[Effect of a surgical mask on six minute walking distance].

INTRODUCTION Six minutes walking test (6MWT) is regularly used in pulmonology. To minimize the risk of cross-infection, some patients must wear surgical mask at rest and sometimes during exercise. AIM OF THE STUDY To evaluate the effect of wearing a surgical mask during 6MWT in healthy subjects. MATERIAL AND METHOD It is a prospective study on 44 healthy subjects. After a first 6MWT for training, they performed randomly two 6MWT: with or without a surgical mask. Distance and dyspnea, heart rate and saturation variations were recorded. RESULTS Distance was not modified by the mask (P=0.99). Dyspnea variation was significantly higher with surgical mask (+5.6 vs. +4.6; P<0.001) and the difference was clinically relevant. No difference was found for the variation of other parameters. CONCLUSION Wearing a surgical mask modifies significantly and clinically dyspnea without influencing walked distance.

[1]  S. Kesten,et al.  Comparison of hallway and treadmill six-minute walk tests. , 1999, American journal of respiratory and critical care medicine.

[2]  Jeffrey B. Powell,et al.  Evaluation of N95 respirator use with a surgical mask cover: effects on breathing resistance and inhaled carbon dioxide. , 2013, The Annals of occupational hygiene.

[3]  E. Newton,et al.  Effects of wearing N95 and surgical facemasks on heart rate, thermal stress and subjective sensations , 2005, International archives of occupational and environmental health.

[4]  Don Hayes,et al.  Bronchoconstriction triggered by breathing hot humid air in patients with asthma: role of cholinergic reflex. , 2012, American journal of respiratory and critical care medicine.

[5]  G. Reychler,et al.  Test de 6 minutes de marche en rééducation pulmonaire , 2010 .

[6]  T. Babb,et al.  Breathing mechanics during exercise with added dead space reflect mechanisms of ventilatory control , 2009, Respiratory Physiology & Neurobiology.

[7]  Lu-Yuan Lee,et al.  Bronchoconstriction induced by hyperventilation with humidified hot air: role of TRPV1-expressing airway afferents. , 2009, Journal of applied physiology.

[8]  Robert A Wise,et al.  Six-minute walk distance in chronic obstructive pulmonary disease: reproducibility and effect of walking course layout and length. , 2003, American journal of respiratory and critical care medicine.

[9]  C. Benden,et al.  Exercise testing in pediatric lung transplant candidates with cystic fibrosis , 2011, Pediatric transplantation.

[10]  G H Guyatt,et al.  Effect of encouragement on walking test performance. , 1984, Thorax.

[11]  Raymond J. Roberge,et al.  Absence of consequential changes in physiological, thermal and subjective responses from wearing a surgical mask , 2012, Respiratory Physiology & Neurobiology.

[12]  ATS statement: guidelines for the six-minute walk test. , 2002, American journal of respiratory and critical care medicine.

[13]  S. Keskil,et al.  Preliminary report on surgical mask induced deoxygenation during major surgery. , 2008, Neurocirugia.

[14]  L. Saiman,et al.  Infection Control in Cystic Fibrosis , 2004, Clinical Microbiology Reviews.

[15]  A. Woodcock,et al.  Two-, six-, and 12-minute walking tests in respiratory disease. , 1982, British medical journal.

[16]  P. O'Byrne,et al.  Symptom perception during acute bronchoconstriction. , 2000, American journal of respiratory and critical care medicine.

[18]  S. P. Gupta,et al.  Twelve-minute walking test for assessing disability in chronic bronchitis. , 1976, British medical journal.

[19]  P. Harber,et al.  Physiologic and subjective effects of respirator mask type. , 1991, American Industrial Hygiene Association journal.

[20]  Jeffrey B. Powell,et al.  Physiological impact of the N95 filtering facepiece respirator on healthcare workers. , 2010, Respiratory care.

[21]  M. Altose,et al.  Effects of voluntary constraining of thoracic displacement during hypercapnia. , 1987, Journal of applied physiology.

[22]  Reproducibility of walking test results in chronic obstructive airways disease. , 1988 .

[23]  D. Jensen,et al.  Respiratory Physiology & Neurobiology Effects of Dead Space Loading on Neuro-muscular and Neuro-ventilatory Coupling of the Respiratory System during Exercise in Healthy Adults: Implications for Dyspnea and Exercise Tolerance , 2022 .

[24]  Thierry Troosters,et al.  An official European Respiratory Society/American Thoracic Society technical standard: field walking tests in chronic respiratory disease , 2014, European Respiratory Journal.

[25]  M. Altose,et al.  Effects of changes in level and pattern of breathing on the sensation of dyspnea. , 1990, Journal of applied physiology.

[26]  A. Ries,et al.  Minimally Clinically Important Difference for the UCSD Shortness of Breath Questionnaire, Borg Scale, and Visual Analog Scale , 2005, COPD.

[27]  B. Shenal,et al.  Discomfort and Exertion Associated with Prolonged Wear of Respiratory Protection in a Health Care Setting , 2011, Journal of occupational and environmental hygiene.

[28]  K. de Meer,et al.  The six‐minute walking test in children with cystic fibrosis: Reliability and validity , 1996, Pediatric pulmonology.

[29]  Edward Newton,et al.  Evaluation on masks with exhaust valves and with exhaust holes from physiological and subjective responses. , 2008, Journal of physiological anthropology.