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Multivariate Analysis of Genetic and Environmental Influences for Longitudinal Height and Weight Data

Published online by Cambridge University Press:  01 August 2014

S. Fischbein  and
N.L. Pedersen
S. Fischbein*
Affiliation:
Department of Educational Research, Stockholm Institute of Education, Stockholm, Sweden
N.L. Pedersen
Affiliation:
Department of Environmental Hygiene, The Karolinska Institute, Stockholm, Sweden College of Human Development, Pennsylvania State University, University Park, USA
*
Department of Educational Research, Stockholm Institute of Education, Box 34103, S-100 26 Stockholm, Sweden

Abstract

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A multivariate analysis of genetic and environmental influences on longitudinal height and weight data from a Swedish twin sample is presented. For height in boys, genetic correlations of all ages with the first time point decrease during puberty and increase afterwards. A more linear pattern is evident for the girls. For weight in boys, genetic and environmental correlations are similar to the ones for height. Genetic correlations for girls are stable with age, while environmental correlations peak at 13.5 years and decrease drastically thereafter. The patterns for height and weight in boys suggest that a new set of genes may be turned on during puberty and turned off again afterwards. The pattern found for weight in girls indicates that a simple additive genetic model is not appropriate. It is necessary, however, to apply the model to actual data from several time points to recognize the inadequacy of the model.

Keywords

HeightWeightHeritabilityLongitudinal studyMultivariate analysis
Type
Research Article
Information
Acta geneticae medicae et gemellologiae: twin research , Volume 36 , Issue 2 , April 1987 , pp. 171 - 180
Copyright
Copyright © The International Society for Twin Studies 1987

References

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