Abstract We aimed to determine the effects of wearing a cloth face mask on cardiorespiratory response, peak oxygen uptake (Vo2), respiratory muscle effort, and exercise ivoryjinelle.com tolerance during incremental exercise.The study had a randomized crossover design: 11 apparently healthy young men performed the Bruce protocol treadmill test in two conditions, wearing a cloth face mask (CFM) and without CFM (CON), in random order.Minute ventilation and oxygen uptake were measured using a mass spectrometry metabolic analyzer; cardiac output (CO) was measured using an impedance CO monitor; and mouth pressure (Pm) was measured and calculated as an integral Pm to assess respiratory muscle effort.Maximal minute ventilation was 13.4 ± 10.
7% lower in the CFM condition than in the CON condition (P < 0.001).The peak Vo2 (52.4 ± 5.6 and 55.
0 ± 5.1 mL/kg/min in CFM and CON, respectively) and CO were not elliot pecan tree for sale significantly different between the two conditions.However, the integral value of Pm was significantly higher (P = 0.02), and the running time to exhaustion was 2.6 ± 3.
2% lower (P = 0.02) in the CFM condition than in the CON condition.Our results suggest that wearing a cloth face mask increased respiratory muscle effort and decreased ventilatory volume in healthy young men; however, Vo2 remained unchanged.Exercise tolerance also decreased slightly.