Comparing the Effect of N-95 vs Surgical Mask Use on Resting Metabolic Data Changes

Authors

Robert Steinberg, NYITCOMFollow
Alexander Rothstein, New York Institute of TechnologyFollow
Amerigo Rossi, New York Institute of Technology
Alyssa Hillian, New York Institute of Technology
Joanne DiFrancisco-Donoghue, NYITCOM

Abstract

Face masks reduce the spread of viral respiratory particles, however, their impact on respiratory physiology requires further research. Previous studies reported negative changes in gas exchange data when wearing a surgical mask, however, breath-by-breath data has not been analyzed. PURPOSE: To compare physiological changes when wearing an N95 mask and surgical mask at rest. Variables measured include oxygen consumption (VO2), carbon dioxide ventilation (VC02), respiratory exchange ratio (RER), heart rate (HR), respiratory rate (RR), minute ventilation (MV), and discomfort. METHODS: 42 subjects ages 18-55 (19 men; age 22.98±3.83) were recruited. Exclusion criteria was a history of metabolic disease/claustrophobia. Respiratory and metabolic data was collected using indirect calorimetry under a hood. RR was recorded via a smart skin apparatus for breath-by-breath data. Testing consisted of three 15-minute trials: no mask, N-95 mask, and a surgical mask. HR, VO2, VC02, RER, RR and MV were recorded at 1-minute intervals. Discomfort was assessed using a Likert scale. Results were analyzed using repeated measures ANOVA. RESULTS: VCO2 was significantly lower in surgical masks when compared to the control (p=.05). Both surgical and N95 masks had significantly lower RERs (pCONCLUSION:Variance in gas exchange data suggests alterations in respiratory efficiency and metabolic rate while using face masks. This is supported by the significant decrease in RER with both masks, indicating a shift in substrate preference towards fat metabolism. While there were no significant differences in RR, MV was increased, suggesting compensation for altered gas exchange. This may account for the increased discomfort associated with mask use, particularly with N95s.

Recommended Citation

Steinberg, Robert; Rothstein, Alexander; Rossi, Amerigo; Hillian, Alyssa; and DiFrancisco-Donoghue, Joanne (2024) "Comparing the Effect of N-95 vs Surgical Mask Use on Resting Metabolic Data Changes," International Journal of Exercise Science: Conference Proceedings: Vol. 15: Iss. 4, Article 36.
Available at: https://digitalcommons.wku.edu/ijesab/vol15/iss4/36