| Exercise training associated with diet improves heart rate recovery and cardiac autonomic nervous system activity in obese children. | |
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MedLine Citation:
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PMID: 21072735 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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The purpose of this study was to test the hypotheses that in obese children: 1) hypocaloric diet (D) improves both heart rate recovery at 1 min (Δ HRR1) cfter an exercise test, and cardiac autonomic nervous system activity (CANSA) in obese children; 2) Diet and exercise training (DET) combined leads to greater improvement in both Δ HRR1 after an exercise test and in CANSA, than D alone. Moreover, we examined the relationships among Δ HRR1, CANSA, cardiorespiratory fitness and anthropometric variables (AV) in obese children submitted to D and to DET. 33 obese children (10 ± 0.2 years; body mass index (BMI) >95 (th) percentile) were divided into 2 groups: D (n=15; BMI=31 ± 1 kg/m²)) and DET (n=18; 29 ± 1 kg/m²). All children performed a maximal cardiopulmonary exercise test on a treadmill. The Δ HRR1 or LF/HF ratio (P>0.05). In contrast, the DET group showed increased peak VO₂ ( P=0.01) and improved Δ HRR1 (Δ HRR1=37.3 ± 2.6; P=0.01) and LF/HF ratio ( P=0.001). The DET group demonstrated significant relationships among Δ HRR1, peak VO₂ and CANSA (P<0.05). In conclusion, DET, in contrast to D, promoted improved ÄΔ HRR1 and CANSA in obese children, suggesting a positive influence of increased levels of cardiorespiratory fitness by exercise training on cardiac autonomic activity. |
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Authors:
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D M Prado; A G Silva; I C Trombetta; M M Ribeiro; I C Guazzelli; L N Matos; M S Santos; C M Nicolau; C E Negrão; S M Villares |
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Publication Detail:
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Type: Journal Article Date: 2010-11-11 |
Journal Detail:
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Title: International journal of sports medicine Volume: 31 ISSN: 1439-3964 ISO Abbreviation: Int J Sports Med Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-12-17 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8008349 Medline TA: Int J Sports Med Country: Germany |
Other Details:
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Languages: eng Pagination: 860-5 Citation Subset: IM |
Copyright Information:
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© J. A. Barth Verlag in Georg Thieme Verlag KG Stuttgart · New York. |
Affiliation:
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Medical School, Department of Endocrinology, University of São Paulo, Brazil. danilomprado@usp.br |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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