Table 1.

Popliteal artery hemodynamics in nonheated and heated legs before, during, and after sitting for 3 h

Basal Diameter, cmBasal Blood Flow, ml/minHyperemic Blood Flow AUC, arbitrary unitsHyperemic Shear Rate AUC, arbitrary unitsANCOVA-Corrected FMD, %
NonheatedHeatedNonheatedHeatedNonheatedHeatedNonheatedHeatedNonheatedHeated
SupinePre-sit0.59 ± 0.030.59 ± 0.0358.9 ± 11.247.1 ± 5.045,990 ± 8,98642,552 ± 6,72534,259 ± 6,15530,640 ± 4,0186.9 ± 1.57.2 ± 1.5
Sitting0 h0.58 ± 0.020.57 ± 0.0236.2 ± 5.5*79.4 ± 13.7
1 h0.59 ± 0.020.57 ± 0.0232.3 ± 6.7*79.5 ± 16.3
2 h0.57 ± 0.020.57 ± 0.0223.8 ± 3.7*72.8 ± 15.5
3 h0.57 ± 0.020.56 ± 0.0225.1 ± 3.3*64.7 ± 12.4
SupinePost-sit0.58 ± 0.020.59 ± 0.0330.7 ± 4.7*56.2 ± 11.820,715 ± 5,171*28,749 ± 8,25318,281 ± 3,846*16,807 ± 4,531*2.9 ± 1.511.0 ± 1.5
ANOVATime, P = 0.598Time, P = 0.474Time, P = 0.002Time, P < 0.001Time, P = 0.944
Leg, P = 0.648Leg, P = 0.003Leg, P = 0.664Leg, P = 0.485Leg, P = 0.006
Interaction, P = 0.526Interaction, P < 0.001Interaction, P = 0.399Interaction, P = 0.798Interaction, P = 0.011
  • Values are means ± SE. ANCOVA-corrected flow-mediated dilation (FMD) data are adjusted for hyperemic shear rate area under the curve (AUC).

  • * P < 0.05, vs. pre-sit;

  • P < 0.05, between legs.