Impulse oscillometry is sensitive to bronchoconstriction after eucapnic voluntary hyperventilation or exercise.
Airway responses were compared following 6-minute eucapnic voluntary hyperventilation and 6-minute exercise challenges by examining resting and post-challenge impulse oscillometry and spirometry variables. Twenty-two physically active individuals with probable exercise-induced bronchoconstriction took part in this study. Impulse oscillometry and spirometry were performed at baseline and for 20 minutes post-challenge at 5-minute intervals. High correlation was found between the two measures of change in airway function for both methods of challenge. Impulse oscillometry detected a difference in degree of response to the challenges, whereas spirometry indicated no difference, suggesting that impulse oscillometry is a more sensitive measure of change in airway function.
Evans
Tina M
TM
Marywood University, Scranton, Pennsylvania 18509, USA. rundell@es.marywood.edu
Rundell
Kenneth W
KW
Beck
Kenneth C
KC
Levine
Alan M
AM
Baumann
Jennifer M
JM
D000293:Adolescent; D000328:Adult; D000403:Airway Resistance / Q000502:physiology; D019540:Area Under Curve; D001250:Asthma, Exercise-Induced / Q000503:physiopathology*; D016084:Bronchoconstriction / Q000502:physiology*; D015444:Exercise / Q000502:physiology*; D005260:Female; D005541:Forced Expiratory Volume / Q000502:physiology; D006801:Humans; D006985:Hyperventilation / Q000139:chemically induced / Q000503:physiopathology*; D008297:Male; D008450:Maximal Midexpiratory Flow Rate / Q000502:physiology; D009991:Oscillometry; D012123:Pulmonary Ventilation / Q000502:physiology*; D013147:Spirometry; D014797:Vital Capacity / Q000502:physiology