High energy requirements and water throughput of adult Shuar forager-horticulturalists of Amazonian Ecuador

American Journal of Human Biology : the Official Journal of the Human Biology Council
Lauren ChristopherHerman Pontzer

Abstract

We measured total energy expenditure (TEE; kcal/d) and water throughput (L/d) among Shuar forager-horticulturalists from Amazonian Ecuador to compare their daily energy and water demands to adults in other small-scale and industrialized populations. TEE and water throughput were measured using the doubly labeled water method among 15 Shuar adults (eight women, seven men; age range 18-60 years) living in a relatively remote village. We used multiple regression to assess the effects of anthropometric variables (body size, fat free mass, age, and sex) on TEE and water throughput. We also compared Shuar TEE and water throughput to those of other small-scale and industrialized societies. TEE among Shuar adults (men: 4141 ± 645 kcal/d, women: 2536 ± 281 kcal/d) was most strongly correlated with fat free mass. Estimated physical activity levels (PAL) calculated as (TEE/estimated BMR), were greater for men (2.34 ± 0.29) than women (1.83 ± 0.14, P < 0.001). Water throughput was also greater among Shuar men (9.37 ± 2.34 L/d) than women (4.76 ± 0.36 L/d, P < 0.001). Shuar TEE and water throughput were elevated compared to adults in industrialized populations. TEE and PAL of Shuar men are among the highest recorded during normal daily life...Continue Reading

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Citations

Nov 30, 2019·American Journal of Human Biology : the Official Journal of the Human Biology Council·Zane S Swanson, Herman Pontzer
Nov 9, 2019·American Journal of Human Biology : the Official Journal of the Human Biology Council·Amber WutichAlexandra Brewis
Oct 22, 2019·American Journal of Human Biology : the Official Journal of the Human Biology Council·Asher Y Rosinger
Sep 17, 2020·American Journal of Human Biology : the Official Journal of the Human Biology Council·Katharine M N LeeKathryn B H Clancy
Dec 13, 2019·BioEssays : News and Reviews in Molecular, Cellular and Developmental Biology·John R Speakman
Mar 7, 2021·Current Biology : CB·Herman PontzerStephen R Ross
Apr 3, 2021·Evolutionary Anthropology·Cara OcobockAlexandra Niclou
Sep 15, 2021·American Journal of Human Biology : the Official Journal of the Human Biology Council·Cara OcobockHerman Pontzer
Dec 24, 2021·American Journal of Human Biology : the Official Journal of the Human Biology Council·Asher Y RosingerHerman Pontzer

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