NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Changes in aerobic power of men, ages 25-70 yrThis study quantified and compared the cross-sectional and longitudinal influence of age, self-report physical activity (SR-PA), and body composition (%fat) on the decline of maximal aerobic power (VO2peak). The cross-sectional sample consisted of 1,499 healthy men ages 25-70 yr. The 156 men of the longitudinal sample were from the same population and examined twice, the mean time between tests was 4.1 (+/- 1.2) yr. Peak oxygen uptake was determined by indirect calorimetry during a maximal treadmill exercise test. The zero-order correlations between VO2peak and %fat (r = -0.62) and SR-PA (r = 0.58) were significantly (P < 0.05) higher that the age correlation (r = -0.45). Linear regression defined the cross-sectional age-related decline in VO2peak at 0.46 ml.kg-1.min-1.yr-1. Multiple regression analysis (R = 0.79) showed that nearly 50% of this cross-sectional decline was due to %fat and SR-PA, adding these lifestyle variables to the multiple regression model reduced the age regression weight to -0.26 ml.kg-1.min-1.yr-1. Statistically controlling for time differences between tests, general linear models analysis showed that longitudinal changes in aerobic power were due to independent changes in %fat and SR-PA, confirming the cross-sectional results.
Document ID
20040187257
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Jackson, A. S.
(NASA Johnson Space Center Houston, TX United States)
Beard, E. F.
Wier, L. T.
Ross, R. M.
Stuteville, J. E.
Blair, S. N.
Date Acquired
August 22, 2013
Publication Date
January 1, 1995
Publication Information
Publication: Medicine and science in sports and exercise
Volume: 27
Issue: 1
ISSN: 0195-9131
Subject Category
Life Sciences (General)
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available