| Titre : | Period-specific growth, overweight and modification by breastfeeding in the GINI and LISA birth cohorts up to age 6 years. (2009) |
| Auteurs : | Peter RZEHAK ; Carl-Peter BAUER ; Dietrich BERDEL ; Michael BORTE ; Nora FENSKE ; Joachim HEINRICH ; Olf HERBARTH ; Sibylle KOLETZKO ; Ursula KRAMER ; Stefanie SAUSENTHALER ; Beate SCHAAF ; Andrea VON BERG ; H-Erich WICHMANN ; Institute of Epidemiology. Helmholtz Zentrum München. German Research Center for Environmental Health. Neuherberg. DEU ; Institute ot Medical Data Management. Biometrics and Epidemiology. Ludwig-Maximilians University of Munich. Munich. DEU |
| Type de document : | Article |
| Dans : | European journal of epidemiology (vol. 24, n° 8, 2009) |
| Pagination : | 449-467 |
| Langues: | Anglais |
| Mots-clés : | Croissance ; Poids corporel ; Modification ; Obésité ; Allaitement ; Age ; Taille corporelle ; Homme ; Epidémiologie |
| Résumé : | [BDSP. Notice produite par INIST-CNRS R0xkm99F. Diffusion soumise à autorisation]. Children's weight/growth development is age-specific and may be influenced by breastfeeding. We therefore assessed velocities of weight, length, body-mass-index and overweight/obesity development from birth up to age 6 years overall and in relation to breastfeeding. The method of this study is based on pooled data of the birth-cohorts GINI-plus and LISA-plus and follows 7,643 healthy full-term neonates in four study-centers in Germany. Up to nine anthropometric measurements are available. Overweight/obesity is percentile-defined according to WHO-Child-Growth-Standards. Fully-breastfed is defined as breastfed for at least 4 months. Piecewise-linear-random-coefficient-models were applied to assess growth trajectories and velocities between 0-3,3-6,6-12,12-24 and beyond 24th months. Velocities for weight-length-and BMI-development are highest in the first 3 months after birth and diminish, with differing pace, in the periods that follow. For overweight and obesity, peak-velocities are estimated in periods 6-12 and 3-6 months. The difference in the velocity of weight gain for breastfed vs. other children is - 18 g/month in the first 3 month, - 93 g/month between month 3 and 6, - 14 g/month between month 6 and 12 and - 3 g/month beyond the 24th month. Velocities in length are not different between breastfed and non-breastfed children. Over time, a slightly lower risk (difference<2%) of being overweight was estimated for breastfed children, after adjustment for study-center, socioeconomic-status and maternal smoking in pregnancy. Infants fully-breastfed gain less weight, but grow equally in length in the first 12 months of life versus mixed or formula-fed children. The protective effect of breastfeeding on becoming overweight is related to its weight-velocity-modifying-effect in early infancy. |
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