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Age-related changes in human posture control: Motor coordination testsPostural responses to support surface displacements were measured in 214 normal human subjects ranging in age from 7 to 81 years. Motor tests measured leg muscle Electromyography (EMG) latencies, body sway, and the amplitude and timing of changes in center of pressure displacements in response to sudden forward and backward horizontal translations of the support surface upon which the subjects stood. There were small increases in both EMG latencies and the time to reach the peak amplitude of center of pressure responses with increasing age. The amplitude of center of pressure responses showed little change with age if the amplitude measures were normalized by a factor related to subject height. In general, postural responses to sudden translations showed minimal changes with age, and all age related trends which were identified were small relative to the variability within the population.
Document ID
19900002862
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Peterka, R. J. (Good Samaritan Hospital and Medical Center Portland, OR, United States)
Black, F. O. (Good Samaritan Hospital and Medical Center Portland, OR, United States)
Date Acquired
September 6, 2013
Publication Date
January 1, 1989
Subject Category
Man/System Technology And Life Support
Report/Patent Number
NASA-CR-185855
NAS 1.26:185855
Accession Number
90N12178
Funding Number(s)
CONTRACT_GRANT: NAG9-117
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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