Document Detail


Effect of exercise training on respiratory muscle oxygenation in children with congenital heart disease.
MedLine Citation:
PMID:  16874152     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Diminished aerobic capacity and weakness of both respiratory and peripheral muscles have been observed in cardiac patients and may contribute to exercise limitation. The aim of this study was to evaluate the effects of a home-based training programme on aerobic fitness and oxygenation of the respiratory muscles in children with congenital heart disease (CHD). METHODS AND RESULTS: Eighteen patients with CHD aged 12-15 years participated in this study. Ten patients (training group, TG) underwent a training programme for 12 weeks and eight patients served as a non-training control group (CG). All subjects performed a cardiopulmonary exercise test before and after the study period. Oxygenation of the respiratory muscles was assessed using near-infrared spectroscopy. No significant differences were observed, at baseline and after the completion of the study, between the CG and TG in peak exercise workload, oxygen uptake (VO2), carbon dioxide output (VCO2), pulmonary ventilation (VE), and heart rate (HR). However, a significant improvement in exercise performance was found in the TG versus the CG when results were compared at the ventilatory threshold (Vth): workload (45.2+/-8.0 versus 58.5+/-7.4%; P<0.05), VO2 (62.3+/-7.5 versus 69.8+/-5.1%; P<0.05), VCO2 (49.8+/-5.7 versus 60.0+/-5.8%; P<0.05), VE (42.8+/-9.9 versus 50.1+/-9.5%; P<0.05), and HR (69.5+/-6.1 versus 76.0+/-3.5%; P<0.05). After training, an improvement in oxygenation of the respiratory muscles was found in the TG from 60% of VO2max until the end of exercise. At the Vth, the TG showed greater oxygenation after training (55.1+/-6.6 versus 43.0+/-6.9%, P<0.01, respectively). Furthermore, we showed a significant correlation of the change in respiratory muscle oxygenation and VO2 in the TG (r=0.90, P<0.01). CONCLUSION: It is concluded that general physical training at submaximal intensity induces better aerobic fitness and improves respiratory muscle oxygenation in children with CHD.
Authors:
Wassim Moalla; Yves Maingourd; Rémi Gauthier; Lawrence P Cahalin; Zouhair Tabka; Said Ahmaidi
Publication Detail:
Type:  Journal Article; Multicenter Study    
Journal Detail:
Title:  European journal of cardiovascular prevention and rehabilitation : official journal of the European Society of Cardiology, Working Groups on Epidemiology & Prevention and Cardiac Rehabilitation and Exercise Physiology     Volume:  13     ISSN:  1741-8267     ISO Abbreviation:  Eur J Cardiovasc Prev Rehabil     Publication Date:  2006 Aug 
Date Detail:
Created Date:  2006-07-28     Completed Date:  2006-12-07     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  101192000     Medline TA:  Eur J Cardiovasc Prev Rehabil     Country:  England    
Other Details:
Languages:  eng     Pagination:  604-11     Citation Subset:  IM    
Affiliation:
EA-3300: APS et Conduites Motrices: Adapations et Réadaptations, Faculté des Sciences du Sport, Université de Picardie Jules Verne, Amiens, France. wassim.moalla@gmail.com
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Child
Exercise Therapy*
Exercise Tolerance / physiology
Forced Expiratory Volume / physiology
Heart Failure / metabolism,  physiopathology,  rehabilitation*
Humans
Oxygen Consumption / physiology*
Prognosis
Respiratory Muscles / metabolism*
Spectroscopy, Near-Infrared

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