Deep Inspiration Avoidance and Airway Response to Methacholine: Influence of Body Mass Index

Abstract

As previously observed in patients with asthma, the present study found that nonasthmatic obese subjects had no increase in the fall in FEV1 after deep inspiration avoidance before methacholine, whereas nonobese subjects did, suggesting that obesity alters airway function. No significant changes were found between groups for symptom perception.