An interventional study of N95 mask in Bronchial Asthma, sponsored by University of Saskatchewan. Recruiting at 1 site in Canada. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-06-02.
Sponsored by University of Saskatchewan · Not applicable, Interventional, and Prevention
Lung health is negatively affected during wildfire season by increased smoke pollution. Wearing N95 masks protects lung health in the short-term. The purpose of our study is to assess whether wearing of N95 facemasks on days with moderate to high air pollution in people who go outside to golf on a regular basis (two or more times per week) for two months during the wildfire season projects lung health.
Wildfire smoke negatively affects lung health. Across North American, millions of people are exposed to wildfire smoke most summers. The purpose of our study is to determine whether people who golf regularly (two or more times per week) can use N95 masks to protect their lungs from wildfire smoke. Forty regular golfers will be randomized to receive N95 masks or not to receive masks. All participants will be told to follow guidelines for outdoor activity based on Air Quality Health Index readings. Those randomized to wear N95 facemasks will be asked to wear these on days they golf where Air Quality Health Index indicates moderate risk or higher. The main outcome is compliance with wearing the N95 mask. Secondary outcomes include changes in lung function, blood pressure, and respiratory symptoms over two months.
4,841 studies on the registry are indexed under Asthma; 600 are open to participants now.
This study's planned enrollment of 40 is below the median of 78 across 3,341 interventional studies indexed under Asthma.
Browse Asthma studies →University of Saskatchewan is the lead sponsor of 243 studies on the registry; 34 are open to participants now.
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Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
N95 masks will be worn outdoors when Air Quality Health Index indicates moderate risk or higher (4 or higher)
Device: N95 mask
No N95 masks will be provided to participants
N95 mask to be worn outside when golfing when Air Quality Health Index reading indicates moderate risk or higher
Change in compliance with wearing of N95 masks (number of times divided by days with moderate or higher air pollution)
compliance with wearing the N95 masks
Time frame: 8 weeks
Change in forced expiratory volume in one second (L)
Force expiratory volume in one second measured with spirometry
Time frame: 8 weeks
Change in forced vital capacity (mL)
Forced vital capacity measured by spirometry
Time frame: 8 weeks
Change in forced expiratory flow at 25% to 75% of vital capacity (mL)
forced expiratory flow at 25% to 75% of vital capacity measured by spirometry
Time frame: 8 weeks
Change in respiratory symptoms (score out of 12)
Respiratory symptoms determined by the Dyspnoea-12 questionnaire
Time frame: 8 weeks
Change in systolic blood pressure (mmHg)
Systolic blood pressure measured by an automatic sphygmomanometer
Time frame: 8 weeks
Change in diastolic blood pressure (mmHg)
Diastolic blood pressure measured by an automatic sphygmomanometer
Time frame: 8 weeks
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