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High daily energy expenditure of Tuvan nomadic pastoralists living in an extreme cold environment

Research investigating thermoregulatory energy costs in free-living humans is limited. We determined the total energy expenditure (TEE) of Tuvan pastoralists living in an extreme cold environment and explored the contribution of physical activity and cold-induced thermogenesis. Twelve semi-nomadic p...

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Autores principales: Sellers, Adam J., Khovalyg, Dolaana, Plasqui, Guy, van Marken Lichtenbelt, Wouter
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9684425/
https://www.ncbi.nlm.nih.gov/pubmed/36418413
http://dx.doi.org/10.1038/s41598-022-23975-3
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author Sellers, Adam J.
Khovalyg, Dolaana
Plasqui, Guy
van Marken Lichtenbelt, Wouter
author_facet Sellers, Adam J.
Khovalyg, Dolaana
Plasqui, Guy
van Marken Lichtenbelt, Wouter
author_sort Sellers, Adam J.
collection PubMed
description Research investigating thermoregulatory energy costs in free-living humans is limited. We determined the total energy expenditure (TEE) of Tuvan pastoralists living in an extreme cold environment and explored the contribution of physical activity and cold-induced thermogenesis. Twelve semi-nomadic pastoralists (47 ± 8 years, 64 ± 8 kg) living under traditional circumstances, in Tuva, south-central Siberia, Russia, were observed during two consecutive 6-day periods in winter. TEE was measured via the doubly labelled water technique. Skin and ambient temperatures, and physical activity were continuously monitored. The outdoor temperature during the observation period was − 27.4 ± 5.4 °C. During the daytime, the participants were exposed to ambient temperatures below 0 °C for 297 ± 131 min/day. The Tuvan pastoralists were more physically active compared to western populations (609 ± 90 min/day of light, moderate, and vigorous physical activity). In addition, TEE was 13.49 ± 1.33 MJ/day (3224 ± 318 kcal/day), which was significantly larger by 17% and 31% than predicted by body mass, and fat-free mass, respectively. Our research suggests the daily cold exposure combined with high levels of physical activity contributed to the elevated TEE. Future research should reconsider the assumption that energy costs due to thermoregulation are negligible in free-living humans.
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spelling pubmed-96844252022-11-25 High daily energy expenditure of Tuvan nomadic pastoralists living in an extreme cold environment Sellers, Adam J. Khovalyg, Dolaana Plasqui, Guy van Marken Lichtenbelt, Wouter Sci Rep Article Research investigating thermoregulatory energy costs in free-living humans is limited. We determined the total energy expenditure (TEE) of Tuvan pastoralists living in an extreme cold environment and explored the contribution of physical activity and cold-induced thermogenesis. Twelve semi-nomadic pastoralists (47 ± 8 years, 64 ± 8 kg) living under traditional circumstances, in Tuva, south-central Siberia, Russia, were observed during two consecutive 6-day periods in winter. TEE was measured via the doubly labelled water technique. Skin and ambient temperatures, and physical activity were continuously monitored. The outdoor temperature during the observation period was − 27.4 ± 5.4 °C. During the daytime, the participants were exposed to ambient temperatures below 0 °C for 297 ± 131 min/day. The Tuvan pastoralists were more physically active compared to western populations (609 ± 90 min/day of light, moderate, and vigorous physical activity). In addition, TEE was 13.49 ± 1.33 MJ/day (3224 ± 318 kcal/day), which was significantly larger by 17% and 31% than predicted by body mass, and fat-free mass, respectively. Our research suggests the daily cold exposure combined with high levels of physical activity contributed to the elevated TEE. Future research should reconsider the assumption that energy costs due to thermoregulation are negligible in free-living humans. Nature Publishing Group UK 2022-11-22 /pmc/articles/PMC9684425/ /pubmed/36418413 http://dx.doi.org/10.1038/s41598-022-23975-3 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Sellers, Adam J.
Khovalyg, Dolaana
Plasqui, Guy
van Marken Lichtenbelt, Wouter
High daily energy expenditure of Tuvan nomadic pastoralists living in an extreme cold environment
title High daily energy expenditure of Tuvan nomadic pastoralists living in an extreme cold environment
title_full High daily energy expenditure of Tuvan nomadic pastoralists living in an extreme cold environment
title_fullStr High daily energy expenditure of Tuvan nomadic pastoralists living in an extreme cold environment
title_full_unstemmed High daily energy expenditure of Tuvan nomadic pastoralists living in an extreme cold environment
title_short High daily energy expenditure of Tuvan nomadic pastoralists living in an extreme cold environment
title_sort high daily energy expenditure of tuvan nomadic pastoralists living in an extreme cold environment
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9684425/
https://www.ncbi.nlm.nih.gov/pubmed/36418413
http://dx.doi.org/10.1038/s41598-022-23975-3
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