Document Detail


Factors that affect bone mineral accrual in the adolescent growth spurt.
MedLine Citation:
PMID:  14988470     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The development of bone mass during the growing years is an important determinant for risk of osteoporosis in later life. Adequate dietary intake during the growth period may be critical in reaching bone growth potential. The Saskatchewan Bone Mineral Accrual Study (BMAS) is a longitudinal study of bone growth in Caucasian children. We have calculated the times of maximal peak bone mineral content (BMC) velocity to be 14.0 +/- 1.0 y in boys and 12.5 +/- 0.9 y in girls; bone growth is maximal approximately 6 mo after peak height velocity. In the 2 y of peak skeletal growth, adolescents accumulate over 25% of adult bone. BMAS data may provide biological data on calcium requirements through application of calcium accrual values to factorial calculations of requirement. As well, our data are beginning to reveal how dietary patterns may influence attainment of bone mass during the adolescent growth spurt. Replacing milk intake by soft drinks appears to be detrimental to bone gain by girls, but not boys. Fruit and vegetable intake, providing alkalinity to bones and/or acting as a marker of a healthy diet, appears to influence BMC in adolescent girls, but not boys. The reason why these dietary factors appear to be more influential in girls than in boys may be that BMAS girls are consuming less than their requirement for calcium, while boys are above their threshold. Specific dietary and nutrient recommendations for adolescents are needed in order to ensure optimal bone growth and consolidation during this important life stage.
Authors:
Susan J Whiting; Hassanali Vatanparast; Adam Baxter-Jones; Robert A Faulkner; Robert Mirwald; Donald A Bailey
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  The Journal of nutrition     Volume:  134     ISSN:  0022-3166     ISO Abbreviation:  J. Nutr.     Publication Date:  2004 Mar 
Date Detail:
Created Date:  2004-02-27     Completed Date:  2004-04-19     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0404243     Medline TA:  J Nutr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  696S-700S     Citation Subset:  IM    
Affiliation:
College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan Canada, S7N 5C9. susan.whiting@usask.ca
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adolescent Nutritional Physiological Phenomena / physiology*
Body Height
Body Weight
Bone Density / physiology*
Growth / physiology*
Humans

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