This Chinese study finds that wearing N95 face masks for 14 hours significantly affects physiological, biochemical, and perception parameters. The effect was primarily caused by increased respiratory resistance and subsequent decreased blood oxygen and pH.
This randomized clinical trial included 30 healthy participants between March 7 and August 1, 2022, and was conducted in a metabolic chamber to strictly control daily calorie intake and physical activity levels. Participants were randomly assigned to receive exercise interventions with and without masks for 14 hours, during which thy exercised for 30 minutes in the morning and afternoon.
Wearing the N95 masks resulted in:
Although healthy individuals can compensate for cardiopulmonary overload, the elderly, children, and those with cardiopulmonary diseases may experience compromised compensation, the researchers say.Read More >>