| Recovery of oxygen consumption after maximal exercise in children. | |
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MedLine Citation:
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PMID: 20798661 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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PURPOSE: : The period of early recovery after exercise is characterized by a rapid payback of the oxygen debt incurred during exercise. The purpose of this study was to test the hypothesis that the oxygen consumption (V˙O2) decline during the first minute of recovery after exercise will be faster in children with a higher peak V˙O2. METHODS: : We performed a clinically indicated bicycle exercise test in 203 children, aged 15.5 ± 3.2 yr; 33 had healthy heart/minimal heart disease, 59 had left-sided heart disease, 92 had right-sided heart disease, and 19 had postoperative single ventricle. V˙O2 was recorded at peak exercise and at 20, 40, and 60 s of recovery. RESULTS: : Peak V˙O2 in the study cohort was 30.1 ± 8.5 mL·kg·min and fell to 24.3 ± 6.7, 19.5 ± 4.9, and 15.3 ± 4.0 mL·kg·min at 20, 40, and 60 s of recovery, respectively. V˙O2 recovery was slower in children with right-sided heart disease and single ventricle compared with the other 2 groups and was faster in younger children, boys, children with a higher peak V˙O2, and in those with a lower RER at peak exercise. In the linear regression analysis, the slope of V˙O2 decline during the first minute of recovery was most strongly associated with the peak V˙O2 (R = 0.786, P < 0.001). The only other variable that added to the explained variance was peak RER (R = 0.796, P = 0.004). CONCLUSIONS: : V˙O2 decline during the first minute of recovery after maximum exercise is faster in children with higher peak V˙O2. V˙O2 recovery may be a useful tool in assessing cardiopulmonary health in children. |
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Authors:
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Tajinder P Singh; Mark E Alexander; Kimberlee Gauvreau; Tracy Curran; Yael Rhodes; Jonathan Rhodes |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Medicine and science in sports and exercise Volume: 43 ISSN: 1530-0315 ISO Abbreviation: Med Sci Sports Exerc Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-03-17 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8005433 Medline TA: Med Sci Sports Exerc Country: United States |
Other Details:
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Languages: eng Pagination: 555-9 Citation Subset: IM; S |
Affiliation:
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1Department of Cardiology, Children's Hospital Boston, Boston, MA; 2Department of Pediatrics, Harvard Medical School, Boston, MA; and 3Department of Biostatistics, Harvard School of Public Health, Boston, MA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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