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The emergence of age-related deterioration in dynamic, but not quiet standing balance abilities among healthy middle-aged adults.
Experimental Gerontology ( IF 3.9 ) Pub Date : 2020-08-27 , DOI: 10.1016/j.exger.2020.111076
Mathew William Hill 1 , Michael Joseph Duncan 1 , Michael James Price 1
Affiliation  

The purpose of the present study was to quantify differences in lower extremity reach performance, static posturography and gait outcomes between young (20–39 years), middle-aged (40–59 years) and older (60–79 years) adults using identical tests and parameters. This was a cross-sectional study with three parallel groups (young [20–39 years] vs. intermediate [40–59 years] vs. older [60–79 years] adults). In a randomised order each participant completed: (i) static posturography, (ii) lower extremity reach performance, and (iii) gait assessment. Changes in balance between age groups were analysed using analysis of variance (ANOVA). Additionally, correlational analysis was used to identify relationships between age and outcome measures. Centre of pressure (COP) movement was greater in older compared to intermediate-aged (d = 0.50–2.40) and young (d = 0.54–2.61) adults (p < 0.001). Reduced lower extremity reach distance was found in older compared to intermediate-aged (d = 1.28–3.60) and young (d = 2.09–3.87) adults (p < 0.001), while young adults demonstrated greater reach distances than intermediate (d = 0.64–1.74) aged adults (p < 0.001). Correlational analysis revealed moderate to strong positive correlations between age across the adult life span (20–79 years) for all COP metrics and lower extremity reach outcomes. When correlational analyses were performed only in the young and middle-aged groups (20–59 years), coefficients were weak and not significant for the COP, but remained moderate for lower extremity reach performance. Lower extremity reach performance reveals earlier age-related declines in postural stability that are not evident during quiet standing tasks of varying difficulty. These findings should contribute to the early identification of potential balance deficits in those where balance problems do not yet exist, which will assist clinical decision making with respect to timely implementation of fall prevention strategies.



中文翻译:

在健康的中年成年人中出现了与年龄有关的动态能力下降,但静坐平衡能力下降的现象。

本研究的目的是使用相同的方法量化年轻(20-39岁),中年(40-59岁)和老年人(60-79岁)成年人的下肢触及能力,静态姿势和步态结局的差异。测试和参数。这是一个横断面研究,分为三个平行组(年轻人[20-39岁],中级[40-59岁]和老年人[60-79岁])。每个参与者以随机顺序完成:(i)静态姿势描记术;(ii)下肢伸直表现;以及(iii)步态评估。使用方差分析(ANOVA)分析年龄组之间的平衡变化。另外,使用相关分析来识别年龄和结果指标之间的关系。老年人的压力中心(COP)运动要比中年(d = 0.50–2.40)和年轻人(d  = 0.54–2.61)成人(p  <0.001)。与中年(d  = 1.28–3.60)和年轻人(d  = 2.09–3.87)成年人相比(p  <0.001),老年人的下肢到达距离减小了,而年轻人则比中年(d  = 0.64)大。 –1.74)成年人(p <0.001)。相关分析显示,所有COP指标的成人寿命(20-79岁)中的年龄与下肢伸直结果之间的中度至强正相关。当仅在年轻人和中年组(20-59岁)中进行相关分析时,系数对于COP较弱且不显着,但对于下肢伸直表现仍保持中等水平。下肢伸手可及性表现出与年龄相关的姿势稳定性较早下降,这在各种难度的安静站立任务中并不明显。这些发现应有助于及早发现尚不存在平衡问题的人的潜在平衡缺陷,这将有助于就及时实施防坠落策略进行临床决策。

更新日期:2020-09-02
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