これから気温が上がり、
運動とマスクを心配する人もいるかもしれません。

METHODS : Twelve healthy subjects underwent three cardiopulmonary exercise tests: without wearing protection mask, 
with surgical 
and with FFP2 mask.

12人の健康な人が、
マスク無し、
サージカルマスク着用、
FFP2マスク着用して、
運動して心肺機能を計測しました。

RESULTS : All the subjects (40.8±12.4 years; 6 males) completed the protocol 
with no adverse event. 
At spirometry, from no mask to surgical to FFP2, 
a progressive reduction of FEV1 and FVC was observed 
(3.94±0.91 l, 3.23±0.81 l, 2.94±0.98 l and 4.70±1.21 l, 3.77±1.02 l, 3.52±1.21 l, 
respectively, p<0.001). 
Rest ventilation, O2 uptake (V̇O2) and CO2 production (VCO2) were progressively lower with a reduction of respiratory rate. 
At peak exercise, subjects revealed a progressively higher Borg scale when wearing surgical and FFP2. Accordingly, at peak exercise, 
V̇O2 (31.0±23.4, 27.5±6.9, 28.2±8.8 ml/kg/min, p=0.001), 
ventilation (92±26, 76±22, 72±21 l, p=0.003), 
respiratory rate (42±8, 38±5, 37±4, p=0.04) and 
tidal volume (2.28±0.72, 2.05±0.60, 1.96±0.65 l, p=0.001) 
were gradually lower. 
We did not observed a significant difference in oxygen saturation.

マスクを着用すると、
呼吸機能は10%程度落ちますが、
酸素飽和度には、有意差はありませんでした。

CONCLUSIONS : Protection masks are associated with significant 
but modest worsening of spirometry and cardiorespiratory parameters at rest and peak exercise. 
The effect is driven by a ventilation reduction due to an increased airflow resistance. However, since exercise ventilatory limitation is far from being reached, 
their use is safe even during maximal exercise, with a slight reduction in performance.

マスク着用によって、若干の心肺機能が落ちますが、
運動換気制限にはほど遠く、
若干の運動パフォーマンスが落ちる程度で、
マスクは、最大限の運動でも安全に使えます。