Journal of bodywork and movement therapies · 2025
Evaluating the test-retest reliability of knee extensor muscle strength measurement in older adults with nintendo wii balance board: A comparison of single, maximum, and averaged trials.
СтатьяСравнительное исследованиеПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод пока не подготовлен
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Sangkarit Noppharath, Tapanya Weerasak, Poncumhak Puttipong, Amput Patchareeya, Konsanit Saisunee
Аннотация
BACKGROUND: Accurate assessment of lower limb muscle strength is essential for fall risk screening and rehabilitation in older adults. The Nintendo Wii Balance Board (NWBB), a portable and low-cost tool, has potential in clinical assessment, yet its reliability for knee extensor strength remains underexplored.
OBJECTIVE: To evaluate the test-retest reliability of the NWBB in measuring knee extensor strength using single, maximum, and averaged trial strategies in older adults.
METHODS: Thirty older adults (n = 30; 15 males and 15 females; mean age 65.2 ± 4.1 years) completed two NWBB assessments, one week apart. Each session involved three maximal isometric contractions of the knee extensors. Reliability indices were calculated using ICC3,1, standard error of measurement (SEM), and minimum detectable change (MDC95) across three trial strategies: single trial, maximum of three trials, and average of three trials. Bland-Altman plots evaluated agreement.
RESULTS: No significant differences were observed between test days (p > 0.05), confirming temporal stability. Single trials showed moderate reliability (ICC3,1 = 0.786-0.823) and high MDC95 % (>25 %). Averaged trials showed the highest reliability (ICC3,1 = 0.984), lowest SEM (3.21 kg), and MDC95 % (7.11 %). Subgroup analysis showed excellent reliability across genders, with MDC95 % as low as 2.67 % in females.
CONCLUSION: NWBB provides excellent reliability when using averaged trials, supporting its use in assessing knee extensor strength in older adults. Averaging trials enhances sensitivity and reduces error, making it suitable for clinical and research use.
OBJECTIVE: To evaluate the test-retest reliability of the NWBB in measuring knee extensor strength using single, maximum, and averaged trial strategies in older adults.
METHODS: Thirty older adults (n = 30; 15 males and 15 females; mean age 65.2 ± 4.1 years) completed two NWBB assessments, one week apart. Each session involved three maximal isometric contractions of the knee extensors. Reliability indices were calculated using ICC3,1, standard error of measurement (SEM), and minimum detectable change (MDC95) across three trial strategies: single trial, maximum of three trials, and average of three trials. Bland-Altman plots evaluated agreement.
RESULTS: No significant differences were observed between test days (p > 0.05), confirming temporal stability. Single trials showed moderate reliability (ICC3,1 = 0.786-0.823) and high MDC95 % (>25 %). Averaged trials showed the highest reliability (ICC3,1 = 0.984), lowest SEM (3.21 kg), and MDC95 % (7.11 %). Subgroup analysis showed excellent reliability across genders, with MDC95 % as low as 2.67 % in females.
CONCLUSION: NWBB provides excellent reliability when using averaged trials, supporting its use in assessing knee extensor strength in older adults. Averaging trials enhances sensitivity and reduces error, making it suitable for clinical and research use.