http://www.cnr.it/ontology/cnr/individuo/prodotto/ID10503
Effects of low- and high-intensity exercise training on body composition and substrate metabolism in obese adolescents (Articolo in rivista)
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- Effects of low- and high-intensity exercise training on body composition and substrate metabolism in obese adolescents (Articolo in rivista) (literal)
- Anno
- 2011-01-01T00:00:00+01:00 (literal)
- Alternative label
Lazzer S. 1,2, Lafortuna C. 3, Busti C. 1, Galli R. 1, Agosti F. 1, Sartorio A..1,4 (2011)
Effects of low- and high-intensity exercise training on body composition and substrate metabolism in obese adolescents
in Journal of endocrinological investigation (Testo stamp.)
(literal)
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- Lazzer S. 1,2, Lafortuna C. 3, Busti C. 1, Galli R. 1, Agosti F. 1, Sartorio A..1,4 (literal)
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- Pubblicato on-line: 31 Agosto 2010.
Corresponding author: A. Sartorio (sartorio@auxologico.it
IF 2009: 1.476 (literal)
- Note
- ISI Web of Science (WOS) (literal)
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- 1. Istituto Auxologico Italiano, IRCCS, Laboratorio Sperimentale di Ricerche Auxo-Endocrinologiche, Milano.
2. Dipartimento di Scienze e Tecnologie Biomediche, Università degli Studi di Udine.
3. Istituto di Bioimmagini e Fisiologia Molecolare del Consiglio Nazionale delle Ricerche, Segrate (MI).
4. Istituto Auxologico Italiano, IRCCS, Divisione di Auxologia, Verbania. (literal)
- Titolo
- Effects of low- and high-intensity exercise training on body composition and substrate metabolism in obese adolescents (literal)
- Abstract
- The objective was to investigate the effects of a 3-week weight-management program including moderate energy restriction and exercise training at two intensities (LI:40% and HI:70% V'O2max) on body composition, energy expenditure and fat oxidation rate in severely obese adolescents. Twenty obese adolescents, aged 15-17 years (BMI: 37.5 kg/m2 ; 38.2 % fat mass) participated in this study. Before starting (week 0, W0) and at the end of the weight-management period (week 3, W3), body composition was assessed by a multifrequency tetrapolar impedancemeter (BIA); basal metabolic rate (BMR), energy expenditure and substrate oxidation rate during exercise and post exercise recovery by indirect calorimetry. At W3, body mass and fat mass decreased significantly (p<0.005) in all groups, and the decreases were significantly greater in the LI than in the HI group (-8.1+/-1.6 vs -5.9+/-1.6 kg and -4.2+/-1.9 vs -2.3+/-1.7 kg, p< 0.05, respectively). Predicted V'O2max, expressed in relative values, changed significantly only in the HI group by +0.010+/-0.006 L/(kg FFM x min), (p=0.010). By contrast, no significant changes were observed at W3 in BMR, energy expenditure and substrate oxidation rate during exercise and post-exercise recovery. In conclusion, LI (40% of V'O2max) physical activity favours fat oxidation and it seems advisable to encourage obese adolescents to perform LI physical activity which is more feasible and acceptable than intense exercise. (literal)
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