Changes in aerobic power of men, ages 25???70 yr

Authors:
  • EBEarl F. Beard
    Earl F. Beard
  • LWLarry T. Wier
    Larry T. Wier
  • RRRobert M. Ross
    Robert M. Ross
  • JSJoseph E. Stuteville
    Joseph E. Stuteville
  • SBSteven N. Blair
    Steven N. Blair
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Abstract
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 V̇O2peak 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 V̇O2peak 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. ©1995The American College of Sports Medicine...