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Summary Background & aims During the coronavirus disease 2019 (COVID-19) pandemic the use of Indirect calorimetry (IC) during nutritional rehabilitation program requires special precautions due to possible contagions for patients and health professionals We evaluated in a sample of healthy subjects the agreement between oxygen consumption (VO2 mL/min), carbon dioxide production (VCO2 mL/min), respiratory quotient (RQ) and resting energy expenditure (REE kcal/24 h/day) measured by IC with and without a filtering facepiece mask Materials 10 subjects with a mean (SD) age of 43 (10) years and a body mass index of 25 2 (5 8) kg/m2 underwent indirect calorimetry both with and without a class 2 filtering facepiece mask (FFP2), in random order The limits of agreement (LOA) and the concordance correlation coefficient (CCC) were used to evaluate the interchangeability of the measurement conditions Results The LOA between REE measured with and without FFP2 (−111 to 189 kcal/day) were comparable to those for repeated IC tests without wearing masks and CCC (0 95) showed substantial agreement Conclusions We observed high agreement between REE measured by IC with and without FFP2 mask These procedures are interchangeable in clinical practice
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Effects of wearing a FFP2 mask on indirect calorimetry measurements: A pilot study
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