The snatch requires the barbell to be lifted from the floor to a straight-arm overhead position in one continuous motion (Gordon et al, 2012). The increase of performances is depending on the improvement of proper technique and training methods (Hung-Ta et al, 2010). Determining the effects of barbell weight towards to kinematics profiles is indispensable to find the effective technical factors of successful lifts [15]. To investigated the kinematics motion of angle of ankle, knee, hip, velocity and bar trajectory in two differences weights to performance of snatch. This study used descriptive with retrospective case control method by recording kinematic motion of 6 (six) male Olympic weightlifters. The 3 HD cameras (Sony NKX-VG30EH) are installed approx 90° on the frontal, dorsal and sagittal of the platform with 9m distances and analyzed by SIMI Motion Software. The result will be discussed In three parts, the first is various lifting phase, secondly is the compare lifting between success and unsuccessful, and lastly is to compare the outstanding player with the general. Conclusion through kinematic analysis can be used to observe technical insufficiencies that cannot be observed in the real time malfunction, so that the coach can find the problem and create specific exercises more accurately.
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