【論文摘要】Reliability and Validity of the Modified Figure of Eight Test in the Community-Dwelling Older Adults

【論文摘要】改良式8字形平衡功能測試應用於社區老年人之信度與效度驗證

李汯澤(Hong-Ze Li) ； 廖麗君(Lih-Jiun Liaw)

《物理治療》 44卷4期 (2019/12) Pp. 285-286

https://doi.org/10.6215/FJPT.201912.O11

摘要

Background and Purpose: To examine the relative reliability, absolute reliability and convergent validity of the modified figure of eight (MFE) test in two testing situations (natural-walk and tandem-walk) for community-dwelling older adults. Methods: A total of 52 community-dwelling older adults (9 male/43 female) participated in the study (age: 69.6 ± 3.8 years). The MFE test was administered twice, within 5–7 days. Intra-class correlation coefficient (ICC_(3,2)) was used as a relative reliability index. Absolute reliability indices, including the standard error of measurement (SEM), the minimal detectable change at the 95% confidence level (MDC_(95)), and the Bland- Altman method, were used to define the extent of measurement error. The one leg stance (OLS), timed up and go test (TUG), walking-speed test (WS), and functional gait assessment (FGA) were tested for convergent validity. Pearson's correlation coefficient (r) and Spearman's correlation coefficient (r_s) were used to determine the relationship among the MFE, OLS, TUG, WS, and FGA tests. Results: Test-retest agreements were moderate to high (ICC_(3,2): 0.73 ~ 0.93). The SEM of the MFE in natural-walk testing situation for times and oversteps were 2.34 sec and 0.42 steps, respectively; in tandem-walk testing situation for times and oversteps were 3.45 sec and 0.66 steps, respectively. The MDC_(95) of the MFE in natural-walk situation for times and oversteps were 6.48 sec and 1.16 steps, respectively; in tandem-walk testing situation for times and oversteps were 9.55 sec and 1.83 steps, respectively. The correlation coefficient between the natural/tandem walk testing situation and OLS and FGA showed a significant negative correlation (r = -0.47 ~ -0.58, p ＜ 0.05). Conclusion: The reliability and validity of the MFE in two testing situations were moderate to high for community-dwelling older adults, especially in the scoring method of oversteps. Clinical Relevance: These results indicate that the MFE are useful for clinicians and researchers for the evaluation of balance function/walking ability for community-dwelling older adults who had good physical performance.