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Human Cardiovascular Research Laboratory, Center for Physical Activity, Disease Prevention, and Aging, Department of Kinesiology and Applied Physiology, University of Colorado at Boulder, Boulder, Colorado 80309
Based on cross-sectional data, we
recently reported that, in contrast to the prevailing view, the rate of
decline in maximal oxygen consumption
(
O2 max) with age is
greater in physically active compared with sedentary healthy women. We
tested this hypothesis in men using a meta-analytic study of
O2 max values in the
published literature. A total of 242 studies (538 subject groups and
13,828 subjects) met the inclusion criteria and were arbitrarily
separated into sedentary (214 groups, 6,231 subjects), active (159 groups, 5,621 subjects), and endurance-trained (165 groups, 1,976 subjects) populations. Body fat percent increased with age in sedentary and active men (P < 0.001), whereas
no change was observed in endurance-trained men.
O2 max was inversely
and strongly related to age within each population
(r =
0.80 to
0.88, all
P < 0.001) and was highest in
endurance-trained and lowest in sedentary populations at any age.
Absolute rates of decline in
O2 max with age were not different (P > 0.05) in
sedentary (
4.0
ml · kg
1 · min
1 · decade
1),
active (
4.0), and endurance-trained (
4.6) populations.
Similarly, there were no group differences
(P > 0.05) in the relative (%) rates of decline in
O2 max with
advancing age (
8.7,
7.3, and
6.8%/decade,
respectively). Maximal heart rate was inversely related to age within
each population (r =
0.88 to
0.93, all P < 0.001), but the
rate of age-related reduction was not different among the populations.
There was a significant decline in running mileage and speed with
advancing age in the endurance-trained men. The present cross-sectional
meta-analytic findings do not support the hypothesis that the rate of
decline in
O2 max with age is related to habitual aerobic exercise status in men.
aging; exercise
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