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Table 3 Gender differences on the CPET parameter changes of wearing surgical masks

From: The impacts of surgical mask in young healthy subjects on cardiopulmonary function and muscle performance: a randomized crossover trial

Parameters

Unit

Male group

Female group

P value

Exercise tolerance and cardiac function

 △VO2/kg (warm up)

ml/min/kg

1.66 Â± 1.32

2.38 Â± 1.27

0.133

 △VO2/kg (peak)

ml/min/kg

4.56 Â± 4.45

4.07 Â± 2.78

0.713

 △VO2/kg (AT)

ml/min/kg

2.31 Â± 2.20

3.94 Â± 2.62

0.072

 △VO2AT/VO2max

%

−2.40 Â± 3.87

−0.13 Â± 3.51

0.098

 △O2/HR (warm up)

ml/kg/beat

0.96 Â± 0.84

1.31 Â± 0.85

0.266

 △O2/HR (peak)

ml/kg/beat

1.41 Â± 1.21

1.12 Â± 0.82

0.442

 △VO2/△WR

ml/(min*watt)

0.94 Â± 1.05

0.96 Â± 1.51

0.962

 △MET (warm up)

–

0.48 Â± 0.38

0.67 Â± 0.35

0.161

 △MET (peak)

–

1.29 Â± 1.22

1.14 Â± 0.89

0.686

Ventilatory function

 △VT (peak)

liter

−0.80 Â± 0.15

−0.62 Â± 0.11

0.001

 △BR% (warm up)

%

0.05 Â± 0.16

0.13 Â± 0.12

0.118

 △BR% (peak)

%

1.94 Â± 0.29

1.22 Â± 0.22

< 0.001

Gas exchange

 △VE (warm up)

liter

3.77 Â± 2.19

4.21 Â± 2.30

0.596

 △VE (peak)

liter

10.43 Â± 14.58

11.49 Â± 7.71

0.801

  1. P value stands for among group comparisons between male group and female group. Significant results are indicated in bold
  2. Abbreviation: VO2/kg (peak) Peak oxygen uptake per kilogram, AT Anaerobic threshold per kilogram, O2/HR Oxygen pulse, MET Metabolic equivalent, â–³VO2/â–³WR Oxygen uptake related to work rate, BR% Breathing reserve in percentage, VE ventilation, VT tidal volume, CPET Cardiopulmonary exercise test, min minute