Calcium requirements and metabolism in Chinese-American boys and girls

Lu Wu, Berdine R. Martin, Michelle M. Braun, Meryl E. Wastney, George P. McCabe, Linda D. McCabe, Linda A. DiMeglio, Munro Peacock, Connie M. Weaver

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Calcium requirements of North American adolescents were set at 1300 mg/day based on data from white girls. Calcium requirements for Asian-American adolescents have not been studied. Using metabolic balance protocols and a range in calcium intakes, skeletal calcium retention was determined in Chinese-American adolescents. A sample of 29 adolescents, 15 boys aged 12 to 15 years and 14 girls aged 11 to 15 years, was studied twice on paired calcium intakes ranging between 629 to 1835 mg/day using a randomized-order crossover design. Calcium absorption and bone turnover rates using double-stable calcium isotope kinetic analysis on two calcium intakes per subject were measured and compared in boys and girls. Girls and boys had low habitual mean calcium intakes of 648 and 666 mg/day, respectively, and low mean serum 25-hydroxyvitamin D concentrations of 19.1 and 22.2 ng/mL, respectively. True fractional calcium absorption varied inversely with calcium load. Boys had significantly higher bone turnover rate than girls at the same calcium intake. Calcium retention increased with calcium intake; calcium intakes to achieve maximal calcium retention were 1100 mg/day in boys and 970 mg/day in girls. Recommendations for calcium requirements should be lowered for Chinese-American adolescents.

Original languageEnglish (US)
Pages (from-to)1842-1849
Number of pages8
JournalJournal of Bone and Mineral Research
Volume25
Issue number8
DOIs
StatePublished - Aug 1 2010

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Asian Americans
Calcium
Bone Remodeling
Calcium Isotopes

Keywords

  • Adolescents
  • Asian Americans
  • Calcium kinetics
  • Calcium requirements

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Endocrinology, Diabetes and Metabolism

Cite this

Wu, L., Martin, B. R., Braun, M. M., Wastney, M. E., McCabe, G. P., McCabe, L. D., ... Weaver, C. M. (2010). Calcium requirements and metabolism in Chinese-American boys and girls. Journal of Bone and Mineral Research, 25(8), 1842-1849. https://doi.org/10.1002/jbmr.76

Calcium requirements and metabolism in Chinese-American boys and girls. / Wu, Lu; Martin, Berdine R.; Braun, Michelle M.; Wastney, Meryl E.; McCabe, George P.; McCabe, Linda D.; DiMeglio, Linda A.; Peacock, Munro; Weaver, Connie M.

In: Journal of Bone and Mineral Research, Vol. 25, No. 8, 01.08.2010, p. 1842-1849.

Research output: Contribution to journalArticle

Wu, L, Martin, BR, Braun, MM, Wastney, ME, McCabe, GP, McCabe, LD, DiMeglio, LA, Peacock, M & Weaver, CM 2010, 'Calcium requirements and metabolism in Chinese-American boys and girls', Journal of Bone and Mineral Research, vol. 25, no. 8, pp. 1842-1849. https://doi.org/10.1002/jbmr.76
Wu L, Martin BR, Braun MM, Wastney ME, McCabe GP, McCabe LD et al. Calcium requirements and metabolism in Chinese-American boys and girls. Journal of Bone and Mineral Research. 2010 Aug 1;25(8):1842-1849. https://doi.org/10.1002/jbmr.76
Wu, Lu ; Martin, Berdine R. ; Braun, Michelle M. ; Wastney, Meryl E. ; McCabe, George P. ; McCabe, Linda D. ; DiMeglio, Linda A. ; Peacock, Munro ; Weaver, Connie M. / Calcium requirements and metabolism in Chinese-American boys and girls. In: Journal of Bone and Mineral Research. 2010 ; Vol. 25, No. 8. pp. 1842-1849.
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