High-Intensity Training Increases Spontaneous Physical Activity in Children: A Randomized Controlled Study - 07/03/14
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, Udo Meinhardt, MD a, , Renato Petrò a, Fabienne Witassek a, Felix Gutzwiller, MD b, Theo Gasser, MD bReprint requests: Prof Urs Eiholzer, MD, Center for Pediatric Endocrinology Zurich, Mohrlistrasse 69, CH-8006 Zurich, Switzerland.Abstract |
Objective |
To test the hypothesis that resistance training may increase spontaneous physical activity in children.
Study design |
Two junior ice hockey teams were randomly assigned to unchanged training schedules (team ZSC, 21 boys; mean age, 13.2 years) or to participate twice weekly in guided resistance training for 4 months (team GCK, 25 boys; mean age, 13.4 years). Spontaneous physical activity energy expenditure (SpAEE; 3-axial accelerometry for 7 days), muscle strength, and body composition (dual energy x-ray absorptiometry) were measured at 0, 4, and 12 months.
Results |
Baseline measures did not differ in the groups, except for higher leg and trunk strength in team ZSC. In the intervention group compared with the control group, SpAEE significantly (P ≤ .02) increased at 4 months (+25.5% versus 0%) and 12 months (+13.5% versus –9.5%). Leg and arm strength increased because of training intervention; all other variables were unchanged. None of these variables correlated with changes in SpAEE.
Conclusion |
In boys who play ice hockey, spontaneous physical activity is inducible with resistance training; this effect seems to be independent of changes in body composition and strength. If this was confirmed in unselected children, resistance training might be a new strategy for childhood obesity prevention programs.
Le texte complet de cet article est disponible en PDF.Mots-clés : CV, FM, LBM, PWS, SpAEE, TrAEE
Plan
| Funding support was provided by the Swiss National Foundation (3200B0-116819). The sponsor had no role in performing this analysis or the decision to proceed to publication; representatives of the sponsor did participate in the study design. The authors declare no conflicts of interest. |
Vol 156 - N° 2
P. 242-246 - février 2010 Retour au numéro
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