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Table 3 Association of flow-mediated dilation (assessed as post-occlusion brachial artery diameter corrected for baseline diameter) and nitroglycerin-mediated dilation with exercise capacity parameters in non-smokers and ex-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

1027.0 (777.0; 1276.9)

357.0 (223.6; 490.4)

3.7 (2.4; 5.0)

-3.3 (-5.3; -1.4)

-3.1 (-4.8; -1.4)

987.9 (694.1; 1281.7)

353.0 (189.4; 516.6)

3.5 (2.0; 5.0)

-3.5 (-5.8; -1.2)

-2.8 (-4.9; -0.8)

   Fully adjusted

-33.8 (-214.9; 147.4)

-18.7 (-141.6; 104.3)

-0.4 (-1.5; 0.7)

-0.3 (-2.2; 1.6)

-0.5 (-2.2; 1.2)

78.9 (-140.2; 297.9)

57.8 (-96.9; 212.5)

-0.1 (-1.3; 1.1)

-1.1 (-3.5; 1.2)

-0.8 (-2.8; 1.2)

NMD

          

   Adjusted for baseline BAD

914.3 (745.4; 1083.2)

285.6 (194.3; 377.0)

3.2 (2.3; 4.2)

-2.0 (-3.3; -0.7)

-1.6 (-2.7; -0.4)

801.6 (588.6; 1014.6)

181.3 (61.4; 301.3)

3.4 (2.3; 4.5)

-1.8 (-3.4; -0.1)

-1.0 (-2.5; 0.5)

   Fully adjusted

135.7 (10.6; 260.8)

2.5 (-82.7; 87.7)

0.1 (-0.6; 0.9)

0.5 (-0.8; 1.8)

0.5 (-0.6; 1.7)

88.9 (-69.5; 247.5)

-79.8 (-192.1; 32.5)

0.3 (-0.6; 1.2)

0.2 (-1.5; 1.9)

0.8 (-0.7; 2.3)

  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; BAD: post-occlusion brachial artery diameter.