Gracility of the modern<i>Homo sapiens</i>skeleton is the result of decreased biomechanical loading
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- Timothy M. Ryan
- Department of Anthropology,
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- Colin N. Shaw
- Phenotypic Adaptability, Variation and Evolution Research Group,
書誌事項
- 公開日
- 2014-12-22
- 権利情報
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- http://www.pnas.org/site/misc/userlicense.xhtml
- DOI
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- 10.1073/pnas.1418646112
- 公開者
- Proceedings of the National Academy of Sciences
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説明
<jats:title>Significance</jats:title><jats:p>Compared with other primates and earlier human species, contemporary humans possess relatively lightly built skeletons. Previous studies suggest that skeletal gracility results from a lack of physical activity because of increased reliance on culture, is a biomechanical consequence of bipedal locomotion, or reflects systemic physiological differences between modern humans and other primates. We found that bone strength in the hip joint of human foragers is comparable to similarly sized nonhuman primates, and is significantly more robust than sedentary agriculturalists. These results conclusively demonstrate the utility of trabecular bone structure for differentiating activity and mobility patterns among prehistoric hominins and reveal that low levels of physical activity contribute to reduced bone strength, and consequently increased fracture risk, in contemporary human populations.</jats:p>
収録刊行物
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- Proceedings of the National Academy of Sciences
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Proceedings of the National Academy of Sciences 112 (2), 372-377, 2014-12-22
Proceedings of the National Academy of Sciences
