Evaluation of a digital fully-contactless optical device to quantify and record breathing pattern components at rest and after exercise

This study evaluated the criterion-validity of structured light plethysmography versus respiratory inductive plethysmography at rest and following submaximal exercise in 50 adult volunteers. Lung function parameters (FEV1, FVC, FEV1/FVC ratio) were recorded as part of the study, with measurements obtained using the Vitalograph Alpha spirometer.