目的：本研究目的在設計一套游泳專項核心肌群訓練，探討核心肌群訓練對游泳海豚式打水速度表現之影響。方法：以22名內湖國小游泳隊選手，平均年齡11.27 ± 0.75歲，身高151.05 ± 7.26公分，體重42.45 ± 8.09公斤。實驗隨機分為實驗組與對照組，每組各為11人，實驗組在每次訓練課前，額外進行六週，每週三次的專項核心肌群訓練，所有受試者於實驗前、後皆進行25公尺的海豚式打水測驗。前後測數據以混合二因子變異數分析，比較訓練前、後25公尺海豚式打水（速度）成績差異。結果：六週核心訓練後，接受訓練的實驗組在25公尺的海豚式打水速度有顯著進步，均達顯著差異（p＜.05），且進步幅度明顯高於對照組。
Purpose: The study was to design a set of core muscle training and to investigate the effect of core muscle training on swimmers’ performance of dolphin kick. Methods: The subjects were 22 swimming athletes of Nei-Hu elementary school. All subjects’ average age, height and weight were 11.27 ± 0.75 years, 151.05 ± 7.26 cm and 42.45 ± 8.09 kg respectively. All subjects were divided randomly into core training group (n=11) and control group (n=11). The core training group accepted core muscle training three times per week for six weeks. All subjects were assessed 25 meters of dolphin kick test pre and post-training period. Mixed design two-way ANOVA was used to compare the results and statistics of pre-test and the post-test. Results: After six-week core muscle training, the statistics revealed core training group had significant progress in 25 meters of dolphin kick and indicated significant difference in effect between pre-test and post-test (p＜.05), and the range of progress were significantly greater than that of the control group.
