United States Department of Transportation
i
Experimental evaluation of work capacity as related to chronological and physiological aging.
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1963-09-01
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By Blake, Bruno
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Abstract:Research statistics has establish the fact that physical work capacity declines as a consequence of aging. The question has been raised, however, if this decline is the inevitable result of senescence or merely due to change in living habits. Great numbers of people have been observed no to comply with the statistics. One is inclined to explain such exceptions form the rule on the basis of extraordinary biological characteristics, but the real reason might be a more adequate balance of essential factors in daily life such as work, rest, tension, play, nutrition, physical activity, and others.
A maximum performance capacity is only developed and maintained through hard training, the preservation of an acceptable level of work capacity requires frequent exposures to sufficiently high functional demands. Within this concept, two situations under experimental scrutiny are of interest: first, physiological parameters, indicative for physical performance capacity, were intra-individually measured over the years whereby changes in work capacity became apparent as consequence of training, environment, inactivity, disease and retraining.
The latter restored the functional adaptability at age 56 nearly to that observed at age 20-30. In the second situation, an individual (age 53) with essential hypertension, a disease considered to be associated with aging processes of the vascular tissue, has been studied over months with results encouraging the application of an individually devised program of regular activities for the mitigation of such disease.
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