The Effects of Four Different Muscle Stretching Techniques on Flexibility of Hamstring Muscle Group and Active and Passive Knee Extension in Elite Soccer Player
نویسندگان
1
2
3
doi
چکیده
The aim of the present study was to determine the most effective stretching method to restore hamstring flexibility in a minimum period in male soccer player. Forty four soccer players (age range: 20-29 years) were selected by simple non-probability sampling. Subjects were randomly assigned to four groups, (11 members each group): (1) static stretching group, (2) hold-relax stretching group (HR), (3) stretching after post isometric relaxation (PIR), and (4) stretching based on reciprocal inhibition principle (RI). Stretching was carried out for six weeks, 6 sessions per week, and 2 minutes each session. Active and passive knee extension and passive hip flexion (degrees) were measured by a goniometer. The obtained data were analyzed by one-way ANOVA and repeated measures. Active knee extension increased from 155.1?2.5 to 170.9?3.4 in static stretch group, from 157.5? 4.5 to 174.9 ? 2.9 in HR group, from 155.2 ? 4.5 to 171 ? 2.9 in PIR group, from 156.4 ? 2.5 to 170.6 ? 3.9 in RI group (P
