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Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma
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Exercise-induced bronchospasm in obese adolescents.

W A Lopes1, R B Radominski, N A Rosário Filho

  • 1Department of Physical Education, Faculdade Guairacá, Brazil.

Allergologia Et Immunopathologia
|September 29, 2009
PubMed
Summary
This summary is machine-generated.

Obesity does not increase exercise-induced bronchospasm (EIB) frequency in adolescents with asthma. However, obese asthmatic adolescents experience more severe EIB and slower recovery compared to non-obese asthmatics.

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Area of Science:

  • Pediatric Pulmonology
  • Obesity Research
  • Exercise Physiology

Background:

  • Exercise-induced bronchospasm (EIB) is a common condition in adolescents.
  • The impact of obesity on EIB frequency and severity requires further investigation.

Purpose of the Study:

  • To assess the frequency and severity of EIB in obese adolescents.
  • To compare EIB parameters between obese and non-obese adolescents with and without asthma.

Main Methods:

  • A cross-sectional study of 80 adolescents (10-16 years) categorized into four groups: asthmatic obese, asthmatic non-obese, obese non-asthmatic, and healthy.
  • Exercise bronchoprovocation tests were used to diagnose EIB, measuring forced expiratory volume in one second (FEV(1)) changes.
  • EIB severity and recovery were evaluated using maximum percent fall in FEV(1) (MF%FEV(1)) and area above the curve (AAC(0-30)).

Main Results:

  • EIB frequency did not significantly differ between asthmatic obese (50.0%) and asthmatic non-obese (38.0%) individuals.
  • EIB frequency was also similar between obese non-asthmatics (11.5%) and healthy individuals (6.7%).
  • Significantly greater MF%FEV(1) and AAC(0-30) were observed in asthmatic obese adolescents compared to asthmatic non-obese adolescents (37.7% vs 24.5% and 455 vs 214, respectively; p<0.03).

Conclusions:

  • Obesity does not influence the frequency of EIB in adolescents, regardless of asthma status.
  • Obesity is associated with increased severity and slower recovery of EIB in adolescents with asthma.