Impact of wearing a surgical and cloth mask during cycle exercise.
Appl Physiol Nutr Metab
; 46(7): 753-762, 2021 Jul.
Article
in English
| MEDLINE | ID: covidwho-1571437
ABSTRACT
We sought to determine the impact of wearing cloth or surgical masks on the cardiopulmonary responses to moderate-intensity exercise. Twelve subjects (n = 5 females) completed three, 8-min cycling trials while breathing through a non-rebreathing valve (laboratory control), cloth, or surgical mask. Heart rate (HR), oxyhemoglobin saturation (SpO2), breathing frequency, mouth pressure, partial pressure of end-tidal carbon dioxide (PetCO2) and oxygen (PetO2), dyspnea were measured throughout exercise. A subset of n = 6 subjects completed an additional exercise bout without a mask (ecological control). There were no differences in breathing frequency, HR or SpO2 across conditions (all p > 0.05). Compared with the laboratory control (4.7 ± 0.9 cmH2O [mean ± SD]), mouth pressure swings were smaller with the surgical mask (0.9 ± 0.7; p < 0.0001), but similar with the cloth mask (3.6 ± 4.8 cmH2O; p = 0.66). Wearing a cloth mask decreased PetO2 (-3.5 ± 3.7 mm Hg) and increased PetCO2 (+2.0 ± 1.3 mm Hg) relative to the ecological control (both p < 0.05). There were no differences in end-tidal gases between mask conditions and laboratory control (both p > 0.05). Dyspnea was similar between the control conditions and the surgical mask (p > 0.05) but was greater with the cloth mask compared with laboratory (+0.9 ± 1.2) and ecological (+1.5 ± 1.3) control conditions (both p < 0.05). Wearing a mask during short-term moderate-intensity exercise may increase dyspnea but has minimal impact on the cardiopulmonary response. Novelty Wearing surgical or cloth masks during exercise has no impact on breathing frequency, tidal volume, oxygenation, and heart rate However, there are some changes in inspired and expired gas fractions that are physiologically irrelevant. In young healthy individuals, wearing surgical or cloth masks during submaximal exercise has few physiological consequences.
Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Oxyhemoglobins
/
Exercise
/
Respiratory Rate
/
Heart Rate
/
Masks
Type of study:
Experimental Studies
/
Reviews
Limits:
Adult
/
Female
/
Humans
/
Male
/
Young adult
Language:
English
Journal:
Appl Physiol Nutr Metab
Journal subject:
Nutritional Sciences
/
Physiology
/
Sports Medicine
/
Metabolism
Year:
2021
Document Type:
Article
Affiliation country:
Apnm-2021-0190
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