, 2008). However, these studies used only single-trial MG132 proteasome sprint protocols, neglecting to address the repeated-effort sprint requirements specific to the nature of many field and court sports. The relationship between the force-generating capacity of muscles and repeated-sprint ability has received little attention (Kin-??ler et al., 2008). Amputee soccer is gaining popularity throughout the world and it represents a game that places demand on anaerobic performance, muscular strength, sprint performance, balance and locomotor capacity. In amputee soccer, matches are played between teams of seven players using bilateral crutches. Wearing a prosthetic device is not allowed during match play (Yaz?c?oglu et al., 2007a). The match is played in two equal periods of 25 minutes each.
Play may be suspended for ��time-outs�� of one per team per half which must not exceed one minute. The half time interval must not exceed 10 minutes (Yaz?c?oglu et al., 2007b). These rules emphasize the importance of body composition, anaerobic performance and speed of action, three different variables that have not been hitherto studied within this frame. Therefore, the purpose of the present study was to investigate the relationship composition, anaerobic performance and sprint performance of amputee soccer players. Methods Subjects Fifteen male amputee soccer players with unilateral below-knee amputation participated in this study voluntarily. The causes of amputation were gun shot in 13 subjects, traffic accident in one subject and congenital malformation in one subject.
Their mean age, height, body mass and body fat were 25.5 ��5.8 yrs, 169.8 �� 5.5 cm, 66.5 �� 10.2 kg and 10.1 �� 3.6 %, respectively. The study group consisted of active football players of the amputee football team and all the players were the members of the same team competing in Amputee Super League and trained for two hours five days per week. Subjects�� mean training experience was 3.3 �� 2.9 yrs. Subjects were informed about the possible risks and benefits of the study and gave informed consent to participate in this study. Procedures Anthropometric Measurements The body height of the soccer players was measured by a stadiometer with an accuracy of �� 1 cm (SECA, Germany), and an electronic scale (SECA, Germany) with an accuracy of �� 0.1 kg was used to measure body mass.
Skinfold thickness was measured with a Holtain skinfold caliper (Hotain, UK) which applied a pressure Carfilzomib of 10 g/mm2 with an accuracy of �� 2 mm. Gulick anthropometric tape (Holtain, UK) with an accuracy of �� 1 mm was used to measure the circumference of extremities. Diametric measurements were determined by Harpenden calipers (Holtain, UK) with an accuracy of �� 1 mm. The soccer players�� somatotypes were then calculated using the Heath-Carter formula (1990) and the percentage of body fat was determined by the Jackson and Pollock formula (1978).