Three-dimensional interactions of mean body and local skin temperatures in the control of hand and foot blood flows

Joanne N. Caldwell, Mayumi Matsuda-Nakamura, Nigel A S Taylor

Research output: Contribution to journalArticleResearchpeer-review

22 Citations (Scopus)

Abstract

PURPOSE: Much is known about the control of blood flow, yet gaps remain concerning the interactions of deep-body and peripheral thermal feedback. In this experiment, changes in the vascular tone of the hands and feet were mapped to demonstrate the separate and combined influences of mean body and local skin temperature changes. METHODS: Eight males participated in three trials. Three pre-experimental conditions were established via water immersion (oesophageal temperatures: 36.1, 37.0, 38.5 degrees C), with core and mean skin temperatures then clamped (water-perfusion garment) whilst five thermal treatments were applied to the right hand and left foot (5, 15, 25, 33, 40 degrees C). This yielded 15 thermal combinations under which hand and foot blood flows were measured (displacement plethysmography). RESULTS: Lower volume-specific blood flows were observed at the foot for almost all temperature combinations. When thermoneutral and moderately hyperthermic, the cutaneous thermosensitivity of the hand was significantly greater: thermoneutral: 0.2 vs. 0.1 (foot) mL 100 mL(-1) min(-1) degrees C(-1) (P <0.05); moderate hyperthermia: 0.4 vs. 0.2 (foot) mL 100 mL(-1) min(-1) degrees C(-1) (P <0.05). The hand was 13 times more responsive to core temperature elevations than an equivalent local skin temperature change. For the foot, this thermosensitivity differed by a factor of 26. CONCLUSION: These observations identified the hands as heat radiators, with the feet resisting heat loss, and reinforce the dominance of central thermal feedback, particularly in controlling foot blood flow. However, thermosensitivity to local skin temperature changes was highly plastic, site-specific and dictated by thermal and regional variations in vaso- and venoconstrictor tone.
Original languageEnglish
Pages (from-to)1679-1689
Number of pages11
JournalEuropean Journal of Applied Physiology
Volume114
Issue number8
DOIs
Publication statusPublished - Aug 2014
Externally publishedYes

Cite this

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title = "Three-dimensional interactions of mean body and local skin temperatures in the control of hand and foot blood flows",
abstract = "PURPOSE: Much is known about the control of blood flow, yet gaps remain concerning the interactions of deep-body and peripheral thermal feedback. In this experiment, changes in the vascular tone of the hands and feet were mapped to demonstrate the separate and combined influences of mean body and local skin temperature changes. METHODS: Eight males participated in three trials. Three pre-experimental conditions were established via water immersion (oesophageal temperatures: 36.1, 37.0, 38.5 degrees C), with core and mean skin temperatures then clamped (water-perfusion garment) whilst five thermal treatments were applied to the right hand and left foot (5, 15, 25, 33, 40 degrees C). This yielded 15 thermal combinations under which hand and foot blood flows were measured (displacement plethysmography). RESULTS: Lower volume-specific blood flows were observed at the foot for almost all temperature combinations. When thermoneutral and moderately hyperthermic, the cutaneous thermosensitivity of the hand was significantly greater: thermoneutral: 0.2 vs. 0.1 (foot) mL 100 mL(-1) min(-1) degrees C(-1) (P <0.05); moderate hyperthermia: 0.4 vs. 0.2 (foot) mL 100 mL(-1) min(-1) degrees C(-1) (P <0.05). The hand was 13 times more responsive to core temperature elevations than an equivalent local skin temperature change. For the foot, this thermosensitivity differed by a factor of 26. CONCLUSION: These observations identified the hands as heat radiators, with the feet resisting heat loss, and reinforce the dominance of central thermal feedback, particularly in controlling foot blood flow. However, thermosensitivity to local skin temperature changes was highly plastic, site-specific and dictated by thermal and regional variations in vaso- and venoconstrictor tone.",
author = "Caldwell, {Joanne N.} and Mayumi Matsuda-Nakamura and Taylor, {Nigel A S}",
year = "2014",
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Three-dimensional interactions of mean body and local skin temperatures in the control of hand and foot blood flows. / Caldwell, Joanne N.; Matsuda-Nakamura, Mayumi; Taylor, Nigel A S.

