foot is close to the ground when swinging the leg in front of the body. In the first three landing moments after pedal off the starter, the height of the body gravity center is lower, the center of gravity is in front of the metatarsophalangeal joint of the ground foot, and the horizontal distance between the two is relatively large, and the knee joint angle of the swing leg is larger. The first step is the largest, the third step is larger than the second step, and the step frequency is gradually accelerated.
【作者單位】： 北京體育大學;國家體育總局體育科學研究所;
【基金】：國家體育總局體育科學研究所基本科研業(yè)務費課題(基本15-02、基本16-02、基本16-48)
【分類號】：G822.1
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本文編號：2104834