Abstract

The main aim of this study was to assess the Snatch lift technique - performed by elite weight lifter - by (a) comparing the angular kinematics of upper and lower body joints in both side, and (b) determining the mechanical work, the power output, and the linear kinematics of the barbell during the first and second pulls in the snatch lift. For performing data collection and evaluation, the following software have been utilized: Vicon motion-capture system (Nexus 1.8.4) synchronized with two force plates - in addition to using Polygon 3.5.2 and Siliconcoach software. The result of this study shows that the maximum barbell height is about (1.44 m; that is, 93% of his height 1.55 m) and drop displacement is about (29.7 cm; which is, 20% of his maximum barbell height 1.44m). While during the first pull, the lifter has shown 34 degree of knees flexion; in the second pull, athlete planter flexed his ankle for about 17 degree, which is considered an important part to be included in the explosive phase as it contributes to 10% of the total power produced for the pull. During the second pull phase, the relative power outcome has increased by 100 % in comparison of first phase. The velocity in the second pull was significant (2.5 m.s-1), which might be secondary to the relatively lightweight that was lifted (40 Kg). Thus, it will be interesting to see the impact of increasing the weight lifted on the performance of the athlete as well as its influence on the biomechanical variables measured when evaluating the Snatch lift.

Keywords: Snatch Lift · Biomechanical Assessments

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