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Absence of consequential changes in physiological, thermal and subjective responses from wearing a surgical mask.

Authors
Roberge-RJ; Kim-J-H; Benson-SM
Source
Respir Physiol Neurobiol 2012 Apr; 181(1):29-35
NIOSHTIC No.
20040375
Abstract
Twenty subjects treadmill exercised at 5.6 km/h for 1 h with and without wearing a surgical mask while being monitored for heart rate, respiratory rate, oxygen saturation, transcutaneous CO2, SpO2, core and skin temperatures, mask deadspace heat and relative humidity, and skin temperature under the mask. Rating scales were utilized for exertion and heat perceptions. Surgical mask use resulted in increases in heart rate (9.5 beats/min; p < 0.001), respiratory rate (1.6 breaths/min; p = 0.02), and transcutaneous carbon dioxide (2.17 mm Hg; p = 0.0006), and decreased temperature of uncovered facial skin (0.40 degrees C; p = 0.03). The 1.76 degrees C increase in temperature of the skin covered by the mask was associated with a mask deadspace apparent heat index of 52.9 degrees C. Perceptions of heat were neutral to slightly hot, and for exertion ranged from very, very light to fairly light. Surgical mask use for 1 h at a low-moderate work rate is not associated with clinically significant physiological impact or significant subjective perceptions of exertion or heat.
Keywords
Humans; Men; Women; Physical-exercise; Physiological-effects; Physiological-factors; Respiration; Respiratory-rate; Heart-rate; Exposure-limits; Exposure-assessment; Personal-protective-equipment; Personal-protection; Body-temperature; Author Keywords: Surgical mask; Thermal burden; Physiological impact; Subjective perceptions
CODEN
RPNEAV
Publication Date
20120401
Document Type
Journal Article
Email Address
dtn0@cdc.gov
Fiscal Year
2012
NTIS Accession No.
NTIS Price
Identifying No.
B02292012
Issue of Publication
1
ISSN
1569-9048
NIOSH Division
NPPTL
Priority Area
Healthcare and Social Assistance
Source Name
Respiratory Physiology & Neurobiology
State
PA
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