背景與目的：臨床常用量表和儀器評量中風後上肢動作功能恢復情況。本研究目的為比較福格邁
爾上肢次量表（ Upper Extremity Subscale of the Fugl-Meyer Motor Function Assessment, UE-FM）與三維Zebris超音波動作分析儀器測量中風病患上肢伸手取物過程運動學參數之再測信度。方法：共徵召30位慢性期中風病患，分別給予兩次上肢動作量表評估及儀器測量，前後間隔一星期。使用Zebris超音波感應式動作分析系統取得上肢伸手取物過程的運動學參數，包括最大速度（PeakVelocity, PV）、動作時間（Movement Time, MT）和標準化手部位移距離（Normalized Movement Trajectory,NMT）等參數。採用級內相關係數（Intraclass Correlation Coefficient, ICC）及最小可偵測變化值（Minimal Detectable Change, MDC） 驗證再測信度。結果：UE-FM和Zebris測量參數的再測信
度ICCs ≧ 0.89，顯示兩次評量結果一致性良好。UE-FM之MDC%為13.8% （5.5/39.8），Zebris之NMT為10.2%（7.2/70.6），PV和MT分別為22.8%（0.3/1.3）和30.7（0.4/1.3）。結論：本研究結果發現UE-FM量表評估和Zebris NMT參數值有良好的測量誤差，二種評估工具之MDC 數值可做為臨床治療師評估中風患者上肢伸手取物動作功能進步量是否超過測量誤差的參考閾值。

Background and Purpose: Clinical scales and laboratory tools to evaluate functional recovery of upper extremity (UE) in patients with stroke are common in rehabilitation clinic. This study compared the test-retest reliability of the Upper Extremity subscale of the Fugl-Meyer assessment (UE-FM) with UE reaching kinematic data from motion analysis system for stroke patients. Methods: The measures were administered to thirty chronic participants (28.8 ± 22.7months after stroke) at baseline and 7 days later. Reaching kinematic data including peak velocity (PV), movement time (MT), and normalized movement trajectory (NMT) were acquired using the ultrasound-based computerized motion analysis system. The Intraclass Correlation Coefficient (ICC) and the Minimal Detectable Change (MDC) were used to examine the test-retest reliability. Results: Test-retest agreements were excellent for the UE-FM measure, PV, MT and
NMT (ICCs ≥ 0.89). Furthermore, the MDC%s of UE-FM and NMT were 13.8% (5.5/39.8) and 10.2% (7.2/70.6), respectively, indicated smaller measurement errors than PV 22.8% (0.3/1.3)and MT 30.7% (0.4/1.3).
Conclusion: The UE-FM and NMT have high agreement between the test-retest measurements with acceptable measurement errors. The two measures can be used for clinicians to assess the UE reaching performance and monitor changes over time in stroke patients.