DANIELS, J., N. OLDRIDGE, F. NAGLE and B. WHITE. Differences and changes in V̇o2 among young runners 10 to 18 years of age. Med. Sci. Sports. Vol 10, No. 3, pp. 200-203, 1978—Twenty young males, all active in middle-distance running, were studied between January 1968 and May 1974 for the purpose of gathering longitudinal data regarding V̇o2 during treadmill running. V̇o2 submax (measured during the last 2 min of a 6-min run at 202 m/min) and V̇o2 max values (measured during a 5-8 min increasing-speed run to exhaustion) were collected approximately every 6 months for 6 years. Different groups, starting at ages of 10, 12 and 13 years were followed for periods of 2 to 5 years continuously. In all longitudinal comparisons, V̇o2 max (ml/min) changes paralleled changes in body weight; consequently, V̇o2 max (ml/kg•min-1) did not show a significant change. In every group V̇o2 submax (ml/kg•min-1) dropped significantly over time. All data were pooled by 1 yr age groups, providing cross-sectional data for active boys 10-18 yrs of age. V̇o2 max ranged from 1933 ml/min for 10-yr olds to 4082 for 18-year olds. Concurrent changes in weight resulted in no significant differences in V̇o2 max (ml/kg•min-1) from the overall mean of 61.5. V̇o2 submax (ml/kg•min-1) was highest among 10-year olds (53.3) and lowest among 18-yr olds (42.5). Based on these longitudinal and cross sectional findings and significant improvements in times for 1- and 2-mile races, it was concluded that V̇o2 max (ml/min) increases no faster than does body weight among moderately active growing boys and that both age and training contribute to a change in V̇o2 submax; a factor which accounts greatly for improvements in middle-distance race performance.
V̇o2 max, V̇o2 submax, aerobic demands of running, growth and V̇o2, growth and performance, age and V̇o2