This study analyzed the test-retest reliability of the sideways step test (SST) and evaluated its measurement error (SEM, MDC, MDC%) and concurrent validity as an assessment tool for subacute stroke patients. A cross-sectional study with 28 participants assessed SST reliability using the intraclass correlation coefficient (ICC 3,1), while measurement error was determined through SEM, MDC, and MDC(%) and validated via Bland-Altman scatter plots. Convergnet validity was examined by correlating SST step counts with the Fugl-Meyer Assessment for lower extremities (FMA-L/E), 10meter Walk Test (10 mWT), Berg balance scale (BBS), and timed up & go test (TUG) using Spearman’s correlation coefficient. SST showed high test-retest reliability for both paretic (ICC= .88, 95% CI: .76∼.94) and non-paretic sides (ICC= .86, 95% CI: .73∼.93). SEM values (paretic: .70, non-paretic: .66) were <20% of their means, and MDC values (1.94 and 1.82 steps) remained below 20% of the maximum attainable counts. No systematic error was found (p= .375 paretic, p= .119 non-paretic), but step counts significantly differed between paretic and non-paretic sides (p<.01). SST step counts correlated significantly with FMA-L/E, 10m WT, BBS, and TUG (paretic: r=.41∼.57; non-paretic: r=.45∼.59), confirming relationships with motor control, gait velocity, functional mobility, and balance. These findings indicate that SST is a reliable and valid tool for assessing dynamic balance in stroke patients.
목차
Abstract Ⅰ. 서론 Ⅱ. 연구방법 1. 연구 대상 2. 연구 절차 3. 측정 도구 및 평가 방법 4. 자료 분석 Ⅲ. 결과 1. 연구 대상자의 일반의학적인 특성 2. 측면 스텝 검사의 마비측과 비마비측 수행횟수에 대한 검사-재검사 신뢰도와 측정오차지표 3. 측면 스텝 검사 횟수와 퓨글-마이어 하지운동기능 평가, 10미터 보행 검사, 버그 균형 척도 및 일어나 걸어가기 검사와의 상관관계 Ⅳ. 논의 Ⅴ. 결론 인용문헌