Driver Simon, Reynolds Megan, Brown Katelyn, Vingren Jakob L, Hill David W, Bennett Monica, Gilliland Taylor, McShan Evan, Callender Librada, Reynolds Erin, Borunda Nate, Mosolf John, Cates Casey, Jones Alan
Sports Therapy and Research, Baylor Scott and White Health, Frisco, Texas, USA
Sports Therapy and Research, Baylor Scott and White Health, Frisco, Texas, USA.
Br J Sports Med. 2022 Jan;56(2):107-113. doi: 10.1136/bjsports-2020-103758. Epub 2021 Apr 13.
To (1) determine if wearing a cloth face mask significantly affected exercise performance and associated physiological responses, and (2) describe perceptual measures of effort and participants' experiences while wearing a face mask during a maximal treadmill test.
Randomised controlled trial of healthy adults aged 18-29 years. Participants completed two (with and without a cloth face mask) maximal cardiopulmonary exercise tests (CPETs) on a treadmill following the Bruce protocol. Blood pressure, heart rate, oxygen saturation, exertion and shortness of breath were measured. Descriptive data and physical activity history were collected pretrial; perceptions of wearing face masks and experiential data were gathered immediately following the masked trial.
The final sample included 31 adults (age=23.2±3.1 years; 14 women/17 men). Data indicated that wearing a cloth face mask led to a significant reduction in exercise time (-01:39±01:19 min/sec, p<0.001), maximal oxygen consumption (VOmax) (-818±552 mL/min, p<0.001), minute ventilation (-45.2±20.3 L/min), maximal heart rate (-8.4±17.0 beats per minute, p<0.01) and increased dyspnoea (1.7±2.9, p<0.001). Our data also suggest that differences in SpO and rating of perceived exertion existed between the different stages of the CPET as participant's exercise intensity increased. No significant differences were found between conditions after the 7-minute recovery period.
Cloth face masks led to a 14% reduction in exercise time and 29% decrease in VOmax, attributed to perceived discomfort associated with mask-wearing. Compared with no mask, participants reported feeling increasingly short of breath and claustrophobic at higher exercise intensities while wearing a cloth face mask. Coaches, trainers and athletes should consider modifying the frequency, intensity, time and type of exercise when wearing a cloth face mask.
（1）确定佩戴布质口罩是否会显著影响运动表现及相关生理反应，（2）描述在最大强度跑步机测试中佩戴口罩时的主观用力感受及参与者的体验。
对18至29岁的健康成年人进行随机对照试验。参与者按照布鲁斯方案在跑步机上完成两次最大心肺运动试验（CPET）（一次佩戴布质口罩，一次不戴）。测量血压、心率、血氧饱和度、用力程度和呼吸急促情况。在试验前收集描述性数据和体育活动史；在佩戴口罩试验后立即收集对佩戴口罩的感受和体验数据。
最终样本包括31名成年人（年龄=23.2±3.1岁；14名女性/17名男性）。数据表明，佩戴布质口罩导致运动时间显著减少（-01:39±01:19分钟/秒，p<0.001）、最大摄氧量（VOmax）降低（-818±552毫升/分钟，p<0.001）、分钟通气量降低（-45.2±20.3升/分钟）、最大心率降低（-8.4±17.0次/分钟，p<0.01）以及呼吸困难加重（1.7±2.9，p<0.001）。我们的数据还表明，随着参与者运动强度增加，在CPET的不同阶段，血氧饱和度（SpO）和主观用力感觉评分存在差异。在7分钟恢复期后，不同条件之间未发现显著差异。
布质口罩导致运动时间减少14%，VOmax降低29%，这归因于佩戴口罩带来的不适感。与不戴口罩相比，参与者报告在佩戴布质口罩且运动强度较高时感觉呼吸急促和幽闭恐惧症加剧。教练、训练员和运动员在佩戴布质口罩时应考虑调整运动的频率、强度、时间和类型。
