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Exercise tests in large groups of children are not a suitable screening procedure for undiagnosed asthma
Author(s) -
Johansson H.,
Foucard T.,
Pettersson L.G.
Publication year - 1997
Publication title -
allergy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.363
H-Index - 173
eISSN - 1398-9995
pISSN - 0105-4538
DOI - 10.1111/j.1398-9995.1997.tb00188.x
Subject(s) - medicine , asthma , exercise induced asthma , test (biology) , pediatrics , physical therapy , screening test , paleontology , biology
Schoolchildren ( n = 473), 12–13 years of age, from five schools, and without known asthma, participated in a screening test for exercise‐induced asthma (E1A). The children were tested in large groups of 10–15 pupils. Peak expiratory flow (PEF) was measured before, immediately after, and 6–8 min after 6 min of running exercises in a gymnasium. A fall in PEF of at least 10% on two separate test occasions was considered an abnormal result. Children with abnormal results were given an asthma questionnaire and then tested individually in hospital with a standardized exercise test measuring FEVb PEF, and flow/volume curve. In the screening test, 23 (4.9%) of the 473 children had an abnormal result. When tested in hospital, five (1%) children had a decrease in PEF and/or FEV, of at least 10% (10–14%) after exercise. Furthermore, three of these five children had a history indicating mild EIA. We conclude that the use of PEF measurement as a screening method for EIA in large groups of schoolchildren cannot be recommended because it yields many false‐positive results.