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Related Experiment Videos

Is exercise testing useful in a community based asthma survey?

T K Ninan1, G Russell

  • 1Department of Child Health, University of Aberdeen, Foresterhill.

Thorax
|December 1, 1993
PubMed
Summary
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Cold air enhanced exercise testing offers minimal added value to respiratory questionnaires for diagnosing childhood asthma in community settings. This approach showed limited effectiveness in identifying asthma indicators like shortness of breath or wheezing.

Area of Science:

  • Pediatric Pulmonology
  • Community Health Research
  • Diagnostic Testing

Background:

  • Exercise challenge tests are utilized in hospital settings as a non-invasive method for diagnosing childhood asthma.
  • The efficacy of exercise testing in community-based asthma surveys remains largely unexplored.
  • This study aimed to assess the utility of an exercise test as a supplementary tool to respiratory questionnaires in a community asthma survey.

Purpose of the Study:

  • To evaluate the effectiveness of a cold air enhanced exercise challenge test.
  • To determine if exercise testing improves the diagnosis of asthma when used alongside a respiratory questionnaire in a community setting.
  • To identify predictors of bronchial hyperreactivity in children.

Main Methods:

  • A respiratory questionnaire was administered to 607 symptomatic and 135 asymptomatic children from a cohort of 4003 primary school students.

Related Experiment Videos

  • A subset of children underwent a six-minute cold air enhanced exercise challenge test.
  • Bronchial hyperreactivity was defined as a fall in FEV1 of 10% or more post-exercise.

    • Main Results:

    • Bronchial hyperreactivity was detected in 15 of 128 symptomatic children and 1 of 26 asymptomatic children.
    • The test showed low sensitivity for identifying children with frequent shortness of breath or wheeze.
    • Gestational age and neonatal ventilator support were identified as significant predictors of bronchial hyperreactivity.

    Conclusions:

    • Cold air enhanced exercise testing provides minimal additional diagnostic benefit when combined with a well-designed respiratory questionnaire in community asthma surveys for children.
    • The findings suggest that traditional questionnaires are more efficient for large-scale community asthma screening.