Sex differences in daily activity intensity and energy expenditure and their relationship to cortisol among BaYaka foragers from the Congo Basin.
Sex differences in daily activity intensity and energy expenditure and their relationship to cortisol among BaYaka foragers from the Congo Basin.
复制标题
刚果盆地巴亚卡采集者日常活动强度和能量消耗的性别差异及其与皮质醇的关系。
DOI：
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复制
发表时间：
2020
影响因子：
2.8
通讯作者：
Lee T. Gettler
中科院分区：
文献类型：
--
作者：
Mallika S. Sarma;A. Boyette;Sheina Lew‐Levy;V. Miegakanda;E. Kilius;D. Samson;Lee T. Gettler
目标
在狩猎采集社会中，能量资源的集中和食物的分享已经被广泛记录在案。人们对日常活动的能量成本如何在这些群体中的个人之间分配，包括在妇女和男子之间分配的了解要少得多。此外，这些活动和成本的代谢生理相关性相对研究不足。
材料和方法
在这里，我们跟踪体力活动，能量消耗（EE），皮质醇生产之间的刚果盆地巴亚卡觅食从事各种日常生活活动（n = 37）。鉴于其在能量动员中的作用，我们通过唾液采样测量了每日皮质醇的总产量和短期皮质醇反应性;我们通过wGT 3X-bt活动记录仪和心率监测仪测量了体力活动水平和总EE。
结果
我们发现，在共同活动地点（森林，花园，房子）工作的可能性没有性别差异。在一天中，女性花在中度到剧烈体力活动（%MVPA）的时间百分比更高，总EE低于男性。雌激素水平较高（千卡/小时）的女性全天产生更大的皮质醇。虽然没有统计学意义，但我们也发现，MVPA百分比较高的个体皮质醇反应性下降幅度较大。
讨论
即使考虑到身体成分的性别差异，巴亚卡妇女的体力活动水平也比男子高，但能量消耗却比男子低。我们的研究结果表明，体力活动的需求和成本的分布是相关的讨论，劳动力是如何划分和社区能源预算在这样的设置形成。
OBJECTIVES
The pooling of energetic resources and food sharing have been widely documented among hunter-gatherer societies. Much less is known about how the energetic costs of daily activities are distributed across individuals in such groups, including between women and men. Moreover, the metabolic physiological correlates of those activities and costs are relatively understudied.
MATERIALS AND METHODS
Here, we tracked physical activity, energy expenditure (EE), and cortisol production among Congo Basin BaYaka foragers engaged in a variety of daily subsistence activities (n = 37). Given its role in energy mobilization, we measured overall daily cortisol production and short-term cortisol reactivity through saliva sampling; we measured physical activity levels and total EE via the wGT3X-bt actigraph and heart rate monitor.
RESULTS
We found that there were no sex differences in likelihood of working in common activity locations (forest, garden, house). Across the day, women spent greater percentage time in moderate-to-vigorous physical activity (%MVPA) and had lower total EE than men. Females with higher EE (kCal/hr) produced greater cortisol throughout the day. Though not statistically significant, we also found that individuals with greater %MVPA had larger decreases in cortisol reactivity.
DISCUSSION
BaYaka women sustained higher levels of physical activity but incurred lower energetic costs than men, even after factoring in sex differences in body composition. Our findings suggest that the distribution of physical activity demands and costs are relevant to discussions regarding how labor is divided and community energy budgets take shape in such settings.
Tsimane 采摘农民在园艺活动期间男性唾液睾酮的增加与年龄无关。
DOI：
10.1016/j.evolhumbehav.2013.06.002
发表时间：
2013
期刊：
Evolution and human behavior : official journal of the Human Behavior and Evolution Society
影响因子：
--
作者：
Trumble,BenjaminC;Cummings,DanielK;O'Connor,KathleenA;Holman,DarrylJ;Smith,EricA;Kaplan,HillardS;Gurven,MichaelD
通讯作者：
Gurven,MichaelD
耐力运动员头发皮质醇浓度升高
影响因子：
3.7
作者：
Skoluda;Dettenborn;Stalder;Kirschbaum
通讯作者：
Kirschbaum