本文選題：垂直高度 + 水平距離��； 參考：《中國(guó)運(yùn)動(dòng)醫(yī)學(xué)雜志》2017年10期

【摘要】：目的:研究高度和遠(yuǎn)度對(duì)單腿下落過(guò)程中相關(guān)生物力學(xué)特征的影響。方法:采用踢球法和單腿前跳法選取30名右側(cè)為優(yōu)勢(shì)側(cè)的體育學(xué)院男生作為受試者,運(yùn)用Vicon紅外高速運(yùn)動(dòng)捕捉系統(tǒng)和Kis-tler三維測(cè)力臺(tái)對(duì)受試者進(jìn)行不同高度(20 cm、40 cm和60 cm)和遠(yuǎn)度(30 cm、50 cm和70 cm)的單腿下落測(cè)試,采集著地過(guò)程中優(yōu)勢(shì)側(cè)的地面反作用力峰值及下肢三關(guān)節(jié)的屈伸角度等運(yùn)動(dòng)學(xué)數(shù)據(jù),用3×3混合多元方差分析檢測(cè)高度和遠(yuǎn)度對(duì)單腿下落過(guò)程的影響,檢驗(yàn)水準(zhǔn)選擇α=0.05。結(jié)果:各方向GRF峰值及對(duì)應(yīng)時(shí)間、下肢三關(guān)節(jié)屈伸峰值角度及對(duì)應(yīng)時(shí)間、踝內(nèi)翻峰值角度在不同高度間的差異有統(tǒng)計(jì)學(xué)意義;而向后方向GRF峰值及各方向GRF峰值對(duì)應(yīng)時(shí)間、踝伸及內(nèi)翻峰值角度、髖屈峰值角度在不同遠(yuǎn)度間的的差異有統(tǒng)計(jì)學(xué)意義。結(jié)論:(1)單腿下落過(guò)程中,隨著下落高度的增加,地面反作用力峰值逐漸增大,而地面反作用力峰值的出現(xiàn)時(shí)間則越來(lái)越早;同時(shí),下肢三關(guān)節(jié)的屈伸峰值角度、踝內(nèi)翻峰值角度及相應(yīng)峰值角度的出現(xiàn)時(shí)間都逐漸延長(zhǎng)。(2)單腿下落過(guò)程中,隨著遠(yuǎn)度(水平距離)的增加,向后方向地面反作用力峰值逐漸增大,而各方向地面反作用力峰值出現(xiàn)時(shí)間則越來(lái)越早;另一方面,遠(yuǎn)度能促使踝內(nèi)翻峰值角度和髖屈曲峰值角度增加,從而使踝屈曲峰值角度減小以及對(duì)應(yīng)時(shí)間延長(zhǎng)。
[Abstract]:Aim: to study the effects of height and distance on the biomechanical characteristics of single leg falling. Methods: a total of 30 male sports college students with the right side as the dominant side were selected as subjects by kicking and one-legged forward jumping. Using the Vicon infrared high-speed motion capture system and the Kis-tler three-dimensional dynamometer, the single leg drop tests were carried out on the subjects at different heights of 20 cm ~ (10 cm) and 60 cm) and a distance of 30 cm ~ (10) ~ 50 cm and 70 cm). The kinematics data such as the peak value of the ground reaction force on the dominant side and the flexion and extension angle of the lower extremity joint during landing were collected. The influence of height and distance on the falling process of one leg was detected by using 3 脳 3 mixed multivariate variance analysis, and the level selection 偽 0.05 was tested. Results: there were significant differences in GRF peak value and corresponding time in all directions, flexion and extension angle and corresponding time in three joints of lower extremity, ankle varus peak angle in different height, but in backward direction GRF peak value and GRF peak value in each direction. The peak angle of ankle extension and varus and the peak angle of hip flexion were significantly different from each other. Conclusion the peak value of the ground reaction force increases gradually with the increase of falling height, and the peak value of the ground reaction force appears earlier and earlier, and the angle of flexion and extension of the three joints of the lower extremity is also increased during the fall of one leg. The peak angle of malleolus varus and the time of occurrence of peak angle of the corresponding peak value are gradually prolonged during the fall of single leg. With the increase of distance (horizontal distance), the peak value of the reaction force toward the ground to the rear increases gradually with the increase of distance (horizontal distance). On the other hand, the peak angle of ankle varus and hip flexion can be increased by the distance, so that the peak angle of ankle flexion decreases and the corresponding time is prolonged.
【作者單位】： 合肥師范學(xué)院;
【基金】：2015年地方高校國(guó)家級(jí)大學(xué)生創(chuàng)新創(chuàng)業(yè)訓(xùn)練計(jì)劃項(xiàng)目(編號(hào):201514098033)
【分類號(hào)】：R87
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本文編號(hào)：1828252