AGE-ASSOCIATED DIFFERENCES IN SENSORIMOTOR FUNCTION AND BALANCE IN COMMUNITY-DWELLING WOMEN
AGE-ASSOCIATED DIFFERENCES IN SENSORIMOTOR FUNCTION AND BALANCE IN COMMUNITY-DWELLING WOMEN
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DOI：
10.1093/ageing/23.6.452
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发表时间：
1994-11-01
期刊：
影响因子：
6.7
通讯作者：
WARD, JA
中科院分区：
文献类型：
--
作者：
LORD, SR;WARD, JA
在平衡和步态实验室，对550名年龄在20至99岁之间的妇女进行了视觉、前庭、感觉运动和平衡功能测试。所有的感觉，运动和平衡系统的措施表现出显着的年龄相关的差异。多元回归分析表明，下肢感觉的措施是一致的感觉运动因素，有助于在正常条件下的平衡（站在一个坚实的表面，眼睛睁开或关闭）。在更具挑战性的条件下（睁着眼睛站在泡沫上），视力，力量和反应时间发挥了重要作用，而当闭着眼睛站在泡沫上时，前庭功能也做出了重大贡献。与最佳条件下的摇摆相比，在视觉和外周感觉系统被移除或减弱的条件下，摇摆的百分比增加的分析表明，直到65岁，平衡控制对视觉的依赖性增加。超过这个年龄，视力的贡献下降，所以在最老的年龄组，视力下降是不太能够补充周边输入，导致增加摇摆区。然而，在所有年龄段，外周感觉是维持静态姿势稳定性的最重要的感觉系统。
Tests of visual, vestibular, sensori-motor and balance function were administered to 550 women, aged between 20 and 99 years at a Balance and Gait Laboratory. All of the sensory, motor and balance system measures showed significant age-associated differences. Multiple regression analyses revealed that the measures of lower limb sensation were the consistent sensori-motor factors contributing to balance under normal conditions (standing on a firm surface with eyes open or closed). Under more challenging conditions (standing on foam with eyes open) vision, strength and reaction time played significant roles, whilst when standing on foam with eyes closed, vestibular function also made a significant contribution. Analysis of percentage increases in sway under conditions where visual and peripheral sensation systems were removed or diminished, compared with sway under optimal conditions, indicated that up until age 65 there was an increased reliance on vision for balance control. Beyond this age, the contribution made by vision declined, so that in the oldest age-groups reduced vision was less able to supplement peripheral input, resulting in increased sway areas. Peripheral sensation however was the most important sensory system in the maintenance of static postural stability at all ages.