Influence of visual control, conduction, and central integration on static and dynamic balance in healthy older adults.
Influence of visual control, conduction, and central integration on static and dynamic balance in healthy older adults.
复制标题
视觉控制、传导和中枢整合对健康老年人静态和动态平衡的影响。
作者：
P. Perrin;C. Jeandel;Claude Perrin;M. Béné
衰老与平衡能力下降有关，导致跌倒的风险增加。为了了解平衡控制中涉及的视觉、体感和中枢信号，开发了复杂的姿势描记评估方法，使用静态和动态测试，最终与肌电图测量相关。我们将这些方法应用于健康的老年人群，以了解这些感官输入对老年人的各自重要性。在力测量平台上记录了 41 名健康年轻人（年龄 28.5 +/- 5.9 岁）和 50 名老年人（年龄 69.8 +/- 5.9 岁）成年人的姿势控制参数，使用静态测试和两次动态测试，所有个体首先睁眼，然后闭眼。无论睁眼还是闭眼，老年人的足部压力中心覆盖的距离、摇摆面积和前后摆动均显着高于年轻受试者。在动态测试中，老年人组的反应潜伏期较长，发现了显着差异。当两组人睁眼时，正弦曲线测试中的动态记录具有更规则的模式，并且证明老年人的不稳定性明显更大。这些数据表明，视觉对于维持姿势控制仍然很重要，而随着年龄的增长，传导和中枢整合的效率会降低。
Aging is associated with decreased balance abilities, resulting in an increased risk of fall. In order to appreciate the visual, somatosensory, and central signals involved in balance control, sophisticated methods of posturography assessment have been developed, using static and dynamic tests, eventually associated with electromyographic measurements. We applied such methods to a population of healthy older adults in order to appreciate the respective importance of each of these sensorial inputs in aging individuals. Posture control parameters were recorded on a force-measuring platform in 41 healthy young (age 28.5 +/- 5.9 years) and 50 older (age 69.8 +/- 5.9 years) adults, using a static test and two dynamic tests performed by all individuals first with eyes open, then with eyes closed. The distance covered by the center of foot pressure, sway area, and anteroposterior oscillations were significantly higher, with eyes open or closed, in older people than in young subjects. Significant differences were noted in dynamic tests with longer latency responses in the group of old people. Dynamic recordings in a sinusoidal test had a more regular pattern when performed eyes open in both groups and evidenced significantly greater instability in old people. These data suggest that vision remains important in maintaining postural control while conduction and central integration become less efficient with age.