背景與目的：眼－手或眼－腳之間的動作協調性(coordinalion)，在一般人的日常行為中扮演著極重要的角色。相對於有動作障礙者如帕金森氏症，因協調性能力降低，故須接受訓練強化其協調性，臨床上多採以手點鼻測試，作為其協調性評估患者的標準。目前由於測試過程多採人工計數方式進行，較受主客觀的條件限制，故本研究設計一套自動測試裝置，供臨床施測者使用。本實驗使用新發展的自動上殷勤作協調性測量系統，透過信度及建構效度分析等方式，評估其適用性。方法：利用新式儀器進行資料收集，以年齡19歲到21歲健康的年輕男女性共9名為對照組，平均年齡20.0歲（±0.5歲）；以及18位帕金森氏症患者為實驗組，年齡介於44至88歲，平均年齡68.2歲（±12.4歲）。施測時，每位受測者的手臂長度不一的考量，所有受測者必須在肩關節彎曲90度的情況下，先調整兩側感應器間的距離調整，達到擺動弧度皆為固定值。每次測試以五秒鐘作為計時單位，進行時手臂不能彎曲，用快速擺動，並記錄擺動次數。受測者進行「手點鼻」和「自動上肢動作協調性測量系統」的測試中，用以確定兩者的相關程度，並同時評估新儀器的建構效度。健康年輕受測者，分別於第一天、第二天及一星期，總共三個時間點，各再進行次測試可以籍由比較不同測試中，其次數間的重複性，來評估該儀器的信度。結果：健康受測者表現在此自動化上肢動作協調性測量儀器的測試結果是具有高重複性，第一次／第二次運用組內相關係數為0.721，第二次／第三次組內相關係數為0.929。此外在「自動上肢動作協調性測量系統」運用具「手點鼻」測試中，兩者於三次測試也是具有高相關性（r=-0.866、-0.723及－0.775）。根據實驗數據結果進行統計分析，也證明該儀器具有建構效度（收斂效度與區別效度）。結論：本實驗研究發現運用自動上肢動作協調性測量系統測試，可以明顯區分健康受測者與帕金森氏症患者表現的差異。此新發展儀器應用在健康受測者與帕金森氏症患者，不僅與手點鼻測試方法有明顯相關性結果，同時顯示健康受測者而言，在不同天測試結果是有高重復性。臨床意羲：該儀器運用於臨床，藉此得知患者上肢協調性障礙程度；同時也適合應用於患者經過復健訓練後，治療成效的評估。

Background and Purpose: In daily life, coordination is essential for movement performance such as eyes-hands or eyes-foot. People suffering from movement disorders, such as the client with Parkinson's disease (PD), may have decreased arm coordination. The finger-to-nose test is widely used to assess patient's coordination in a clinically setting. To date, clinicians often estimated the coordination through subjective artificial counting side which received the Subjective and objective condition limit. Therefore, the purposed of this study was to design an objective automatic coordination measurement system for the upper extremity. In addition, we examine the reliability and construct validity of coordination assessment using this novel system. Methods: Nine healthy volunteers (control group), aged from 19 to 21 years old with mean age 20.0±0.5 years; and 18 subjects with PD (experiment group), aged from 44 to 88 years old with mean age is 68.2±12.4 years, were recruited in this study. All subjects swayed the arm above the sensors with shoulder flexion 90 degrees and arms straight. as fast as they could in 5 seconds. To achieve different arms length with a constant swing arc for each subject, the distance between two sensors was adjusted before conducting the test. The number of times the arm blocked the bilateral sensors was counted and recorded. The correlation coefficient (r-value) between finger-to-nose and arm sway test was used to determine the construct validity of this new measurement system. Healthy subjects performed the test across three separate days (1 st. 2nd and 7th day) and calculated to determine the reliability of using this automatic coordination measurement system. Results: For healthy subjects, we found that the reliability of arm sway test using this coordination measurement system was high between the first/second and the second/third test with Intra-class correlation coefficient (ICC) equaled to 0.721 and 0.929, respectively, For normal subjects and clients with PD. the Pearson correlation coefficient (r-value) between arm sway and finger-to-nose test was -0.866、0.723, and -0.775, respectively, Furthermore, statistical analysis showed this coordination measurement system has good construct validity both in convergence and discrimination. Conclusion: The results demonstrated that using the automatic coordination measurement system for upper limbs may clearly distinguish differences between healthy individuals and people with PD. The correlation between the arm sway and finger-to-nose test both for healthy young subjects and PD clients is high. In addition, the repeatability of arm sway test in different days is high for healthy subjects. Clinical Relevance: This novel coordination measurement system may be applicable as a tool for coordination and outcome measures in the rehabilitation.