Titlebook: Sensorimotor Impairment in the Elderly; George E. Stelmach,Volker Hömberg Book 1993 Springer Science+Business Media Dordrecht 1993 Parkins

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Postural Control in Normal Subjects and Older Women Who Have Fallened by an oscilloscope. The surface on which subjects stood was either fixed, or rotated to minimise ankle rotation cues, giving six test conditions in all. 97 male and female control subjects aged from 20 onwards were tested, sway amplitude tended to increase with age, and 19 subjects lost balance w

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Postural Responses of the Elderly: Comparisons with Vestibular-Deficit Subjectsing surface EMG records from the soleus, tibialis anterior, and neck extensor muscles, and measurements of ankle torque. Three fundamental differences were observed. First, EMG response latencies were significantly longer in the elderly. Second, the ankle torque exerted on the support surface by the

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What is the Cause of the Ageing Atrophy? Assessment of the Fiber Type Composition in Whole Human Musfiber type grouping, indicating a loss of motor neurons in the spinal cord and a reduction in the number of functioning motor units. These findings suggest a combination of a progressive denervation process and an altered physical activity level as the two major mechanisms underlying the effects of normal ageing on the human muscle.

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Postural Control in Normal Subjects and Older Women Who Have Fallenoception and eyes closed, and swayed more under the other conditions with reduced proprioception. Interpretation of this result is not straightforward, and a larger prospective study is required to confirm the possibihty that people who report falls may be divided into two distinct groups.