| Brief communication: Three-dimensional motion analysis of hindlimb during brachiation in a white-handed gibbon (Hylobates lar). | |
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MedLine Citation:
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PMID: 20607695 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In brachiating gibbons, it is thought that there is little movement in the hindlimb joints and that lateral body movement is quite limited. These hypotheses are based on naked-eye observations, and no quantitative motion analyses of the hindlimbs have been reported. This study quantitatively describes the three-dimensional movements of the lower trunk and distal thigh during continuous-contact brachiation in a white-handed gibbon (Hylobates lar) to evaluate the roles of the trunk and hindlimb. The results revealed that the lower trunk moved both laterally and vertically. The lateral movement of the lower trunk resulted from the lateral inclination of the trunk by gravity. The vertical movement of the trunk was converted into forward velocity, indicating an exchange between potential and kinetic energy. We also observed flexion and extension of the hip, although the excursion was within a small range. In addition, the lateral movement of the hindlimb in thedirection opposite to that of trunk movement helped to reduce the lateral sway of the body. These results suggest that during continuous-contact brachiation a gibbon uses hip flexion and extension motions to increase the kinetic energy in the swing. In addition, fine motions of the hip may restrict the lateral sway of the center of body mass. |
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Authors:
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Kenji Oka; Eishi Hirasaki; Yohko Hirokawa; Yoshihiko Nakano; Hiroo Kumakura |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: American journal of physical anthropology Volume: 142 ISSN: 1096-8644 ISO Abbreviation: Am. J. Phys. Anthropol. Publication Date: 2010 Aug |
Date Detail:
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Created Date: 2010-07-12 Completed Date: 2010-10-21 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0400654 Medline TA: Am J Phys Anthropol Country: United States |
Other Details:
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Languages: eng Pagination: 650-4 Citation Subset: IM |
Copyright Information:
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Copyright 2010 Wiley-Liss, Inc. |
Affiliation:
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Laboratory of Biological Anthropology, Graduate School of Human Sciences, Osaka University, Suita, Osaka 565-0871, Japan. oka-k@hus.osaka-u.ac.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Arm / physiology Behavior, Animal / physiology Biomechanics / physiology* Gait / physiology* Hindlimb / physiology* Hip / physiology Hylobates / physiology* Image Processing, Computer-Assisted / methods* Imaging, Three-Dimensional Locomotion / physiology* |
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