Information de reference pour ce titreAccession Number: | 00005768-199912000-00018.
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Author: | PATERSON, DONALD H.; CUNNINGHAM, DAVID A.; KOVAL, JOHN J.; ST. CROIX, CLAUDETTE M.
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Institution: | Centre for Activity and Ageing, Faculty of Health Sciences, Departments of Physiology, Epidemiology and Biostatistics, The University of Western Ontario, London, Ontario, CANADA, N6A 3K7
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Title: | Aerobic fitness in a population of independently living men and women aged 55-86 years.[Miscellaneous Article]
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Source: | Medicine & Science in Sports & Exercise. 31(12):1813, December 1999.
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Abstract: | PATERSON, D. H., D. A. CUNNINGHAM, J. J. KOVAL, and C. M. ST. CROIX. Aerobic fitness in a population of independently living men and women aged 55-86 years. Med. Sci. Sports Exerc., Vol. 31, No. 12, pp. 1813-1820, 1999.
Purpose: The purpose was to examine, for a subset of a large random survey of men and women, the age-related changes in the parameters of aerobic function, maximal oxygen consumption ( O2max), and ventilatory threshold ([spacing dot above]T E).
Methods: A "ramp-like" treadmill protocol was designed to measure O2max and [spacing dot above]T E on a total of 298 subjects (152 men and 146 women), aged 55-86 yr.
Results: Data for O2max (and HRmax) and [spacing dot above]T E by 5-yr age groups provide "normative" results. Age-related declines in O2max and [spacing dot above]T E were fit by a linear model; however, age explained at most 37% of the variance across ages 55-86 yr. In this restricted age range, the rate of decline in O2max, in both men (-0.034 L[middle dot]min-1[middle dot]yr-1) and women (-0.019 L[middle dot]min-1[middle dot]yr-1), was similar to that of previous reports for linear regression with age. Men, but not women, showed a decrease in body mass across age. Thus, the decline in O2max expressed relative to body mass was similar in men (0.31 mL[middle dot]kg-1[middle dot]min-1[middle dot]yr-1) and women (0.25); however, across this older age the decline is slower than noted for younger groups. The minimum level of aerobic power compatible with an independent life at age 85 yr was approximately 18 mL[middle dot]kg-1[middle dot]min-1 in men and 15 mL[middle dot]kg-1[middle dot]min-1 in women. Regression analysis showed HRmax across this age span is not well predicted by age. [spacing dot above]T E across age declined at about one-half the rate of the O2max, and in older age was approximately 85% of the O2max.
Conclusion: The study provides "normative" cardiorespiratory function data of a random sample of independently living men and women aged 55-86 yr.
(C) 1999 Lippincott Williams & Wilkins, Inc.
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Author Keywords: | AGING; MAXIMAL OXYGEN CONSUMPTION; VENTILATORY THRESHOLD; OLD.
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Language: | English.
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Document Type: | Epidemiology.
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Journal Subset: | Clinical Medicine.
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ISSN: | 0195-9131
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NLM Journal Code: | 8005433, mg8
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