Effects of Using the Surgical Mask and FFP2 during the 6-Min Walking Test. A Randomized Controlled Trial

Sara Cabanillas-Barea, Jacobo Rodríguez-Sanz, Andoni Carrasco-Uribarren, Carlos López- de-Celis, Vanessa González-Rueda, Daniel Zegarra-Chávez, Simón Cedeño-Bermúdez and Albert Pérez-Bellmunt
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Sara Cabanillas-Barea: Faculty of Medicine and Health Sciences, Universitat International de Catalunya, 08028 Barcelona, Spain
Jacobo Rodríguez-Sanz: Faculty of Medicine and Health Sciences, Universitat International de Catalunya, 08028 Barcelona, Spain
Andoni Carrasco-Uribarren: Faculty of Medicine and Health Sciences, Universitat International de Catalunya, 08028 Barcelona, Spain
Carlos López- de-Celis: Faculty of Medicine and Health Sciences, Universitat International de Catalunya, 08028 Barcelona, Spain
Vanessa González-Rueda: Faculty of Medicine and Health Sciences, Universitat International de Catalunya, 08028 Barcelona, Spain
Daniel Zegarra-Chávez: Faculty of Medicine and Health Sciences, Universitat International de Catalunya, 08028 Barcelona, Spain
Simón Cedeño-Bermúdez: Faculty of Medicine and Health Sciences, Universitat International de Catalunya, 08028 Barcelona, Spain
Albert Pérez-Bellmunt: Faculty of Medicine and Health Sciences, Universitat International de Catalunya, 08028 Barcelona, Spain

IJERPH, 2021, vol. 18, issue 23, 1-9

Abstract: During the COVID-19 pandemic, the use of masks has been recommended as a containment measure. The mask is a hindrance to normal breathing that causes discomfort. This could put more work on the respiratory accessory muscles, and, consequently, these muscles could see their tone increase. For this reason, during this clinical trial (registered in clincaltrials.gov, number: NCT04789603), it was observed whether the use of the mask produced changes in the distance traveled, in the heart rate, in the oxygenometry, in the self-perceived dyspnea and in the tone of accessory respiratory muscles during a 6-min walk test (6MWT). Fifty healthy volunteers were recruited and carried out the 6MWT on three occasions. They carried out the 6MWT in various situations: using an FFP2/N95 mask, using a surgical mask, and without using a mask. The distance walked, the heart rate, the oxygen therapy, the tone of the accessory respiratory muscles, and the self-perceived dyspnea were recorded in each situation. Significant differences were found between the three situations in terms of self-perceived dyspnea FFP2/N95 > surgical mask > no mask. However, there are no differences between the experimental situations during the 6MWT in terms of distance travelled, heart rate, oxygenometry or respiratory muscle tone.

Keywords: walking; dyspnea; N95 respirators; mask; muscle tonus (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
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