Document Detail


Lumbar ontogenetic allometry and dimorphism in humans. A case for comparison between interspecific and intraspecific scaling.
MedLine Citation:
PMID:  16982475     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The ontogenetic allometry of the lumbar region of 1913 humans (1228 females and 685 males), ranging from newborn to 21-year-old individuals, was studied by means of length, width, projected surface area and bone mineral density of the segment L2 - L4, obtained by dual X-ray absorptiometry (DXA). All these parameters were regressed to body mass and height of the individuals, considered alternatively as the independent variable. Firstly, we addressed the comparison between the results obtained on both sexes in order to elucidate whether ontogenetic differences existed. Length of the segments increased significantly faster in females than in males, independently whether the regression was made against body mass or height, while in both types of regression width scaled in males faster than in females. Regarding bone mineral density, although males increased bone mineral density faster than females, slope differences were not significant. However, y-interception was significantly higher in females than in males when bone mineral density was regressed to body mass. Results on length and width are compared with others from previous research on allometry. Finally, global results are discussed as regards the slope predictions for interspecific scaling.
Authors:
E Valverde; A Casinos; C Alba-Fernández; L Del Río
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  European journal of morphology     Volume:  42     ISSN:  0924-3860     ISO Abbreviation:  Eur J Morphol     Publication Date:    2005 Oct-Dec
Date Detail:
Created Date:  2006-09-19     Completed Date:  2006-11-14     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  9011462     Medline TA:  Eur J Morphol     Country:  England    
Other Details:
Languages:  eng     Pagination:  185-92     Citation Subset:  IM    
Affiliation:
Department of Animal Biology (Vertebrates), University of Barcelona, 08028, Barcelona, Spain.
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MeSH Terms
Descriptor/Qualifier:
Absorptiometry, Photon
Adolescent
Adult
Animals
Anthropometry / methods*
Body Size
Bone Density*
Child
Child, Preschool
Female
Humans
Infant
Infant, Newborn
Linear Models
Lumbar Vertebrae / anatomy & histology*,  radiography
Male
Mammals
Models, Biological
Predictive Value of Tests
Sex Characteristics*
Species Specificity

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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