Effects of Dynamic Activity after Static Stretching on Jump Ability and Sprint Performance of College Students

The purpose of this study was to investigate the effect of dynamic activity after static stretching on jump ability and sprint performance of college students. Twenty-four university students, major in physical education (age: 22.0 ± 1.7 yr, height: 172.7 ± 4.9 cm, bodyweight: 66.9 ± 7.0 kg) were participated in this study. Students were randomly assigned into three groups with counterbalanced measures design. All students in each group completed three training conditions, including dynamic activity after static stretching, static stretching only and control treatment with 72 hours washout period between each training condition. The measurements of thirty meter sprint and vertical jump were performed in this study. The results showed that no significant difference was found in 30-m sprint among all training conditions. However, significant improvement in vertical jump was found after dynamic activity. In addition, the performance in vertical jump in the last measurement was significantly lower than the first and second measurement in static stretching training condition. We conclude that jump ability can be enhanced with the intervention of dynamic activity after static stretching. The results of this study suggest that there is no negative effect of static stretching on sprint performance and vertical jump ability of students immediately after stretching. However, it seems to be a delayed negative effect on vertical jump, and vertical jump ability could be enhanced by dynamic activity after static stretching.