Cardiorespiratory fitness of asthmatic children and validation of predicted aerobic capacity.
Clin Respir J
; 3(1): 42-50, 2009 Jan.
Article
em En
| MEDLINE
| ID: mdl-20298371
ABSTRACT
INTRODUCTION:
Predicted aerobic capacity (PAC) was estimated by submaximal exercise test and compared with monitored aerobic capacity (MAC) measured by laboratory conditions [maximal oxygen uptake (VO(2peak))] in 18 children and adolescents, 10 asthmatics and 8 matched controls.OBJECTIVES:
To compare aerobic capacity between asthmatic children and controls, to estimate the agreement between PAC and MAC and observe for trend of PAC. MATERIALS ANDMETHODS:
The design was prospective, 4 years (PAC) and cross-sectional (MAC and VO(2peak)). Non-parametric Wilcoxon rank sums were applied for statistical evaluation; the method of Bland and Altman estimated the agreement between PAC and MAC; P < 0.05.RESULTS:
PAC at baseline and follow-up, and MAC at follow-up, showed significant differences between groups (P < 0.05), and the mean difference between PAC and MAC at follow-up was -1.0 mLO(2)/min/kg [non-significant (ns)], indicating that PAC had a bias towards underestimation as compared with MAC. Limits of agreement, mean difference [+/-2 standard deviations (SD)], ranged from -8.5 to 6.5 mLO(2)/min/kg, indicating good agreement between the two measurements. No trend of PAC was observed (ns). Physical activity level and subjective health showed no differences between groups, or level and categories, respectively.CONCLUSION:
The asthmatic participants presented with lower aerobic capacity than controls in both PAC and MAC; therefore, results confirmed the validity of the PAC method. Data warrant exploration by large-scale paediatric asthma epidemiology.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Consumo de Oxigênio
/
Asma
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Tolerância ao Exercício
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Teste de Esforço
/
Esforço Físico
Tipo de estudo:
Observational_studies
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Prevalence_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Adolescent
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Child
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Female
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Humans
/
Male
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article