The acute effect of static and dynamic stretching on running economy and hemodynamic responses before submaximal activity in men soccer player

This research aimed to examine the acute effect of static and dynamic stretching before submaximal activity on running economy and hemodynamic responses in men soccer player. 12 men soccer player from Army Islamic Republic of Iran with average age of 21.08± 1.24 years ; weight: 69.75 ± 3.95 kg ; height: 175 ± 6.11 cm; body fat: 8.7 ± 1.12% ; BMI:22.66 ± 1.27 kg/m2; maximum oxygen uptake(Vo2max): 44.33 ± 4.22 ml.kg-1.min-1) participated voluntarily in this study. After measurement of Vo2max, the subjects performed three test in three separate sessions. Two protocols consist of static and dynamic stretching and one protocol without stretching before submaximal activity (include: 13 min of treadmill running at 65% Vo2max). Respiratory gas exchange, running economy and hart rate was measured by gas analyzer during the running exercise and chest belt and blood pressure was measured immediately after running. A repeated measures ANOVA (SPSS, ver 18.0) was used to compare the three interventions(P≤0.05). The results showed there is no significant differences between static & dynamic stretching between three interventions. Although we conclude that a static and dynamic stretching routine probably does not harm or benefit running economy orhemodynamic responses compared to no stretching before submaximal exercise.