Towards Using the Instrumented Timed Up-and-Go Test for Screening of Sensory System Performance for Balance Control in Older Adults
Towards Using the Instrumented Timed Up-and-Go Test for Screening of Sensory System Performance for Balance Control in Older Adults
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DOI：
10.3390/s19030622
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发表时间：
2019-02-01
期刊：
影响因子：
3.9
通讯作者：
Schwenk, Michael
中科院分区：
文献类型：
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作者：
Gerhardy, Thomas;Gordt, Katharina;Schwenk, Michael
背景：平衡控制的感觉系统（包括视觉、体感和前庭系统）性能下降与老年人跌倒风险增加相关。基于智能手机的定时起行 (mTUG) 版本可以通过 mTUG 子阶段筛查感觉平衡障碍。检查 mTUG 子阶段和感觉系统性能之间的关联。方法：使用经过验证的 mTUG 测量 41 名社区老年人（> 55 岁）的功能活动能力。提取了 mTUG 及其子阶段“从坐到走”、“步行”、“转身”、“转身到坐”和“坐下”的持续时间。通过在不同条件下站立（30 秒）期间经过验证的姿势描记术来量化感觉系统的性能。视觉、体感和前庭控制比 (CR) 通过姿势描记法计算并与 mTUG 亚相相关。结果：前庭 CR 与 mTUG 总时间（r = 0.54；p < 0.01）、“行走”子阶段（r = 0.56；p < 0.01）和“转身”（r = 0.43；p = 0.01）相关。体感 CR 与 mTUG 总时间（r = 0.52；p = 0.01）、“行走”子阶段（r = 0.52；p < 0.01）和“转身”（r = 0.44；p < 0.01）相关。结论：结果表明特定 mTUG 子阶段与感觉系统性能之间存在关联，支持所提出的方法。 mTUG 子阶段“行走”和“转动”可能有助于筛查感觉系统恶化。这是朝着客观、详细和快速的平衡控制评估迈出的第一步，但需要在更大规模的研究中进行验证。
Background: Decreasing performance of the sensory systems' for balance control, including the visual, somatosensory and vestibular system, is associated with increased fall risk in older adults. A smartphone-based version of the Timed Up-and-Go (mTUG) may allow screening sensory balance impairments through mTUG subphases. The association between mTUG subphases and sensory system performance is examined. Methods: Functional mobility of forty-one community-dwelling older adults (> 55 years) was measured using a validated mTUG. Duration of mTUG and its subphases 'sit-to-walk', 'walking', 'turning', 'turn-to-sit' and 'sit-down' were extracted. Sensory systems' performance was quantified by validated posturography during standing (30 s) under different conditions. Visual, somatosensory and vestibular control ratios (CR) were calculated from posturography and correlated with mTUG subphases. Results: Vestibular CR correlated with mTUG total time (r = 0.54; p < 0.01), subphases 'walking' (r = 0.56; p < 0.01), and 'turning' (r = 0.43; p = 0.01). Somatosensory CR correlated with mTUG total time (r = 0.52; p = 0.01), subphases 'walking' (r = 0.52; p < 0.01) and 'turning' (r = 0.44; p < 0.01). Conclusions: Supporting the proposed approach, results indicate an association between specific mTUG subphases and sensory system performance. mTUG subphases 'walking' and 'turning' may allow screening for sensory system deterioration. This is a first step towards an objective, detailed and expeditious balance control assessment, however needing validation in a larger study.