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Proprioception and Stability: Foot Position Awareness as a Function of Age and Footwear

机译:本体感受和稳定性:脚位意识与年龄和鞋类的关系

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We examined the hypothesis that awareness of foot position in terms of the slope of the weight-bearing surface declines with age. We further postulated that the decline would be due to a change in plantar tactile sensibility, and that footwear would further impair position judgements. We compared 15 men aged over 65 years (mean age 73) with 36 men aged under 40 (mean age 30) in terms of estimates of amplitude and direction of surface slopes. We employed a ratio scale of 0-10 representing actual slopes of 0°-25° in increments of 2.5°. In order to examine whether subjects overestimated high angles they were told that the scale ranged from 0 to 15. We found significant differences between the two groups in terms of estimates and the effect of footwear. Psychophysical functions for estimate of slope were 0.95 for the young when barefoot and 0.71 when shod compared with 0.80 and 0.81 respectively for the older men. We conclude that sensitivity to foot position declines with age, mainly owing to loss of plantar tactile sensitivity. Footwear impairs foot position awareness in both young and old. Loss of foot position awareness may contribute to the frequency of falls in later life.
机译:我们检验了以下假设:根据承重表面的坡度,对脚位置的意识会随着年龄的增长而下降。我们进一步假设下降的原因是足底触觉敏感性的改变,而鞋类将进一步损害位置判断。我们将15岁以上65岁以上(平均73岁)的男性与36岁以下40岁以下(平均30岁)的男性进行了比较,以估计表面坡度的幅度和方向。我们采用的比例尺为0-10,代表0°-25°的实际坡度,以2.5°为增量。为了检查受试者是否高估了大角度,他们被告知比例在0到15之间。我们发现两组之间在估计和鞋类效果方面存在显着差异。赤脚年轻人的心理生理功能估计为0.95,穿鞋时年轻人的斜率为0.71,而老年人则为0.80和0.81。我们得出的结论是,对脚部位置的敏感性会随着年龄的增长而下降,这主要是由于脚底触觉敏感性的丧失。鞋类会损害年轻人和老年人的脚位意识。失去脚部位置意识可能会导致以后生活中摔倒的频率。

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