Biology of Sport
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Journal Abstract
 
Effect of the chronological age and sexual maturation on the time to exhaustion at maximal aerobic speed
FA Machado, LG Guglielmo, BS Denadai
Biol Sport 2007; 24(1):21-30
ICID: 890701
Article type: Original article
IC™ Value: 9.36
Abstract provided by Publisher
 
The purposes of this study were: a) to verify the effect of chronological age and sexual maturation on the time to exhaustion at VO2max (tlim) and; b) to examine the reproducibility of tlim in boys aged 10-15 years. Forty boys, divided into 4 groups, in accordance to the chronological age (G10-12 and G13-15) and sexual maturation (P1-P3 and P4-P5 levels for pubic hair), performed the following tests: 1) incremental test for determination of VO2max and; 2) all-out exercise bout performed at VO2max to determine the tlim. There was no difference of tlim (sec) between G10-12 and G13-15 (181.596.3 vs. 199105.5). While the two measures of tlim were moderately related (r=0.78), tlim from the second test (226.696.1 s) was higher than that of the first (191.379.2 s). We can conclude that the tlim is not influenced by chronological age and sexual maturation. Besides, tlim presents a lower reproducibility in children and adolescents.

ICID 890701
 
FULL TEXT 182 KB


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