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Area of Science:

  • Exercise Physiology
  • Environmental Health
  • Sports Medicine

Background:

  • Surgical masks are commonly used for infection control.
  • Their impact on physiological and perceptual responses during strenuous exercise, particularly in heat, requires investigation.
  • Understanding these effects is crucial for athlete safety and performance.

Purpose of the Study:

  • To examine the physiological and perceptual effects of wearing surgical masks during high-intensity interval exercise (HIIE).
  • To compare these effects in both hot (36°C) and temperate (23°C) environments.
  • To determine if environmental heat exacerbates the impact of mask-wearing during exercise.

Main Methods:

  • Ten healthy participants completed randomized HIIE sessions.
  • Sessions were conducted in both hot (36°C) and temperate (23°C) conditions.
  • Participants either wore a surgical mask (MASK) or did not (CON) during exercise.

Main Results:

  • No significant differences in physiological variables were observed between mask and no-mask conditions.
  • Wearing a surgical mask led to increased perceived dyspnea (shortness of breath) and rating of perceived exertion (RPE).
  • The most pronounced increases in dyspnea and RPE occurred under the hot environment/mask condition (HIIE-HOT/MASK).

Conclusions:

  • Surgical mask use during HIIE elevates perceived exertion and breathlessness.
  • Hot environments significantly intensify these perceived responses when wearing a mask during exercise.
  • These findings highlight potential challenges for exercise in heat while masked.