Correlation between sway parameters of center of pressure in static and dynamic balance indices with eyes closed after four weeks static warm up in skilled gymnast athletes

The aim of this study was to investigate between sway parameters of center of pressure in static and dynamic balance indices with eyes closed after four weeks static warm up in skilled gymnast athletes.
Material and In this study, 16 skilled female gymnasts (with mean age 9.62±1.45 years) were randomly categorized into two groups: general warm-up (control), general warm-up and static stretching. The first protocol included a 10 minute jogging, and the other group was tested for static stretch (SS) during 4 weeks and three times a week. Before and after four weeks the activity, the indicators of the equilibrium of anterior-posterior and internal-external pressure fluctuations range, and track length of the anterior-posterior and internal-external pressure center in four static and dynamic situations (both with one leg, and with two legs) were investigated using a dynamometer system equipped with 7 cameras and Kistler force plate.
The results showed a significant increase in static balance with both feet and a feet by removing visual input in a state of equilibrium with static warm-up protocol after four weeks (P=0.001), But dynamic balance on two legs and one foot with static warm-up protocol was significantly decreased after four weeks (P=0.001, P=0.005, respectively).
The results may indicate that long duration static stretch exercises can improve static balance with both feet and a foot in gymnast athletes, but long duration static stretch exercises may disturb the function of the dynamic balance and so may cause sport injuries in athletics