Sex differences in perceived importance of hamstring stretching among high school athletes

Adolescent athletes completed a hamstring stretching technique and opinion survey and were measured for hamstring extensibility during preparticipation examination. Hamstring muscle group stretching practices, extensibility, and perception of importance to injury prevention, athletic performance, warming-up, cooling down, and coaches were contrasted by sex. As expected, girls displayed greater hamstring muscle group flexibility than boys. Boys and girls reported similar hamstring stretch repetitions and stretch duration. Boys scored hamstring stretching as being more important to improved athletic performance and to their coaches than did girls. Differences were not evident between groups for prevention of injury, warm-up, or cool-down. The lower perception of hamstring stretching importance for improving athletic performance and a lesser perception of hamstring stretching importance to their coaches suggests that adolescent female athletes and their coaches may not fully understand the value of static hamstring stretching. Modified hamstring stretching technique may selectively increase hamstring extensibility among girls without contributing to increasing capsuloligamentous knee joint laxity.