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Is there an influence of modern life style on skeletal build?

  • Objectives: Modern human life style has led to significant decrease in everyday physical activity and bipedal locomotion. It has previously been shown that skeletal robustness (relative elbow breadth) is associated with daily step counts. The aim of the study was to investigate whether also other skeletal measures, particularly pelvic breadth may have changed in recent decades. Methods: We re-analyzed elbow breadth, pelvic breadth (bicristal), and thoracic depth and breadth, of up to 28,975 healthy females and 28,288 healthy males aged 3-18 years from cross-sectional anthropological surveys performed between 1980 and 2012 by the Universities of Potsdam and Berlin, Germany. Results: Relative elbow breadth (Frame index) significantly decreased in both sexes since 1980 (< 0.001). The trend toward slighter built was even more pronounced in absolute and relative pelvic breadth. In contrast, equivalent changes of parts of the skeletal system that are not involved in bipedal locomotion such as thoracic breadth, thoracic depth, and theObjectives: Modern human life style has led to significant decrease in everyday physical activity and bipedal locomotion. It has previously been shown that skeletal robustness (relative elbow breadth) is associated with daily step counts. The aim of the study was to investigate whether also other skeletal measures, particularly pelvic breadth may have changed in recent decades. Methods: We re-analyzed elbow breadth, pelvic breadth (bicristal), and thoracic depth and breadth, of up to 28,975 healthy females and 28,288 healthy males aged 3-18 years from cross-sectional anthropological surveys performed between 1980 and 2012 by the Universities of Potsdam and Berlin, Germany. Results: Relative elbow breadth (Frame index) significantly decreased in both sexes since 1980 (< 0.001). The trend toward slighter built was even more pronounced in absolute and relative pelvic breadth. In contrast, equivalent changes of parts of the skeletal system that are not involved in bipedal locomotion such as thoracic breadth, thoracic depth, and the thoracic index were absent. Conclusions: The present investigation confirms the decline in relative elbow breadth in recent decades. Analogue, but even more pronounced changes were detected in pelvic breadth that coincides with the modern decline in upright locomotion. The findings underscore the phenotypic plasticity of humans while adapting to new environmental conditions. (C) 2014Wiley Periodicals, Inc.show moreshow less

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Metadaten
Author details:Christiane SchefflerORCiDGND, Michael HermanussenORCiDGND
DOI:https://doi.org/10.1002/ajhb.22561
ISSN:1042-0533
ISSN:1520-6300
Pubmed ID:https://pubmed.ncbi.nlm.nih.gov/24846748
Title of parent work (English):American journal of human biology : the official journal of the Human Biology Council
Publisher:Wiley-Blackwell
Place of publishing:Hoboken
Publication type:Article
Language:English
Year of first publication:2014
Publication year:2014
Release date:2017/03/27
Volume:26
Issue:5
Number of pages:8
First page:590
Last Page:597
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Biochemie und Biologie
Peer review:Referiert
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