UNSUCCESSFUL VS. SUCCESSFUL PERFORMANCE IN SNATCH LIFTS: A KINEMATIC APPROACH
UNSUCCESSFUL VS. SUCCESSFUL PERFORMANCE IN SNATCH LIFTS: A KINEMATIC APPROACH
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DOI：
10.1519/jsc.0b013e318196b843
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发表时间：
2009-03-01
影响因子：
3.2
通讯作者：
Mavromatis, Georgios
中科院分区：
文献类型：
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作者：
Gourgoulis, Vassilios;Aggeloussis, Nikolaos;Mavromatis, Georgios
Gourgoulis, V、Aggeloussis, N、Garas, A 和 Mavromatis, G。抓举举重中不成功与成功的表现：一种运动学方法。 J Strength Cond Res 23(2): 486-494, 2009 - 本研究的目的是确定导致不成功表现的抓举动作的运动学特征，包括杠铃在举重运动员面前的下落。该样本由 7 名参加国际比赛的高水平男子举重运动员组成。他们使用 2 台 S-VHS 摄像机（60 Hz）记录相同负载下成功和不成功的抓举动作，并使用 Ariel 性能分析系统手动将身体和杠铃上的选定点数字化。对数据的统计处理表明，成功和不成功的举重在下肢关节的角位移和速度数据、杠铃的轨迹和垂直线速度、或举重第一次和第二次拉动期间产生的功和功率输出方面没有显着差异（p>0.05）。因此，与成功举重相比，不成功举重中四肢和杠铃的一般运动模式没有发生改变。然而，在杠铃合成加速度矢量的方向上发现了显着差异（p < 0.05），这表明在杠铃上施加正确的力方向对于抓举的成功表现至关重要。因此，教练应特别注意第一次拉起杠铃所施加的力。
Gourgoulis, V, Aggeloussis, N, Garas, A, and Mavromatis, G. Unsuccessful vs. successful performance in snatch lifts: a kinematic approach. J Strength Cond Res 23(2): 486-494, 2009-The purpose of the present study was to determine the kinematic characteristics of snatch movements that result in an unsuccessful performance, involving the barbell's drop in front of the weightlifter. The sample comprised 7 high-level men weightlifters competing at the international level. Their successful and unsuccessful snatch lifts with the same load were recorded with 2 S-VHS camcorders (60 Hz), and selected points onto the body and the barbell were digitized manually using the Ariel Performance Analysis System. The statistical treatment of the data showed no significant differences (p > 0.05) between successful and unsuccessful lifts in the angular displacement and velocity data of the lower-limb joints, the trajectory and vertical linear velocity of the barbell, or the generated work and power output during the first and second pulls of the lift. Consequently, the general movement pattern of the limbs and the barbell was not modified in unsuccessful lifts in relation to the successful ones. However, significant differences (p < 0.05) were found in the direction of the barbell's resultant acceleration vector, suggesting that proper direction of force application onto the barbell is crucial for a successful performance in snatch lifts. Thus, coaches should pay particular attention to the applied force onto the barbell from the first pull.