1988年漢城奧運會百位尺跑優勝前5、6名之起跑反應時間和各lOA尺 分段時間做研究，發現(1)男女子組之反應時間在0.151-- 0.156 + 0.016-- 0.026秒; (2)男子組反應時間和各lOA凡分段時間之相關係數均達0.50以上， 作反應時間預測分段時間之位式;(3)男女子組後段時間均快於前段時間，達P <0.01的顯著水準; (4)男子前後段時間之百分率差值大於女子組，達P

Reaction time and fraclion time of the excellent six athletes in both male and female 100 meter run in 1988 Olympic Game are used as research data. The results are listed as follows: 1.The reaction time is 0.151 � O. J 56士0.016 - 0.026 seconds. 2. The correlation coefficients among reaction time and ;allthe 10 meter fraction times in male athletes reveal more than 0.500 respectively， and their regressional equation are made. 3. The second half times in both male and female athletes are faster than those of the first half time， P