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

【摘要】：通過(guò)文獻(xiàn)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(diǎn),為科學(xué)化訓(xùn)練提供理論依據(jù)。研究結(jié)果表明,在預(yù)備姿勢(shì)時(shí),蘇炳添后腿膝關(guān)節(jié)角度相對(duì)較小,身體重心離起跑線(xiàn)水平距離較近,前腳跖趾關(guān)節(jié)與身體重心間水平距離適中;在后蹬過(guò)程中,支撐腳蹬離地面時(shí)軀干姿勢(shì)前傾度較大、身體重心較低、重心水平速度較大,而擺動(dòng)腿前擺時(shí)質(zhì)心較低、膝關(guān)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(shí)刻,身體重心高度較低,重心位置處于著地腳的跖趾關(guān)節(jié)之前,且兩者水平距離差相對(duì)較大,擺動(dòng)腿膝關(guān)節(jié)角度較大;在步長(zhǎng)方面沒(méi)有表現(xiàn)出依次漸長(zhǎng)現(xiàn)象,而是第一步步長(zhǎng)最大,第三步步長(zhǎng)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(xué);國(guó)家體育總局體育科學(xué)研究所;
【基金】：國(guó)家體育總局體育科學(xué)研究所基本科研業(yè)務(wù)費(fèi)課題(基本15-02、基本16-02、基本16-48)
【分類(lèi)號(hào)】：G822.1
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本文編號(hào)：2104834