IMMEDIATE EFFECTS OF WARM UP BY OVERWEIGHED BAT IMPLEMENT ON BAT SWING VELOCITY

Hui-Ping Tu¹, Chen-Ju Chien² and Gin-Chang Liu³.

¹National College of Physical Education and Sports, Taipei, Taiwan. ²Kaohsiung Girls' High School, Kaohsiung, Taiwan. ³Hung Kuang Institute of Technology, Taichung, Taiwan.

The purpose of this study was to investigate the immediate effects of warm up by overweighed bat implement on bat swing velocity. Five softball players served in this experiment and processed the following steps: swing official bat with and without overweight warm ups (5 and 10 times). Maximal velocity of official bat swing was recorded by 3-D cinematograph. By one-way ANOVA, the results were described as following: the maximal velocity of official bat swing after 5-swingings of the overweight bat was greater than that without warm up (F=9.28, p<.05), and the maximal velocity of official bat swing, after 10-swingings of the overweight bat, with the increasing tendency, but without significant difference compared to swinging without warm up.