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Table 2 Association of flow-mediated dilation (assessed as post-occlusion brachial artery diameter corrected for baseline diameter) and nitroglycerin-mediated dilation with gas exchange and exercise capacity parameters in current smokers.

From: Peripheral endothelial dysfunction is associated with gas exchange inefficiency in smokers

 

Overall population

Healthy population

 

Peak VO2

VO2@AT

O2 pulse

VE vs. VCO2 slope

VE/VCO2@AT

Peak VO2

VO2@AT

O2 pulse

VE vs. VCO2 slope

VE/VCO2@AT

 

β coefficient (95% CI)

β coefficient (95% CI)

β coefficient (95% CI)

β coefficient (95% CI)

β coefficient (95% CI)

β coefficient (95% CI)

β coefficient (95% CI)

β coefficient (95% CI)

β coefficient (95% CI)

β coefficient (95% CI)

FMD

          

   Adjusted for baseline BAD

650.0 (243.5; 1056.5)

288.7 (89.8; 487.5)

2.7 (0.4; 5.0)

-5.2 (-8.5; -1.8)

-5.2 (-8.5; -1.8)

866.8 (426.7; 1306.9)

314.2 (90.5; 538.0)

3.1 (0.5; 5.6)

-7.0 (-10.6; -3.3)

-6.5 (-10.2; -2.8)

   Fully adjusted

35.2 (-261.2; 331.6)

57.0 (-117.9; 231.9)

-0.1 (-2.0; 1.8)

-3.9 (-7.1; -0.60)

-3.6 (-6.8; -0.4)

109.0 (-227.6; 445.6)

59.1 (-147.2; 265.4)

-0.2 (-2.3; 1.9)

-5.3 (-8.9; -1.7)

-4.6 (-8.2; -1.0)

NMD

          

   Adjusted for baseline BAD

448.6 (180.1; 717.1)

93.7 (-38.4; 225.8)

1.0 (-0.5; 2.6)

-0.8 (-2.9; 1.3)

-1.4 (-3.4; 0.6)

349.3 (52.0; 646.6)

50.9 (-98.0; 199.9)

0.6 (-1.1; 2.3)

-0.5 (-2.9; 1.8)

-1.1 (-3.4; 1.2)

   Fully adjusted

-2.1 (-203.1; 199.0)

-19.2 (-138.1; 99.6)

-0.6 (-1.9; 0.7)

0.6 (-1.5; 2.7)

-0.2 (-2.2; 1.8)

-17.3 (-241.4; 206.7)

-27.9 (-166.1; 110.2)

-0.7 (-2.1; 0.7)

0.9 (-1.4; 3.2)

0.2 (-2.0; 2.4)

  1. Age to CPET, endothelial function determination and baseline brachial artery diameter, height and weight.
  2. Peak VO2: peak oxygen uptake; VO2@AT: oxygen uptake at anaerobic threshold; O2 pulse: peak oxygen pulse; VE vs. VCO2 slope: ventilation to carbon dioxide output; VE/VCO2@AT: ventilatory equivalent at anaerobic threshold; and BAD: post-occlusion brachial artery diameter.