Cited by 223Thermoregulation and physiological responsesAdipose Tissue and MetabolismInfrared Thermography in Medicine

Adiposity and human regional body temperature

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Savastano, David M, Gorbach, Alexander M, Eden, Henry S, Brady, Sheila M, Reynolds, James C, Yanovski, Jack A·2009·The American Journal of Clinical Nutrition

Abstract

Background Human obesity is associated with increased heat production; however, subcutaneous adipose tissue provides an insulating layer that impedes heat loss. To maintain normothermia, therefore, obese individuals must increase their heat dissipation.Objective The objective was to test the hypothesis that temperature in a heat-dissipating region of the hand is elevated in obese adults.Design Obese [body mass index (in kg/m(2)) > or = 30] and normal-weight (NW; body mass index = 18-25) adults were studied under thermoneutral conditions at rest. Core body temperature was measured by using ingested telemetric capsules. The temperatures of the third fingernail bed of the right hand and of abdominal skin from an area 1.5 cm inferior to the umbilicus were determined by using infrared thermography. Abdominal skin temperatures were also measured via adhesive thermistors that were placed over a prominent skin-surface blood vessel and over an adjacent nonvessel location. The groups were compared by analysis of covariance with age, sex, race, and room temperature as covariates.Results Core temperature did not differ significantly between the 23 obese and 13 NW participants (P = 0.74). However, infrared thermography-measured fingernail-bed temperature was significantly higher in obese subjects than in NW subjects (33.9 +/- 0.7 degrees C compared with 28.6 +/- 0.9 degrees C; P < 0.001). Conversely, infrared thermography-measured abdominal skin temperature was significantly lower in obese subjects than in NW subjects (31.8 +/- 0.2 degrees C compared with 32.8 +/- 0.3 degrees C; P = 0.02). Nonvessel abdominal skin temperatures measured by thermistors were also lower in obese subjects (P = 0.04).Conclusions Greater subcutaneous abdominal adipose tissue in obese adults may provide a significant insulating layer that blunts abdominal heat transfer. Augmented heat release from the hands may offset heat retention in areas of the body with greater adiposity, thereby helping to maintain normothermia in obesity. This trial was registered at clinicaltrials.gov as NCT00266500.

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Crossref · 10.3945/ajcn.2009.27567

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  • Compared to lean individuals, those with excess adiposity have differences in body heat transfer and release that may reduce sensitivity to cold temperatures.

    “Furthermore, compared to individuals who are lean, individuals with excess adiposity have differences in body heat transfer and release that may lessen their sensitivity to cold temperatures (Savastano et al., 2009).”

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Authors
Savastano, D. M., Gorbach, A. M., Eden, H. S., Brady, S. M., Reynolds, J. C., & Yanovski, J. A.
Affiliations
National Institutes of Health (US)
Corresponding author
Yanovski, Jack A
Venue
The American Journal of Clinical Nutrition
Publisher
Elsevier BV
Published
2009-11
Volume
90
Issue
5
Pages
1124-1131
ISSN
0002-9165 (ISSN-L)
OpenAlex
W1974792437
Cited by
223
References
44
Citations by year
2026: 13 · 2025: 15 · 2024: 8 · 2023: 12 · 2022: 22 · 2021: 10 · 2020: 16 · 2019: 16 · 2018: 11 · 2017: 16 · 2016: 19 · 2015: 12 · 2014: 12 · 2013: 12 · 2012: 15
FWCI
6.43
Type
journal article
Language
en
Open access
Locations
  • American Journal of Clinical Nutrition (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • U.S. Department of Health and Human Services
  • National Institutes of Health
  • National Institute of Biomedical Imaging and Bioengineering (Z01EB000032)
  • National Institute of Child Health and Human Development
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development
Topics
  • Health Sciences › Medicine › Physiology › Thermoregulation and physiological responses
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Infrared Thermography in Medicine
Keywords
obesity, subcutaneous adipose tissue, thermal insulation, heat dissipation, hand skin temperature, thermoregulation, normothermia, thermoneutrality, body mass index
MeSH terms
Abdomen, Adipose Tissue, Adolescent, Adult, Aged, Body Temperature, Body Temperature Regulation, Body Weight, Female, Hand, Humans, Male, Menstrual Cycle, Middle Aged, Obesity, Reference Values, Thermography, Body Mass Index, Postmenopause, Adiposity, Young Adult

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