Normal variability of postural measures: implications for the reliability of relative balance performance outcomes.
Normal variability of postural measures: implications for the reliability of relative balance performance outcomes.
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姿势测量的正常变化：对相对平衡表现结果可靠性的影响。
DOI：
10.1080/003655098444048
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
Theresa L Grant
中科院分区：
文献类型：
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作者：
Brenda Brouwer;E. Culham;R. Liston;Theresa L Grant
在70名20 - 32岁的健康受试者中评价了使用Balance Master获得的结局指标的可靠性以及前、后和外侧方向的稳定性限值。与静态摇摆和将重心转移到预设目标的能力有关的数据在一周内收集了三次。通过三次试验确定重心位置和稳定性极限，并将数据从相对参考系转换为相对于垂直方向的绝对位移。组内相关系数显示，静态和动态摇摆测量的可靠性一般或较差（系数<或= 0.55），稳定性测量极限和重心位置的可靠性极好（系数>或= 0.75）。不最大限度地挑战姿势控制系统的测试的结果测量的可变性可能是正常平衡性能的标志。此外，受试者之间的变化，在休息中心的位置和稳定性的限制，支持使用绝对性能指标的解释价值的数据表示相对于标准规范是有限的。
The reliability of outcome measures obtained using the Balance Master and the limits of stability in anterior, posterior, and lateral directions were evaluated in 70 healthy subjects aged 20 to 32 years. Data relating to static sway and the ability to shift the centre of gravity to preset targets were collected on three occasions one week apart. The centre of gravity position and limits of stability were determined over three trials and data converted from a relative reference system to absolute displacements from vertical. Intraclass correlation coefficients revealed fair to poor reliability of static and dynamic sway measures (coefficients < or = 0.55) and excellent reliability of limits of stability measures and the position of the centre of gravity (coefficients > or = 0.75). The variability in outcome measures from tests which do not maximally challenge the postural control system may be a hallmark of normal balance performance. Further, the intersubject variation in resting centre of gravity position and in limits of stability supports the use of absolute performance measures as the interpretive value of data expressed relative to standard norms is limited.