Document Detail


Exercise testing in children: Comparison in ventilatory thresholds changes with interval-training.
MedLine Citation:
PMID:  22997163     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The aim of this investigation was, first, to examine comparatively the changes in first and second ventilatory thresholds (VT(1) and VT(2) ) and, secondly, to compare with peak oxygen uptake (${\dot {\rm {V}}}_{{\rm O}_{{\rm 2}} {\rm peak}} $) changes following high-intensity interval training (HIT) in prepubescent children. Eighteen prepubescent children (aged 10.1 ± 0.7 years) performed an incremental exhaustive exercise on a cycle ergometer with pulmonary gas exchange measurements before and after an 8-week period. During this period, nine children (five girls and four boys; initial ${\dot {\rm {V}}}_{{\rm O}_{{\rm 2}} {\rm peak}} $: 39.6 ± 6.0 ml O(2)  · min(-1)  · kg(-1) ) took part in a HIT and nine other children (three girls and six boys; initial ${\dot {\rm {V}}}_{{\rm O}_{{\rm 2}} {\rm peak}} $: 39.8 ± 7.8 ml O(2)  · min(-1)  · kg(-1) ), considered as controls, were not trained. After the training period, VT(1) , VT(2) , and ${\dot {\rm {V}}}_{{\rm O}_{{\rm 2}} {\rm peak}} $ were significantly (P < 0.01) improved (21%, 24%, and 14%, respectively) without significant changes in the control group. However, the changes in VT(1) (ΔVT1 = +4.35 ± 4.36 ml O(2)  · min(-1)  · kg(-1) ), VT(2) (ΔVT1 = +7.17 ± 5.17 ml O(2)  · min(-1)  · kg(-1) ), ${\dot {\rm {V}}}_{{\rm O}_{{\rm 2}} {\rm peak}} $ ($\Delta {\dot {\rm {V}}}_{{\rm O}_{{\rm 2}} {\rm peak}} $ = +5.51 ± 4.17 ml O(2)  · min(-1)  · kg(-1) ) induced by HIT in trained children were not related. In conclusion, for prepubescent children, in addition to VT(1) and ${\dot {\rm {V}}}_{{\rm O}_{{\rm 2}} {\rm peak}} $, VT(2) can also be significantly improved by training. Therefore, HIT represents a good way to obtain great improvement in these parameters in only 8 weeks. However, the time courses of these aerobic fitness parameters are dissociated, which implies the need to differentiate among them during aerobic fitness exercise testing. Pediatr Pulmonol. © 2012 Wiley Periodicals, Inc.
Authors:
Patrick Mucci; Georges Baquet; Cédric Nourry; Fabien Deruelle; Serge Berthoin; Claudine Fabre
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-19
Journal Detail:
Title:  Pediatric pulmonology     Volume:  -     ISSN:  1099-0496     ISO Abbreviation:  Pediatr. Pulmonol.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8510590     Medline TA:  Pediatr Pulmonol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Wiley Periodicals, Inc.
Affiliation:
Univ Lille Nord de France, Lille, France; UDSL, EA4488 Activité Physique-Muscle-Santé, Lille, France. patrick.mucci@univ-lille2.fr.
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