Neuromuscular Research Lab, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz Quebrada, Portugal.
CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz Quebrada, Portugal.
Clin Physiol Funct Imaging. 2022 Jan;42(1):43-52. doi: 10.1111/cpf.12734. Epub 2021 Nov 20.
We aimed at examining the impact of wearing surgical face masks on exercise performance. Thirty-two healthy adults (16 males and 16 females) completed a graded exercise test to measure peak oxygen uptake (VO ) and the ventilatory threshold (VT). Then, on separate days, all participants performed resting and standardized protocols (moderate intensity: 25% infra-VT; severe intensity: 25% supra-VT) on two different conditions (with and without a surgical mask). The use of masks reduced both VO and minute ventilation during moderate and severe exercise (p < 0.0001), and this effect was particularly pronounced during severe exercise. Time to exhaustion was also shortened by ~10% on the face mask condition (p = 0.014). In contrast, neither heart rate nor the respiratory exchange ratio was affected by masking. The submaximal VO was similar between the two epochs of analysis obtained during moderate cycling (i.e. 3-6 min vs. 7-10 min) and this occurred similarly between conditions. In conclusion, the impact of the surgical masks on exercise capacity is particularly pronounced during severe exercise performed at constant work rate. Ultimately, this may implicate a considerable impairment of structured or even unstructured strenuous physical activity. Clinical Trials registration number: NCT04963049.
我们旨在研究佩戴外科口罩对运动表现的影响。32 名健康成年人（16 名男性和 16 名女性）完成了分级运动测试，以测量峰值摄氧量（VO ）和通气阈（VT）。然后，在不同的日子里，所有参与者在两种不同条件下（佩戴和不佩戴外科口罩）进行了休息和标准化方案（中等强度：25%低于 VT；剧烈强度：25%高于 VT）。口罩的使用减少了中等和剧烈运动时的 VO 和分钟通气量（p<0.0001），在剧烈运动时这种影响更为明显。在口罩条件下，疲劳时间也缩短了约 10%（p=0.014）。相比之下，口罩并没有影响心率或呼吸交换率。在中等强度自行车运动的两个分析时段（即 3-6 分钟与 7-10 分钟）之间，VO 相似，并且在两种条件下的结果相似。总之，外科口罩对运动能力的影响在恒定工作速率下进行剧烈运动时尤为明显。最终，这可能会对结构化甚至非结构化的剧烈体力活动造成相当大的损害。临床试验注册号：NCT04963049。
