Research On The Effect Of Static And Dynamic Stretching On The Balance Performance In College Students

Objective: The purpose of this study is to explore the effects of static and dynamic stretching on the balance ability of college students,and to observe the changes of balance ability under acute and delayed effects after stretching intervention.This study provide the basis for enhancing sports performance,reducing the risk of sports injury,formulating personalized stretching scheme and selecting the best stretching method,and provide data support and practical reference for the application of the two stretching methods in physical education teaching and practical training.Methods: In detail,a total of 92 college students without stretching habits were selected and taken as the research objects to be divided randomly into experimental group(static and dynamic balance experimental group)and control group.Each group needed to carry out 3experiments:familiarity with the test process and stretching plan and the balance test before the experiment,static stretching intervention and dynamic stretching intervention.The time interval of each stretching was one week.After stretching intervention,the static balance ability was measured by Zebris for 1-10 minutes in the static balance experimental group,and the acute dynamic balance ability was measured with star excursion balance test in the dynamic balance experimental group.Results:(1)By comparing the effects before and after static stretching intervention,the following indexes showed significant difference: the path length of movement of pressure center and the average velocity of movement of pressure center at the point of 1 min,2 min and 3 min respectively;the area of movement of pressure center at the point of 1 min,2 min,3 min,4min and 5 min respectively;the length of short-axis trajectory and long-axis trajectory at the point of 2 min,3 min,4 min and 5 min respectively.By comparing the effects before and after dynamic stretching intervention,the following indexes showed significant difference: the path length of movement of pressure center and the average velocity of movement of pressure center at the point of 1 min,2 min,3 min,4 min,5 min and 6 min respectively;the area of movement of pressure center at the point of 2 min;the length of long-axis trajectory at the point of 2 min and 4 min respectively.While the length of short-axis trajectory was without difference.(2)By compared with the dynamic stretching and control group,the following indexes of static stretching group showed significant difference:the area of movement of pressure center at the point of 1 min,2 min,3 min,4 min and 5 min respectively,the length of short-axis trajectory at the point of 1 min,2 min,3 min,4 min,5 min and 7 min respectively,and the length of long-axis trajectory at the point of 2 min,3 min,4 min and 5min respectively.(3)The standardized indexes of dynamic balance in every directions of left and right foot support were with statistical significance before and after static and dynamic stretching intervention.(4)By compared with the static stretching and control group,the standardized indexes of dynamic balance in every directions of left and right foot support of dynamic stretching group were with significant different.Conclusions: After the static and dynamic stretching intervention,the indexes of static balance ability are improved in different degrees at the point of 1 min,2 min,3 min,4 min,5min and 6 min respectively.The effect of static and dynamic stretching intervention on the static balance ability of college students can last for about 5-6 minutes.The effect of static stretching intervention on college students’ static balance ability is better than dynamic stretching and control group.After the intervention of static and dynamic stretching,the standardized indexes of dynamic balance ability in every directions are significantly different.The acute dynamic balance ability of college students is improved after the intervention of static and dynamic stretching.In addition,the effect of dynamic stretching on college students’ dynamic balance ability is better than static stretching and control group.