Exercise-induced asthma in a group of South African schoolchildren during physical education classes.
OBJECTIVE
The study was conducted to ascertain whether physical education teachers, using a peak flow meter, could reliably screen for exercise-induced asthma (EIA) in children during free running.


METHODS
The study was conducted using a convenience sample of male pupils between the ages of 12 and 18 years. They were tested with a peak flow meter for peak expiratory flow rate (PEFR) and with a flow-volume curve for forced expiratory flow in 1 second (FEV1) before and 10 minutes after a self-paced free running test during physical education classes. Testing was undertaken by teachers using the peak flow meter and by a medical doctor using a flow-volume curve.


RESULTS
Using a 10% decrease in flow parameters (PEFR and FEV1), teachers detected EIA in 14.9% of pupils and the doctor detected EIA in 21.7% of pupils.


CONCLUSIONS
We conclude that EIA is common and that teachers using a peak flow meter can detect EIA and thus screen for it; they do, however, underestimate the true magnitude of the problem.
Kirkby
R E
RE
Department of Family Medicine, University of Pretoria.
Ker
J A
JA
D000293:Adolescent; D001250:Asthma, Exercise-Induced / Q000175:diagnosis*; D002648:Child; D003430:Cross-Sectional Studies; D004864:Equipment and Supplies; D005540:Forced Expiratory Flow Rates; D006801:Humans; D008297:Male; D010366:Peak Expiratory Flow Rate; D010806:Physical Education and Training; D012420:Running; D012574:Schools; D013019:South Africa