目的：本研究目的在於探討發展協調障礙兒童與一般發展兒童執行射箭任務心跳減速、射箭表現之差異，並探討心跳減速與射箭表現之相關性。方法：本研究以11-12 歲20 位（10 男、10 女）發展協調障礙兒童及20 位（10 男、10 女）一般發展兒童為研究參與者。研究利用心跳監控錶(RS800, Polar Electro Oy,Finland)記錄參與者執行射箭任務之心跳反應，並記錄參與者的每箭成績。研究採用獨立t 檢定(Independent t test)比較兩組參與者射箭表現與心跳減速之差異。此外，以皮爾森積差相關(Pearson product-moment correlation)探討射箭表現與心跳減速之相關性。研究發現與一般發展兒童相比較，發展協調障礙兒童心跳減速明顯較少、射箭表現明顯較差。除此之外，心跳減速與射箭表現有明顯正向相關，即心跳減速愈多時射箭表現愈佳，心跳減速愈少時射箭表現愈差。結論：本研究結果證實發展協調障礙兒童執行射箭任務時採用不同的注意力策略，因而造成他們的射箭表現低落。此外，發展協調障礙兒童執行射箭任務時的心理與情緒狀態可能與一般發展兒童具有差異，而心理與情緒狀態之差異也可能導致兩組兒童射箭表現有所差異。建議未來研究可進一步探討可改善發展協調障礙兒童心跳生理調控機轉之運動訓練與介入方式。

Purpose: The objective of this study was to investigate the discrepancies in heartrate deceleration and archery performance between children with developmentalcoordination disorder and typically developing children as well as the relationshipbetween heart rate deceleration and archery performance. Methods: There were 20 (10males, 10 females) children with developmental coordination disorder and 20 (10males, 10 females) typically developing children aged between 11 and 12 years. Polarheart rate monitor (RS, Polar Electro Oy, Finland) was used to collect the physiologicreaction of heart rate while performing archery task. The archery performance wasalso recorded. Independent t test was used to compare the difference in basic data,heart rate deceleration and archery performance. Pearson product-moment correlationwas used to compute the coefficient between heart rate deceleration and archeryperformance.Results: Children with DCD showed significantly less amount of heartrate deceleration (t=7.652, p<.001) and lower level of archery performance(t=6.494,p<.001) than those of typically developing children. In addition, there was asignificant positive relationship between heart rate deceleration and archeryperformance (r=0.516, p<.001), demonstrating greater amount of heart ratedeceleration with better archery performance and vice versa. Conclusion: Childrenwith developmental coordination disorder may exploit different attention strategywhich accounts for the lower level of archery performance. Besides, the mental stateand emotion state may differ between children with developmental coordinationdisorder and typically developing children, causing the difference of archeryperformance between groups. Further investigations regarding the effect of exercisetraining and intervention on the modulation of heart rate reaction is suggested.