EFFECT OF A RHINOVIRUS-CAUSED UPPER RESPIRATORY ILLNESS ON PULMONARY-FUNCTION TEST AND EXERCISE RESPONSES

Upper respiratory illness (URI) may cause more frequent acute disabili ty among athletes than all other diseases combined. The purposes of th is study were to determine the impact of a rhinovirus-caused URI on re sting pulmonary function submaximal exercise responses and on maximal exercise functional capacity. Twenty-four men and 21 women (18-29 yr) of varying fitness levels were assigned to the experimental group (URI ), and 10 additional individuals served as a control group (CRL). An i nitial serological screening was performed on all URI group subjects t o exclude those with the rhinovirus 16(HRV16)antibody. All subjects co mpleted both a baseline pulmonary function test and a graded exercise test to volitional fatigue. URI subjects were inoculated with HRV 16 o n two consecutive days within 10 d of completing these tests. The day following the second inoculation (peak of illness), post-inoculation p ulmonary function and graded exercise tests were performed. A noninfec ted control group completed these same pulmonary and exercise tests 1 wk apart. ANOVA identified no significant differences (P < 0.05) at mi nutes 2, 5, and 8 for the physiological responses measured between the pre- and post-exercise tests for both the URI and CRL groups. Further more. there were no significant differences between maximal exercise p erformance between running trials for either group. There was also no significant interaction between treatment (pre/post URI) and group for any of the pulmonary function measures obtained. In conclusion, physi ological responses to pulmonary function testing and submaximal and ma ximal exercise do not appear to be altered by an URI.