Changes of locomotion in old age depend on task setting
Changes of locomotion in old age depend on task setting
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DOI：
10.1016/j.gaitpost.2010.09.009
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发表时间：
2010-10-01
期刊：
影响因子：
2.4
通讯作者：
Beurskens, Rainer
中科院分区：
文献类型：
--
作者：
Bock, Otmar;Beurskens, Rainer
背景实验室环境在注意力、动机、意图和自我效能感等因素上可能与日常生活有所不同，由于这些因素可能会影响受试者在运动任务中的表现，我们评估了以前在实验室条件下观察到的与年龄相关的运动变化是否同样存在于真实生活情景中。方法在实验室环境中，15名青年和15名老年受试者沿着一条标有25m长、03m宽的标记路径行走在社区公园中，14名年轻人和13名老年受试者沿着一条3公里的小路步行，直线和水平登记区段位于1.5公里之后。结果步长更长，角度肢体偏移更小，步幅更小实验室中的时空步态变异性高于公园中的时空步态变异性。协方差分析表明，这些变化不能追溯到单一原因。在实验室条件下，步长和肢体偏移的变异性在老年时增加，但在真实逼真的条件下，只有后一个参数增加。讨论我们的实验室环境比我们真实的生活环境更不稳定步态模式，因此加剧了与年龄相关的变化(C)2010 Elsevier B V版权所有
Background Laboratory settings may differ from everyday life with respect to factors such as attention motivation intention and self-efficacy Since those factors are likely to influence subjects performance on locomotor tasks we evaluated whether the age-related changes of locomotion previously observed under laboratory conditions are equally present in a real life-like scenarioMethods 15 young and 15 older subjects walked along a marked path of 25 m length and 03 m width in a laboratory environment 14 young and 13 older subjects walked in a community park along a 3 km path with a straight and level registration section located after 1 5 kmResults Step duration was longer angular limb excursion was smaller and the spatio-temporal gait variability was higher in the laboratory than in the park Analysis of co-variance revealed that these changes cannot be traced back to a single cause The variability of step duration and of limb excursion increased in old age under laboratory conditions but only the latter parameter increased under real lifelike conditionsDiscussion Our laboratory setting destabilized the gait pattern more than our real life-like setting thus accentuating age-related changes (C) 2010 Elsevier B V All rights reserved