%0 Journal Article
%A McGrosky, Amanda
%A Swanson, Zane S.
%A Rimbach, Rebecca
%A Bethancourt, Hilary
%A Ndiema, Emmanuel
%A Nzunza, Rosemary
%A Braun, David R.
%A Rosinger, Asher Y.
%A Pontzer, Herman
%+ Lise Meitner Group Technological Primates, Max Planck Institute for Evolutionary Anthropology, Max Planck Society
%T Total daily energy expenditure and elevated water turnover in a small-scale semi-nomadic pastoralist society from Northern Kenya : 
%G eng
%U https://hdl.handle.net/21.11116/0000-000F-0B43-A
%R 10.1080/03014460.2024.2310724
%7 2024-03-04
%D 2024
%8 04.03.2024
%* Review method: peer-reviewed
%X Background: Pastoralists live in challenging environments, which may be accompanied by unique activity, energy, and water requirements. Aim: Few studies have examined whether the demands of pastoralism contribute to differences in total energy expenditure (TEE) and water turnover (WT) compared to other lifestyles. Subjects and methods: Accelerometer-derived physical activity, doubly labelled water-derived TEE and WT, and anthropometric data were collected for 34 semi-nomadic Daasanach adults from three northern Kenyan communities with different levels of pastoralist activity. Daasanach TEEs and WTs were compared to those of other small-scale and industrialised populations. Results: When modelled as a function of fat-free-mass, fat-mass, age, and sex, TEE did not differ between Daasanach communities. Daasanach TEE (1564–4172 kcal/day) was not significantly correlated with activity and 91% of TEEs were within the range expected for individuals from comparison populations. Mean WT did not differ between Daasanach communities; Daasanach absolute (7.54 litres/day men; 7.46 litres/day women), mass-adjusted, and TEE-adjusted WT was higher than most populations worldwide. Conclusions: The similar mass-adjusted TEE of Daasanach and industrialised populations supports the hypothesis that habitual TEE is constrained, with physically demanding lifestyles necessitating trade-offs in energy allocation. Elevated WT in the absence of elevated TEE likely reflects a demanding active lifestyle in a hot, arid climate. © 2024 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
%K doubly labelled water; Energy expenditure; pastoralism; water turnover
%J Annals of Human Biology
%V 51
%N 1
%] 2310724
%@ 0301-44601464-5033