Annales de cardiologie et d'angeiologie · 2025
[Physical Activity while wearing a Mask : A Comparison of Respiratory Parameters During Submaximal Exercise between Surgical, Cloth Masks and Sham Masks ; The PAM study].
СтатьяСравнительное исследованиеАннотация на английскомНазвание и аннотация: Перевод пока не подготовлен
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Duc Philippe, Duc Bich-Vân, Iliou Marie-Christine, Cachanado Marine, Fels Audrey, Sosner Philippe, Komajda Michel, Cador Romain
Аннотация
INTRODUCTION: Data on the effect of masks on ventilatory parameters are limited to maximal exercise. Their effects during submaximal exercise mimicking daily activities are unknown.
OBJECTIVE: The primary endpoint was O2 consumption (VO2) at a level corresponding to 75% of maximum exercise capacity determined during a maximal treadmill test without a mask.
METHODS: Prospective cohort study comparing the effects of surgical and cloth masks to those of a sham mask on a non-inferiority basis (threshold -2 ml/kg/min). Subjects with no apparent heart or lung disease who regularly participated in sports were included.
RESULTS: Seventy-five subjects were selected and 41 were analyzed (age: 37.5 ± 11.8 years, women: 34.2%, BMI: 22.5 ± 2.5 kg/m2). At 75% of maximum exercise capacity, heart rate was 164 ± 14 bpm and VO2 was 42 ± 6 ml/min/kg with the sham mask. A slight difference in VO2 between the sham mask and the cloth or surgical masks was observed (-2.2 and -1.4 ml/kg/min, respectively), but the lower limit of the 97.5% confidence interval (-3.0 and -2.2 ml/kg/min, respectively) exceeded the predefined non-inferiority limit of -2 ml/kg/min, and we cannot conclude non-inferiority. No differences were observed in terms of heart rate or respiratory exchange ratio (RER).
CONCLUSION: Both surgical and cloth masks slightly reduced VO2 consumption. However, expiratory volume was reduced with both surgical and cloth masks, suggesting that the masks significantly reduced ventilation during exercise.
OBJECTIVE: The primary endpoint was O2 consumption (VO2) at a level corresponding to 75% of maximum exercise capacity determined during a maximal treadmill test without a mask.
METHODS: Prospective cohort study comparing the effects of surgical and cloth masks to those of a sham mask on a non-inferiority basis (threshold -2 ml/kg/min). Subjects with no apparent heart or lung disease who regularly participated in sports were included.
RESULTS: Seventy-five subjects were selected and 41 were analyzed (age: 37.5 ± 11.8 years, women: 34.2%, BMI: 22.5 ± 2.5 kg/m2). At 75% of maximum exercise capacity, heart rate was 164 ± 14 bpm and VO2 was 42 ± 6 ml/min/kg with the sham mask. A slight difference in VO2 between the sham mask and the cloth or surgical masks was observed (-2.2 and -1.4 ml/kg/min, respectively), but the lower limit of the 97.5% confidence interval (-3.0 and -2.2 ml/kg/min, respectively) exceeded the predefined non-inferiority limit of -2 ml/kg/min, and we cannot conclude non-inferiority. No differences were observed in terms of heart rate or respiratory exchange ratio (RER).
CONCLUSION: Both surgical and cloth masks slightly reduced VO2 consumption. However, expiratory volume was reduced with both surgical and cloth masks, suggesting that the masks significantly reduced ventilation during exercise.