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Acute effects of nicotine-free and flavour-free electronic cigarette use on lung functions in healthy and asthmatic individuals

February 10, 2017
By Marie-Ève Boulay, Cyndi Henry, Ynuk Bossé, Louis-Philippe Boulet, and Mathieu C. Morissette

Study finds vaping does not significant impact pulmonary functions, respiratory mechanics, or symptoms in healthy or asthmatic subjects.

Abstract
We designed a crossover and placebo-controlled trial to investigate the impact of a 1-h acute vaping session of nicotine-free and flavour-free e-liquid on the pulmonary functions and respiratory mechanics of healthy and asthmatic individuals. This study shows that a 1-h vaping session of a high-grade and contaminant-free mixture of propylene glycol and glycerol using a commercially available electronic cigarette performed in a controlled environment does not significantly impact pulmonary functions, respiratory mechanics or symptoms in healthy or asthmatic subjects.