Impact of vaping and smoking on maximum respiratory pressures and respiratory function

The effects of electronic-cigarette use (vaping), marketed as a healthier alternative to cigarette smoking (CS), on lung function remain equivocal. Therefore, this study assessed and compared the vaping CS maximum respiratory pressures (MRP), carboxyhaemoglobin levels. Forty-four young healthy participants were recruited: vapers (n = 12), smokers 14), people who had never vaped nor smoked (control) group 18). Spirometry, MRP levels measured. Both lower Forced expiratory volume in first second (FEV1), Peak flow, FEV1/Forced vital capacity (FEV1/FVC), flow at 25%, 25–75% FVC, FEF25-75pred% higher carboxyhaemoglobin% than controls (p < 0.05). In smokers, but not vapers, FEV1pred% was 0.01). did differ significantly between three groups. Vaping has similar detrimental pulmonary may thus be smoking.