DEVELOPMENT OF A SIMULATION MODEL FOR THE SNATCH WEIGHT-LIFT

Abstract

INTRODUCTION Weightlifting is not a pure strength sport but is influenced by technique factors. The major factor determining success is the ability to produce a very high peak power [1]. The best lifters seem able to limit the knee joint moment by precise control of the knee position [2]. For both the snatch and the clean and jerk, pulling the barbell is the most important movement [3]. Bar-path parameters during weightlifting have been outlined and related to body position and kinetic performances [4], and foot displacement was shown not to significantly affect snatch success or lifting ability in collegiate national level lifters. Moreover, bar kinematics and power outputs of the first, second, and total pulls in women weightlifters were investigated, and it was found that training techniques should focus on generating greater vertical barbell velocity [5]. Since the best technique for the snatch may vary among weightlifters, researchers also adopted a theoretical rather than experimental approach. Jamshidi et al. [6] used a neural network model to minimize the created joint torques, but the model validity was not fully discussed. The purpose of this current study is to develop a suitable model for simulating and optimizing the snatch technique.