Date of download: 7/8/2016 Copyright © ASME. All rights reserved. From: Lumped Parameter Thermal Model for the Study of Vascular Reactivity in the Fingertip J Biomech Eng. 2008;130(3): doi: / Model for blood perfusion during hyperemia. Stage 1 corresponds to vessel occlusion, and starts with base line value (ωbo). Occlusion lasts during a time tocc, and blood volume exponentially falls during this stage. Stage II or reperfusion has two components: hyperemia and return to normal value. Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. From: Lumped Parameter Thermal Model for the Study of Vascular Reactivity in the Fingertip J Biomech Eng. 2008;130(3): doi: / Effect of variation in the heat transfer coefficient hair over the fingertip temperature during DTM test calculated using the mathematical model. The remaining parameters take the values indicated in Table. Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. From: Lumped Parameter Thermal Model for the Study of Vascular Reactivity in the Fingertip J Biomech Eng. 2008;130(3): doi: / Effect of variation in ambient temperature Tair over the fingertip temperature during DTM test, calculated using the mathematical model. The remaining parameters take the values indicated in Table. Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. From: Lumped Parameter Thermal Model for the Study of Vascular Reactivity in the Fingertip J Biomech Eng. 2008;130(3): doi: / Effect of variation in body temperature TA over the fingertip temperature calculated using the zero order model during vascular reactivity tests. The remaining parameters take the values indicated in Table. The plots are shown after arterial occlusion is released (t>3min). Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. From: Lumped Parameter Thermal Model for the Study of Vascular Reactivity in the Fingertip J Biomech Eng. 2008;130(3): doi: / Variation on the fingertip temperature during the VR test due to alterations in the initial temperature Ti. Calculations performed using the mathematical model and maintaining the remaining parameters constant as indicated in Table. Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. From: Lumped Parameter Thermal Model for the Study of Vascular Reactivity in the Fingertip J Biomech Eng. 2008;130(3): doi: / Temporal changes in cuff inflation pressure during arterial occlusion (200mmHg) and venous occlusion (60mmHg) performed during hyperemic VOP or dynamic measurement or hyperemic perfusion during experiments performed in healthy subjects. Each inflation provides an average measurement of the perfusion during the inflation time. Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. From: Lumped Parameter Thermal Model for the Study of Vascular Reactivity in the Fingertip J Biomech Eng. 2008;130(3): doi: / Plots indicating percentile change in strain gauge length per unit time (minute) x(t) in the finger after arterial occlusion, changes measured using VOP on different subjects. Values for the exponential fit are given in Table. Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. From: Lumped Parameter Thermal Model for the Study of Vascular Reactivity in the Fingertip J Biomech Eng. 2008;130(3): doi: / Comparison of measured and calculated finger temperature changes during DTM for Subjects 1, 3, 4, and 8. Calculations correspond to solutions using the zero order model using the temporal variations in blood perfusion during Stage IIB or hyperemia measured experimentally using VOP. In these plots, the maximum and minimum temperatures are calculated using the upper and lower values of the concerned parameters. Figure Legend:

Date of download: 7/8/2016 Copyright © ASME. All rights reserved. From: Lumped Parameter Thermal Model for the Study of Vascular Reactivity in the Fingertip J Biomech Eng. 2008;130(3): doi: / Comparison of finger temperature measured during DTM with the temperature measured when DTM and HVOP are performed simultaneously for Subjects 1, 3, 4, and 8. The temperature plot is normalized using the average baseline temperature before the start of occlusion. A drop in finger temperature can be observed when DTM and HVOP are simultaneously performed. Figure Legend: