Document Type : Research Paper



Finding the optimal techniques is one of the aims of sport biomechanics science. According to previous soccer kick studies, the pattern of optimal technique has been computing by analyzing the kinematic and kinetic parameters of elite soccer player.  The purpose of this study was finding the optimal soccer kick pattern in forward swing phase to achieve a maximum speed shot. The solution approach which is suggested to produce the optimal technique is to use the mechanical modeling by applying the motion equations. This model has some advantages compared to experimental study such as changing the model parameters separately, low cost and run repeatedly the model. A two-dimensional four-link dynamic model is introduced and by applying the appropriate constraints, the genetic algorithm is used to achieve the optimal technique. The computed pattern was compared with six skill subject’s patterns that Acquired by cameras (240Hz). The results showed significant deference in joints angular displacement patterns between computed and subjects techniques. Also, the computed pattern velocity increased 62.5 percent more than subject’s pattern and the computed pattern was similar to reported in previous studies. Therefore, the computed pattern is valid for human according to human body physiology and mechanics. Using the model in this study can create interaction between joint and segments and enhance Motion-Dependent Moment in distal segment and improve speed and quality of the kick. Therefore, it is important and necessary to enhance muscle strength and improve neuromuscular coordination. In a nutshell, this model is an apparatus which can available for trainers to teach optimal technique of soccer instep kick to athletes specifically.


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