Calcium requirements for bone growth in Canadian boys and girls during adolescence

Vatanparast, Hassanali, Bailey, Donald A., Baxter-Jones, Adam D.G. and Whiting, Susan J. (2009) Calcium requirements for bone growth in Canadian boys and girls during adolescence. British Journal of Nutrition, 103 4: 575-580. doi:10.1017/S0007114509992522


Author Vatanparast, Hassanali
Bailey, Donald A.
Baxter-Jones, Adam D.G.
Whiting, Susan J.
Title Calcium requirements for bone growth in Canadian boys and girls during adolescence
Journal name British Journal of Nutrition   Check publisher's open access policy
ISSN 1475-2662
Publication date 2009-10-26
Sub-type Article (original research)
DOI 10.1017/S0007114509992522
Volume 103
Issue 4
Start page 575
End page 580
Total pages 6
Editor P.C. Calder
Place of publication Cambridge, UK
Publisher Cambridge University Press
Collection year 2010
Language eng
Subject C1
1111 Nutrition and Dietetics
920501 Child Health
Abstract Adequate dietary intake during the growth period is critical for bone mineral accretion. In 1997, an adequate intake (AI) of 1300 mg/d Ca was set for North American adolescents aged 9–18 years based on best available data. We determined bone Ca accrual values from age 9 to 18 years taking into account sex and maturity. Furthermore, we used the accrual data to estimate adolescents' Ca requirements. Total body bone mineral content (TBBMC) of eighty-five boys and sixty-seven girls participating in the Saskatchewan Paediatric Bone Mineral Accrual Study were used to determine annual TBBMC accumulation over the pubertal growth period. Using a similar factorial approach as the AI, we estimated Ca requirements of adolescent boys and girls for two age groups: 9–13 and 14–18 years. Between 9 and 18 years, boys accrued 198·8 (sd 74·5) g bone mineral content (BMC) per year, equivalent to 175·4 (sd 65·7) mg Ca per d with the maximum BMC accrual of 335·9 g from age 13 to 14 years. Girls had 138·1 (sd 64·2) g BMC per year, equalling121·8 (sd 56·6) mg Ca per d with the maximum annual BMC accrual of 266·0 g from age 12 to 13 years. Differences were observed between both sex and age groups with respect to Ca needs: boys and girls aged 9–13 years would require 1000–1100 mg/d Ca, and from age 14 to 18 years, the mean Ca requirements would be relatively stable at 1000 mg/d for girls but would rise to 1200 mg/d for boys.
Keyword Calcium requirements
Bone mineral accrual
Adolescence
MINERAL CONTENT
LONGITUDINAL ANALYSIS
WHOLE-BODY
CHILDREN
ACCRETION
WOMEN
KINETICS
FEMALES
PUBERTY
MASS
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Human Movement and Nutrition Sciences Publications
 
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Created: Sun, 14 Mar 2010, 00:06:55 EST