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Three-dimensional kinematic data were obtained from 15 male wheelchair basketball players performing a successful free throw. Players were divided into two groups, according to their International Wheelchair Basketball Federation (IWBF) classification (Group 1: 2-2.5 point players and Group 2: 4-4.5 point players). The angle of release of the ball was 58 for both groups. Group 2 released the ball from a significantly greater height than Group 1 (1.57 – 0.12m v 1.78 – 0.17m; p < .05). Although nonsignificant, the following trends were found: Group 1 showed greater ball release speeds and generated greater angular velocity of the wrist at release while Group 2 generated greater shoulder flexion angular velocity at release. In conclusion, players from different IWBF classes tend to rely on different kinematic strategies to produce successful release conditions.
Victoria Goosey-Tolfrey and Daniel Butterworth are with the Department of Exercise and Sport Science, The Manchester Metropolitan University, Crewe+Alsager Faculty, Alsager, ST7 2HL, England, UK. E-mail: <email@example.com>. Calvin Morriss is with UK Athletics, 10 Harborne Rd., Edgbaston, Birmingham, B15 3AA, England, UK.