Effects of Exercise Mode on the Oxygen Uptake Kinetic Response to Severe-Intensity Exercise in Prepubertal Children
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Data
2009-05-01
Autores
Machado, Fabiana A. [UNESP]
Guglielmo, Luiz G. A. [UNESP]
Greco, Camila C. [UNESP]
Denadai, Benedito S. [UNESP]
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Human Kinetics Publ Inc
Resumo
The objective of this study was to verify the effect of the exercise mode on slow component of VO(2) (VO(2)SC) in children aged 11-12 years during severe-intensity exercise. After determination of the lactate threshold (LT) and peak VO(2) (VO(2)peak) in both cycling (CE) and running exercise (TR), fourteen active boys completed a series of "square-wave" transitions of 6-min duration at 75%Delta [75%Delta = LT + 0.75 X (VO(2)peak-LT)l to determine the VO(2) kinetics. The VO(2)SC was significantly higher in CE (180.5 +/- 155.8 ml . min(-1)) than in TR (113.0 +/- 84.2 ml . min(-1)). We can conclude that, although a VO(2)SC does indeed develop during TR in children, its magnitude is considerably lower than in CE during severe-intensity exercise.
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Pediatric Exercise Science. Champaign: Human Kinetics Publ Inc, v. 21, n. 2, p. 159-170, 2009.