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30 May 2022: Clinical Research

Effects of Wearing Face Masks on Exercise Capacity and Ventilatory Anaerobic Threshold in Healthy Subjects During the COVID-19 Epidemic

Qiang Lin 1BCDEF , Yuxing Cai 1BC , Changjun Yu 1BC , Wei Gu 2CD , Yan Tan 2CD , Li Wang 2CD , Anliang Chen 1E , Kai Cheng 1F , Ting Meng 3F , Xueping Li 1AG*

DOI: 10.12659/MSM.936069

Med Sci Monit 2022; 28:e936069

Table 4 Comparison of demographic and physiological characteristics, and delta indicators at VAT after subgrouping.

VS Group (n=20)VA Group (n=14)P value*
Age (year)24.3±3.922.2±2.70.095
Male/Female (%)60/4042.9/57.10.324
BMI (kg/m)21.8±3.621.6±4.00.915
FVC (%predicted)85.1±9.888.9±6.10.207
FEV1 (%predicted)86.4±9.687.8±8.60.669
FEV1/FVC (%)87.4±7.085.6±6.10.436
PEF (%predicted)84.9±18.978.4±16.30.306
δHR (bpm)−1.5±7.8−10.6±10.60.007
δVE (l/min)−2.6±2.5−6.0±3.70.004
δVT (l/min)0.1±0.18−0.09±0.270.021
δBF (bpm)−4.1±2.2−3.6±3.40.674
δPETCO (mmHg)1.7±2.7−1.0±2.40.004
Data are presented as mean±SD unless otherwise indicated; Delta index represents the index of exercise test with a mask minus the corresponding index of exercise test without a mask.
* values for group test between the VS group and the VA group.
VAT – ventilatory anaerobic threshold; VS Group – stable VAT group; VA Group – advanced VAT group; BMI – Body Mass Index; FVC – Forced Vital Capacity; FEV1 – Forced Expiratory Volume in 1 second; FEV1/FVC – the percentage of the FVC expired in one second; PEF – Peak Expiratory Flow; HR – heart rate; VE – ventilation per minute; VT – tidal volume; BF – breath frequency; VD/VT – dead space ratio; VE/VCO – carbon dioxide ventilation equivalent; PETCO – end-tidal CO pressure.

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750