The body center of mass in successful and unsuccessful jump shot in elite men basketball players

The purpose of this study was to compare the situation of center of mass in basketball successful and unsuccessful jump shot from two distances 4/25 and 6/25 meters. Six right hand men of the best shooters present in the country’s basketball super league having average and standard deviation age of (23/33± 3/04 years), height of (189/67±2/21 cm) and weight of (84±5/58 kg), with 10±2/5 years experience playing in national team who played in point guard and forward position participated in this study. A marker is installed at %57 of the player’s height and 2 high speed kodak camera operating at 60 frames per second have been used for recording jump shot performance in distances of (4/25 m) and (6/25m). Information that gained, by use of 3DS max8 software was analyzed. Comparison between the mean of kinematics parameters of center of mass done by used of wilkxson test (p<0/05). Maximum mean of center of mass in 4/25 meter (s4) successful shot was 10cm more than unsuccessful(f4) shot and in 6/25 meter and in successful shot(s6) was 3 cm more than unsuccessful(f6) shot. Release of ball in(f4) and (s4) was happen 0/07 s after Maximum height of jump and in (f6) 0/02 s before maximum height of jump but in(s6) was synchronized with maximum height of jump. Total time from take-off to landing for 3 point shot was grater of 2 point (4/25 meter) shot. However in this distance ball released in lesser percent of jump height than 2 point shot. These findings are as same as Elliot et all. (1989) and did not show significant difference between successful and unsuccessful jump shot.