Document Detail

Normal values for maximal static inspiratory and expiratory pressures in healthy children.
MedLine Citation:
PMID:  12112796     Owner:  NLM     Status:  MEDLINE    
Maximal static respiratory pressures are a simple measure of respiratory muscle strength. In order to construct a set of equations describing normal values, we measured maximal inspiratory (P(Imax)) and expiratory (P(Emax)) pressures in 296 children (144 boys and 152 girls), aged 7-14 years, in sitting and standing positions. The boys reached higher values in sitting and standing positions for P(Imax) (-8.29 +/- 2.69 and -8.19 +/- 2.73 kPa, respectively) and P(Emax) (8.02 +/- 2.32 and 7.94 +/- 2.32 kPa, respectively) than girls (-6.53 +/- 1.99 and -6.60 +/- 2.03 kPa for P(Imax) and 6.91 +/- 1.79 and 7.13 +/- 1.81 kPa for P(Emax) for sitting and standing positions, respectively); the differences between boys and girls were highly significant (P < 0.001 in all instances). There were no differences regarding body position during measurements in both genders. Multiple correlation analysis showed significant correlations of pressures to age in boys in all cases, but in girls only for P(Imax) in standing position. Therefore, equations describing reference values were constructed with respect to age as the independent variable. Maximal pressures also correlated with maximal inspiratory and expiratory flows. The measurements of P(Imax) and P(Emax) are useful in assessing respiratory muscle strength despite their relatively large variability. P(Imax) and P(Emax) also correlate with maximum peak expiratory and inspiratory flows. Children generate lower pressures and lower maximal flows than adolescents and adults.
Waldemar Tomalak; Andrzej Pogorzelski; Jarosław Prusak
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Pediatric pulmonology     Volume:  34     ISSN:  8755-6863     ISO Abbreviation:  Pediatr. Pulmonol.     Publication Date:  2002 Jul 
Date Detail:
Created Date:  2002-07-11     Completed Date:  2002-09-13     Revised Date:  2009-11-03    
Medline Journal Info:
Nlm Unique ID:  8510590     Medline TA:  Pediatr Pulmonol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  42-6     Citation Subset:  IM    
Copyright Information:
Copyright 2002 Wiley-Liss, Inc.
Paediatric Division, National Institute for Tuberculosis and Lung Diseases, Rabka, Poland.
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MeSH Terms
Forced Expiratory Volume / physiology*
Maximal Midexpiratory Flow Rate / physiology*
Reference Values
Regression Analysis
Vital Capacity / physiology*

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