本研究以八名國中男子羽球代表隊為對象，平均平齡為 15 歲。 探討改變訓練時 段前後，在不同時間，對握力、垂直跳、反覆跳及全身反應時間等測驗成績的影響。並收集 體溫，觀察其變化。結果顯示，（一）改變訓練時段前動作反應時間測驗成績，訓練時段高 於非訓練時段（ t=-1.888 ），但未達顯著水準（ p>0.05 ）。（二）改變訓練時段前反覆 側跳（ t=-5.173 ）、握力（ t=-5.003 ）、垂直跳（ t=-6.964 ）等測驗成績訓練時段均 高於非訓練時段， 且達顯著水準（ p<0.05 ）。 （三）改變訓練時段後動作反應時間（ t=-0.459 ）、反覆側咷（ t=-1.375 ）、 握力（ t=-1.331 ）、垂直跳（ t=-0.800 ）等 項目測驗成績，訓練時段均高於非訓練時段，但未達顯著水準（ p>0.05 ）。（四）改變訓 練時段後，選手之日間體體溫節奏未受影響。

　　　　　The study was conducted by 8 subjects, junior high school male badminton players. The mean age was 15 years old. We investigated the effect of changing training time on grip strength, vertical jump, side step and total reaction time performance. We also collect the data of body temperature status. The results showed: 1. The movement reaction time is greater in training time than non-training time while before changing the training time, but not significantly (P>.05). 2. The performance of side step, grip strength and vertical jump is better in training time than non-training time (P<.05) while before training time. 3. The performance of movement reaction time, side step and vertrcal jump is better in training time than non-training time while after changing training time, but not signficantly (P<.05). 4. The body temperature rhythm doesn't change after changing training time.