BACKGROUND: Somatic and bone development have each been studied in detail, but rarely in conjunction. AIM: The aim of this study was to determine what somatic and bone development have in common and how they differ. A second aim was to check for a pubertal spurt in bone age (BA) and to quantify it in a similar way as has been done for height. The Preece-Baines model is used to fit longitudinal data for BA. SUBJECTS AND METHODS: The data analysed are from the 1st Zurich Longitudinal Growth Study comprising 120 boys and 112 girls with almost complete data from birth to adulthood. RESULTS: Variability of somatic milestones was reduced in terms of BA and there was an aftergrowth after reaching adult RUS score 1000. A strong increase in the RUS score was seen at a late stage of the pubertal spurt (PS). Somatic milestones correlated with the RUS score attained at these ages and more so at an early stage of the PS. A PS for BA was clearly identified with a location at 14.2 years for boys and 12.2 years for girls. Age of peak bone development correlated highly with age of peak velocity of somatic variables. CONCLUSIONS: BA can be successfully modelled as a semi-quantitative entity. Bone development shows marked associations with somatic development, despite the fact that the latter reflects changes in size, while the former is essentially a maturity index and reflects changes in biochemical composition of tissues.
BACKGROUND: Somatic and bone development have each been studied in detail, but rarely in conjunction. AIM: The aim of this study was to determine what somatic and bone development have in common and how they differ. A second aim was to check for a pubertal spurt in bone age (BA) and to quantify it in a similar way as has been done for height. The Preece-Baines model is used to fit longitudinal data for BA. SUBJECTS AND METHODS: The data analysed are from the 1st Zurich Longitudinal Growth Study comprising 120 boys and 112 girls with almost complete data from birth to adulthood. RESULTS: Variability of somatic milestones was reduced in terms of BA and there was an aftergrowth after reaching adult RUS score 1000. A strong increase in the RUS score was seen at a late stage of the pubertal spurt (PS). Somatic milestones correlated with the RUS score attained at these ages and more so at an early stage of the PS. A PS for BA was clearly identified with a location at 14.2 years for boys and 12.2 years for girls. Age of peak bone development correlated highly with age of peak velocity of somatic variables. CONCLUSIONS:BA can be successfully modelled as a semi-quantitative entity. Bone development shows marked associations with somatic development, despite the fact that the latter reflects changes in size, while the former is essentially a maturity index and reflects changes in biochemical composition of tissues.
Authors: Robert M Malina; Sean P Cumming; Alan D Rogol; Manuel J Coelho-E-Silva; Antonio J Figueiredo; Jan M Konarski; Sławomir M Kozieł Journal: Sports Med Date: 2019-11 Impact factor: 11.136
Authors: Robert M Malina; Manuel J Coelho-E-Silva; António J Figueiredo; Renaat M Philippaerts; Norikazu Hirose; Maria Eugenia Peña Reyes; Giulio Gilli; Andrea Benso; Roel Vaeyens; Dieter Deprez; Luiz G A Guglielmo; Rojapon Buranarugsa Journal: Sports Med Date: 2018-04 Impact factor: 11.136
Authors: Robert M Malina; Diogo V Martinho; João Valente-Dos-Santos; Manuel J Coelho-E-Silva; Sławomir M Kozieł Journal: Int J Environ Res Public Health Date: 2021-02-04 Impact factor: 3.390