The Science Journal of the American Association for Respiratory Care

2001 OPEN FORUM Abstracts

Detection of OccultExercise-Induced Asthma in Collegiate Athletes Following a Six-minute Free Run

Johnson TJ

,Hill-Lombardi V, O?Connor D, Fung K, Hoo P, Isaray L, Ingrassia D, Joseph J,Santos C, Thomas J. Johnson, M.S., R.R.T. Long Island University, School of Health Professions, Division of RespiratoryCare, Brooklyn, New York, 11201

Research Question: What isthe prevalence of exercise-induced asthma in athletes who play intercollegiatesports? Data from other researchers (Kukafka et al. and Harries) suggest thatthe prevalence may range from 9% in high school athletes to 20% in (British)Olympic athletes; our small study investigated the prevalence in a group ofintercollegiate athletes on an urban campus.

Methods & Materials: Athletictrainers and coaches recruited volunteers from male and female inter-collegiateathletes who play basketball, soccer and track. Volunteers were screened andexclusion criteria included being a current respiratory tract infection, a diagnosedhistory of adolescent or adult asthma or exercise-induced asthma, smoking andclinical evidence of a respiratory infection. Participants signed an informedconsent and then completed a screening survey regarding their personal and familymedical history. Baseline and subsequent spirometry was performed using ATScriteria for calibration and performance validity using a Renaissance (Puritan-BennettCorp., Lenexa, KS). A resting EKG (KoKo Rhythm, Pulmonary Data Services, Louisville,CO), tympanic body temperature, and pulse rate were taken. The ambient temperatureand relative humidity of the gymnasium was recorded for each day of testing.

The participants were required torun for six minutes in a gymnasium at a speed that would produce a heart rateof approximately 80% of their predicted maximal heart rate (220 ? age X 0.80).Immediately after the run the participants were seated without a cool down anda post-exercise spirometry, heart rate and tympanic temperature were taken.Subsequent spirometric values were taken in the five-minute intervals up to30 minutes post exercise.

The University?s institutional reviewboard for human research (IRB) approved the study.

Results: Twelve intercollegiateathletes met the inclusion criteria and signed informed consent. The averageage was 19 y/o (range 18 ?21) with an average height of 67.4 inches (the averagemale was 70 inches while the average female was 66 inches) and weight of 150lbs. (the average male was 32 lbs. heavier than his female counterpart). Therewere no significant differences in tympanic body temperature (96.3oF),blood pressure (116/72 male vs. 116/69.4 female) or resting heart rate (71.2male vs. 72.7 female) among the participants. Of the 12 participants, 5 maleand 7 female, two had a 15% or greater drop in their FEV1% (FEV1/FVC). Bothparticipants experienced an 18% and 15% decline in their FEV1% at 15 minutespost running and both of these participants recovered to within 6% of theirbaseline FEV1% by thirty minutes. Participants were between 18 and 21 years.There were no significant differences in pre and post tympanic (body) temperatureor in pulse rate. As might be expected, there were no complaints of shortnessof breath, wheezing or chest tightness. Ambient conditions experienced a relativehumidity of 32.0% + 7.0% and a temperature which averaged 73.2oF (71.60 F to 76.1o F).

Conclusion: Our limited datasuggests that a number of inter-collegiate athletes may have undiagnosed oroccult exercised-induced asthma and that further study is necessary to determinethe prevalence of EIA in inter-collegiate athletes.


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