Test-retest reliability of the closed kinetic chain upper extremity stability test: A clinical field test

Context: Functional testing of patients is essential to clinicians because it provides objective data for documentation that can be used for serial reassessment and progression through a rehabilitation program. Furthermore, new tests should require minimal time, space, and money to implement. Purpose: To determine the test-retest reliability of the Closed Kinetic Chain (CKC) Upper Extremity Stability Test. Participants: Twenty-four male college students. Methods: Each subject was tested initially and again 7 days later. Each subject per formed 1 submaximal test followed by 3 maximal efforts. A 45-second rest was given after each 15-second test. The 2 maximal-test scores were averaged and compared with those from the retest. Results:The intraclass correlation coefficient was .922 for test-retest reliability. A paired-samples t test (.927) was conducted, and the coefficient of stability was .859. The results indicate that the CKC Upper Extremity Stability Test is a reliable evaluation tool.