Age-independent increases in male salivary testosterone during horticultural activity among Tsimane forager-farmers.
Age-independent increases in male salivary testosterone during horticultural activity among Tsimane forager-farmers.
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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
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Gurven,MichaelD
中科院分区：
文献类型：
--
作者：
Trumble,BenjaminC;Cummings,DanielK;O'Connor,KathleenA;Holman,DarrylJ;Smith,EricA;Kaplan,HillardS;Gurven,MichaelD
在许多脊椎动物物种中，睾酮在介导雄性生殖权衡、增加肌肉和影响雄-雄竞争和交配努力所必需的行为方面起着重要作用。在人类中，睾丸激素也可能在促进男性提供后代方面发挥关键作用，因为肌肉和神经肌肉性能受到睾丸激素急剧变化的深刻影响。本研究探讨了63 Tsimane男性之间的唾液睾酮的急性变化，年龄从16岁到80岁（平均38.2），在一个小时的砍树，而清除园艺地块。生活在玻利维亚亚马逊地区的Tsimane觅食园艺家经历了与粮食生产相关的高能量消耗，寄生虫和病原体水平高，并且与年龄匹配的美国男性相比，基线唾液睾酮水平显着降低。控制BMI和标本采集时间的混合效应模型显示，砍树一小时后，唾液睾酮增加（p< 0.001），相当于增加48.6%。年龄对基线（p= 0.656）或睾酮变化（p= 0.530）没有影响;自我报告的疾病没有改变睾酮变化（p= 0.488）。将这些结果与同一人群中竞争性足球锦标赛期间睾酮的相对变化进行比较，发现资源生产（树木砍伐）后睾酮的相对变化比竞争（足球）大。这些研究结果强调了超越单维关注睾酮和男性-男性攻击性变化的重要性，以研究睾酮-行为相互作用在其他男性健身相关活动中的重要性。剧烈增加睾酮在肌肉密集型园艺食品生产可能有助于男性生产力和供应。
Testosterone plays an important role in mediating male reproductive trade-offs in many vertebrate species, augmenting muscle and influencing behavior necessary for male–male competition and mating-effort. Among humans, testosterone may also play a key role in facilitating male provisioning of offspring as muscular and neuromuscular performance is deeply influenced by acute changes in testosterone. This study examines acute changes in salivary testosterone among 63 Tsimane men ranging in age from 16 to 80 (mean 38.2) years during one-hour bouts of tree-chopping while clearing horticultural plots. The Tsimane forager-horticulturalists living in the Bolivian Amazon experience high energy expenditure associated with food production, have high levels of parasites and pathogens, and display significantly lower baseline salivary testosterone than age-matched US males. Mixed-effects models controlling for BMI and time of specimen collection reveal increased salivary testosterone (p< 0.001) equivalent to a 48.6% rise, after one hour of tree chopping. Age had no effect on baseline (p= 0.656) or change in testosterone (p= 0.530); self-reported illness did not modify testosterone change (p= 0.488). A comparison of these results to the relative change in testosterone during a competitive soccer tournament in the same population reveals larger relative changes in testosterone following resource production (tree chopping), compared to competition (soccer). These findings highlight the importance of moving beyond a unidimensional focus on changes in testosterone and male–male aggression to investigate the importance of testosterone–behavior interactions across additional male fitness-related activities. Acutely increased testosterone during muscularly intensive horticultural food production may facilitate male productivity and provisioning.
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DOI：
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期刊：
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