In: European Journal of Applied Physiology, Vol. 114, No. 8, 08.2014, p. 1679-1689.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Three-dimensional interactions of mean body and local skin temperatures in the control of hand and foot blood flows

AU - Caldwell, Joanne N.

AU - Matsuda-Nakamura, Mayumi

AU - Taylor, Nigel A S

PY - 2014/8

Y1 - 2014/8

N2 - PURPOSE: Much is known about the control of blood flow, yet gaps remain concerning the interactions of deep-body and peripheral thermal feedback. In this experiment, changes in the vascular tone of the hands and feet were mapped to demonstrate the separate and combined influences of mean body and local skin temperature changes. METHODS: Eight males participated in three trials. Three pre-experimental conditions were established via water immersion (oesophageal temperatures: 36.1, 37.0, 38.5 degrees C), with core and mean skin temperatures then clamped (water-perfusion garment) whilst five thermal treatments were applied to the right hand and left foot (5, 15, 25, 33, 40 degrees C). This yielded 15 thermal combinations under which hand and foot blood flows were measured (displacement plethysmography). RESULTS: Lower volume-specific blood flows were observed at the foot for almost all temperature combinations. When thermoneutral and moderately hyperthermic, the cutaneous thermosensitivity of the hand was significantly greater: thermoneutral: 0.2 vs. 0.1 (foot) mL 100 mL(-1) min(-1) degrees C(-1) (P <0.05); moderate hyperthermia: 0.4 vs. 0.2 (foot) mL 100 mL(-1) min(-1) degrees C(-1) (P <0.05). The hand was 13 times more responsive to core temperature elevations than an equivalent local skin temperature change. For the foot, this thermosensitivity differed by a factor of 26. CONCLUSION: These observations identified the hands as heat radiators, with the feet resisting heat loss, and reinforce the dominance of central thermal feedback, particularly in controlling foot blood flow. However, thermosensitivity to local skin temperature changes was highly plastic, site-specific and dictated by thermal and regional variations in vaso- and venoconstrictor tone.

AB - PURPOSE: Much is known about the control of blood flow, yet gaps remain concerning the interactions of deep-body and peripheral thermal feedback. In this experiment, changes in the vascular tone of the hands and feet were mapped to demonstrate the separate and combined influences of mean body and local skin temperature changes. METHODS: Eight males participated in three trials. Three pre-experimental conditions were established via water immersion (oesophageal temperatures: 36.1, 37.0, 38.5 degrees C), with core and mean skin temperatures then clamped (water-perfusion garment) whilst five thermal treatments were applied to the right hand and left foot (5, 15, 25, 33, 40 degrees C). This yielded 15 thermal combinations under which hand and foot blood flows were measured (displacement plethysmography). RESULTS: Lower volume-specific blood flows were observed at the foot for almost all temperature combinations. When thermoneutral and moderately hyperthermic, the cutaneous thermosensitivity of the hand was significantly greater: thermoneutral: 0.2 vs. 0.1 (foot) mL 100 mL(-1) min(-1) degrees C(-1) (P <0.05); moderate hyperthermia: 0.4 vs. 0.2 (foot) mL 100 mL(-1) min(-1) degrees C(-1) (P <0.05). The hand was 13 times more responsive to core temperature elevations than an equivalent local skin temperature change. For the foot, this thermosensitivity differed by a factor of 26. CONCLUSION: These observations identified the hands as heat radiators, with the feet resisting heat loss, and reinforce the dominance of central thermal feedback, particularly in controlling foot blood flow. However, thermosensitivity to local skin temperature changes was highly plastic, site-specific and dictated by thermal and regional variations in vaso- and venoconstrictor tone.

UR - http://www.ncbi.nlm.nih.gov/pubmed/24819447

U2 - 10.1007/s00421-014-2894-x

DO - 10.1007/s00421-014-2894-x

M3 - Article

VL - 114

SP - 1679

EP - 1689

JO - European Journal of Applied Physiology

JF - European Journal of Applied Physiology

SN - 1439-6319

IS - 8

ER -