Skip to main content
. 2016 Jan 28;120(9):1047–1058. doi: 10.1152/japplphysiol.00965.2015

Table 2.

Arterial diameters and flow profiles during whole body heat stress followed by single leg cooling and isolated single leg heat stress

Whole body Heat Stress
 Isolated Leg Heat Stress
Baseline Mild Moderate Intense Severe Baseline End
Diameter, cm
    CFA 0.96 ± 0.04 0.95 ± 0.04 0.96 ± 0.04 0.96 ± 0.04 0.96 ± 0.04 0.83 ± 0.01 0.84 ± 0.02
    SFA 0.75 ± 0.03 0.73 ± 0.03 0.76 ± 0.03 0.76 ± 0.03 0.76 ± 0.03 0.67 ± 0.02 0.68 ± 0.02
    PFA 0.56 ± 0.03 0.57 ± 0.02 0.57 ± 0.02 0.58 ± 0.03 0.58 ± 0.03 0.61 ± 0.04 0.61 ± 0.04
Vmean, cm/s
    CFA 6.6 ± 0.6 13.3 ± 2.1* 20.8 ± 1.7* 28.4 ± 2.1* 28.5 ± 2.4* 7.4 ± 0.4 22.6 ± 2.7*
    SFA 6.1 ± 0.3 16.6 ± 2.1* 26.8 ± 1.9* 33.9 ± 2.7* 34.4 ± 2.8* 6.2 ± 0.6 22.6 ± 3.9*
    PFA 6.2 ± 0.6 7.7 ± 1.0* 11.7 ± 0.8* 14.4 ± 1.2* 16.8 ± 1.8* 5.0 ± 0.6 13.6 ± 3.3*
Vant, cm/s
    CFA 10.5 ± 1.0 16.8 ± 1.9* 23.5 ± 0.9* 30.3 ± 1.2* 30.2 ± 1.3* 13.2 ± 0.8 25.3 ± 2.6*
    SFA 10.1 ± 0.8 19.8 ± 1.8* 28.9 ± 0.8* 35.1 ± 1.4* 36.1 ± 1.6* 12.7 ± 1.1 25.9 ± 3.9*
    PFA 7.3 ± 0.7 9.0 ± 1.1* 12.6 ± 0.9* 15.5 ± 1.5* 18.7 ± 1.7* 9.7 ± 1.0 17.0 ± 2.8*
Vret, cm/s
    CFA 3.6 ± 0.5 3.1 ± 0.6 2.7 ± 0.6 0.5 ± 0.7* 0.5 ± 0.4* 5.9 ± 0.8 2.8 ± 0.6*
    SFA 3.9 ± 0.7 2.3 ± 0.3* 1.4 ± 0.2* 0.1 ± 0.6* 0.3 ± 0.3* 6.5 ± 0.7 3.2 ± 0.8*
    PFA 1.1 ± 0.2 1.0 ± 0.3 1.3 ± 0.2 1.1 ± 0.3 1.1 ± 0.4 2.5 ± 0.5 1.8 ± 0.2
SRmean, s−1
    CFA 28.9 ± 3.7 59.8 ± 12.2* 88.5 ± 6.6* 126.0 ± 11.9* 126.3 ± 11.0* 34.9 ± 1.9 107.1 ± 14.5*
    SFA 33.1 ± 2.4 96.4 ± 12.2* 143.4 ± 5.0* 185.5 ± 16.0* 187.4 ± 14.6* 37.8 ± 3.7 138.9 ± 28.8*
    PFA 44.0 ± 5.6 56.9 ± 10.4* 81.6 ± 7.9* 101.3 ± 11.7* 124.1 ± 15.2* 35.7 ± 5.5 98.4 ± 25.0*
SRant, s−1
    CFA 44.0 ± 5.8 72.4 ± 10.7* 99.6 ± 5.7* 128.1 ± 10.4* 128.2 ± 11.0* 62.9 ± 4.3 120.1 ± 14.3*
    SFA 53.7 ± 5.6 108.5 ± 12.9* 150.6 ± 5.0* 185.9 ± 13.9* 188.9 ± 14.7* 77.6 ± 6.7 159.4 ± 28.6*
    PFA 52.0 ± 6.2 64.1 ± 9.3* 91.1 ± 8.2* 109.2 ± 12.2* 132.7 ± 16.3* 66.7 ± 7.1 120.7 ± 22.1*
SRret, s−1
    CFA 15.1 ± 2.6 12.7 ± 2.1 11.2 ± 2.3* 2.1 ± 2.9* 1.9 ± 1.6* 28.0 ± 4.1 13.0 ± 2.8*
    SFA 20.6 ± 4.1 12.1 ± 1.7* 7.2 ± 0.8* 0.5 ± 3.1* 1.5 ± 1.5* 39.8 ± 4.3 19.5 ± 4.7*
    PFA 8.0 ± 1.7 7.1 ± 1.9 9.5 ± 1.9 7.9 ± 2.6 8.6 ± 2.8 18.5 ± 4.7 13.0 ± 2.3
OSI
    CFA 0.25 ± 0.02 0.16 ± 0.04* 0.10 ± 0.02* 0.02 ± 0.02* 0.01 ± 0.01 0.30 ± 0.02 0.10 ± 0.02*
    SFA 0.27 ± 0.02 0.10 ± 0.02* 0.05 ± 0.01* 0.01 ± 0.02* 0.01 ± 0.01 0.34 ± 0.01 0.12 ± 0.03*
    PFA 0.13 ± 0.03 0.12 ± 0.04 0.09 ± 0.02 0.07 ± 0.02* 0.06 ± 0.02* 0.21 ± 0.03 0.10 ± 0.01*

Values are means ± SE for 8 participants. Vmean, time-averaged mean velocity; Vant, time-averaged anterograde velocity; Vret, time-average retrograde velocity; SRmean, mean shear rate; SRant, anterograde shear rate; SRret, retrograde shear rate; OSI, oscillatory shear index.

*

P < 0.05, significantly different from previous condition.