Gait, gait variability and the risk of multiple incident falls in older people: a population-based study
Gait, gait variability and the risk of multiple incident falls in older people: a population-based study
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DOI：
10.1093/ageing/afr055
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发表时间：
2011-07-01
期刊：
影响因子：
6.7
通讯作者：
Srikanth, Velandai K.
中科院分区：
文献类型：
--
作者：
Callisaya, Michele L.;Blizzard, Leigh;Srikanth, Velandai K.
方法：从塔斯马尼亚州选民名册中随机选择60-86岁的个体（n = 412）。在计算机化的走道上收集平均步态和步态变异性测量值。前瞻性记录12个月内的福尔斯。对数多项式回归用于估计与步态测量相关的单次和多次福尔斯跌倒的相对风险。协变量包括年龄，性别，感觉运动和认知措施，情绪和medications.Results：在这项以人群为基础的研究中，更大的步长和双支撑阶段的个体内变异性与多个福尔斯的风险增加呈线性相关（P = 0.04）。步态速度P = 0.002、步频P = 0.004和步频时间变异性P = 0.03与多次福尔斯跌倒之间存在非线性关联。没有一项步态测量预测单次福尔斯跌倒的风险。结论：在步态较差的老年人中，多次福尔斯跌倒的风险增加，但单次福尔斯跌倒的风险没有增加。步态和步态变异性的具体措施似乎赋予这种风险，并可能适合于旨在减少老年人多次福尔斯跌倒风险的干预措施。
Methods: individuals aged 60-86 years (n = 412) were randomly selected from the Tasmanian electoral roll. Average gait and gait variability measures were collected on a computerised walkway. Falls were recorded prospectively over 12 months. Log multinomial regression was used to estimate the relative risk of single and multiple falls associated with gait measures. Covariates included age, sex, sensorimotor and cognitive measures, mood and medications.Results: in this population-based study greater intra-individual variability in step length and double-support phase were linearly associated with increased risk of multiple falls (P = 0.04). Non-linear associations with multiple falls were found for gait speed P = 0.002, cadence P = 0.004 and step time variability P = 0.03. None of the gait measures predicted risk of single falls.Conclusion: there is an increased risk of multiple falls, but not single falls, in older people with poorer gait. Specific measures of gait and gait variability seem to confer this risk and may be amenable to interventions designed to reduce the risk of multiple falls in older people.