A system for contact free energy expenditure assessment under free-living conditions: monitoring metabolism for weight loss using carbon dioxide emission

Weight disorders are strikingly prevalent globally and can contribute to a wide array of potentially
fatal diseases spanning from type II diabetes to coronary heart disease. These disorders have a
common cause: poor calorie balance. Since energy expenditure (EE) (kcal d −1 ) constitutes one half
of the calorie balance equation (the other half being food intake), its measurement could be of
great value to those suffering from weight disorders. A technique for contact free assessment of EE
is presented, which only relies on CO 2 concentration monitoring within a sealed office space, and
assessment of carbon dioxide production rate (VCO 2 ). Twenty healthy subjects were tested in a
cross-sectional study to evaluate the performance of the aforementioned technique in measuring both
resting EE (REE) and exercise EE using the proposed system (the 'SmartPad') and a U.S. Food and Drug
Administration (FDA) cleared gold standard reference instrument for EE measu...

Source: Journal of Breath Research - January 23, 2021 Category: Respiratory Medicine Authors: Mark Sprowls, Shaun Victor, Michael Serhan, Hugo Destaillats, Courtney Wheatley-Guy, Bruce Johnson, Doina Kulick and Erica Forzani Source Type: research