The effects of conditioning on cardiorespiratory function in adolescent boys

The Journal of Sports Medicine
G B Shasby, F C Hagerman

Abstract

Pulse rate and oxygen consumption were measured for 19 boys (agen 12-13) assigned to either Distance, Interval, or No-Training regimens, during a 5 min. run at 6 m.p.h., zero % grade on a motor driven treadmill prior to a 12 week conditioning period, following conditioning, and after four months of deconditioning. Oxygen consumption was assessed by opencircuitry and heart rate monitored by direct electrocardiography. Both conditioning groups significantly improved cardiovascular fitness (Distance group: 175-152 beats/min. and Interval group: 175-159 beats/min.) at P less than .01, but no differences were noted between them. They differed significantly from the Control group (P less than .05) which showed no change (172-173 beats/min.). No significant differences occurred between any of the groups for Vo2 variables, but Within group analysis statistically favored the Distance group. Post-conditioning and -deconditioning comparisoms indicated taht deconditioning had a deleterious effect on cardiorespiratory function. Cardiorespiratory fitness improved to the extent that competitive running events of 2-6 miles are suggested for this age group, but as the data indicated, only after sufficient training. Task similarity of training a...Continue Reading

References

Sep 1, 1971·Journal of Applied Physiology·V Klissouras
Jan 1, 1971·Medicine and Science in Sports·J Daniels, N Oldridge
Sep 1, 1969·Journal of Applied Physiology·B Ekblom
Nov 1, 1956·Journal of Applied Physiology·C B MCKERROW, A B OTIS
Apr 1, 1949·Journal of Applied Physiology·M MORSED E CASSELS

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Citations

Mar 1, 1994·The Proceedings of the Nutrition Society·M B Livingstone
Sep 1, 1993·Research Quarterly for Exercise and Sport·V G Payne, J R Morrow

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