CONFIGURATION SET TO MOTION SIMULATION FOR BACKHAND STROKE OF TENNIS

Many people sustain injuries while playing tennis due to improper methods of impacting the ball and insufficient muscle warm-up. A common injury of playing the backhand stroke would be either elbow flexor strain or extensor strain. It is popular to analyze the motion of backhand stroke using kinematics and kinetics of upper extremities. In this research, the LifeMOD™ module developed from a commercially available software, ADAMS, was used for simulation. The objective is to determine the relatively fitting parameters, using compared results obtained from LifeMOD™ and Matlab. According to various researches, the parameters for each human joint set in LifeMOD™ that would play key roles for the results are stiffness, damping, and weighting. For stiffness and damping parameters, 105 N/m and 104 Ns/m respectively, is a better set for each joint. And for the weighting parameter, 10 is the best setting value for wrist joint, yet, either setting value would be applied for rest joints. In addition, the simulation model would be facile to observe the forces and moments of the joints in kinematics and kinetics for tennis backhand stroke.