Flexibility of muscles is considered as a factor preventing sport injuries. The purpose of this research was to examine the effect of three sports, namely futsal, weightlifting, and swimming, on flexibility of pelvic and hip muscles in order to determine the relationship between the types of sports and flexibility of muscles under evaluation. 75 male athletes, 25 subjects for each sport with average 23.18 years old were evaluated. The data were collected by means of filling out questionnaires and by measuring the flexibility of 12 muscles on both sides of pelvic and femoral area. Data were analyzed by student’s t-test. The results revealed a significant difference of iliopsoas and abductor longus muscles flexibility in swimmers, while a significant difference of quadriceps and hamstring muscles flexibility in weightlifters and a significant difference of tensor fasciae latae and piriformis muscles flexibility in futsal players. In each sport, a group of muscles, selectively, gain more flexibility than other muscles; thus, in order to prevent sport injuries, we must pay attention to all muscles and separately, stretch them in sport exercises
