genetic and environmental factors in body composition. a review based upon studies of familial aggregation
ABSTRACT The main purpose of this study was to review relevant information related to genetic and environmental factors influencing different indicators of body composition. Based upon Pubmed data, a search was made concerning studies related to information of familial aggregation with heritability estimates using nuclear families and/or extended pedigree and which had assessed body composition by means of DEXA, hydrostatic weighting, computerized tomography, bioelectric impedance or skinfolds. The results showed that a moderate to high familial clustering in body composition values are the result of genetic factors. A great deal of variability was detected in estimates of heritability by different measures of body composition as well as within the same measures. It has been suggested that different measurement techniques, sample sizes, and ethnic and cultural aspects may explain these discrepancies. In conclusion, it is important to stress the multifactorial nature of these complex phenotypes, which in some cases are highly susceptible to environmental factors. Genetic infl uences are responsible for 30 to 76% of the total variance of body composition measures.
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Authors | ;José António Ribeiro Maia;André Seabra;Rui Garganta;Rogério César Fermino |
Journal | journal of proteome research |
Year | 2007 |
DOI | DOI not found |
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