Table 2 Cardiopulmonary exercise testing data of patients in the train and test cohorts.

From: Feasibility of the deep learning method for estimating the ventilatory threshold with electrocardiography data

 

Rest

VT

Peak

Train cohort (n = 169)

HR, bpm

75 ± 13

103 ± 18

136 ± 27

SBP, mmHg

118 ± 18*

146 ± 26

167 ± 36*

DBP, mmHg

74 ± 13

80 ± 12

83 ± 17

VO2, mL/kg/min

3.9 ± 0.8

14.0 ± 4.5*

21.8 ± 7.4

WR, W

–

56 ± 26

106 ± 45

RQ

–

0.97 ± 0.70

1.17 ± 0.11

VE-VCO2 slope

30.2 ± 5.8

–

–

Test cohort (n = 91)

HR, bpm

76 ± 13

107 ± 18

138 ± 27

SBP, mmHg

123 ± 20*

151 ± 29

173 ± 41*

DBP, mmHg

77 ± 13

83 ± 13

83 ± 16

VO2, mL/kg/min

4.0 ± 0.8

15.7 ± 5.8*

23.1 ± 8.0

WR, W

–

62 ± 28

114 ± 47

RQ

–

0.91 ± 0.12

1.16 ± 0.12

VE–VCO2 slope

29.7 ± 5.3

–

–

  1. Values are presented as a mean ± standard deviation.
  2. *P < 0.05, difference between the train cohort and the test cohort for each item.
  3. VT ventilatory threshold, HR heart rate, SBP systolic blood pressure, DBP diastolic blood pressure, VO2 oxygen uptake, WR work rate, RQ respiratory quotient, VE–VO2 slope ventilation–carbon dioxide production slope, bpm beats per minute.
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