Calcium absorptive consistency

Robert P. Heaney, Connie M. Weaver, Mary Lee Fitzsimmons, Robert R. Recker

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


Calcium absorption efficiency was measured two or three times each in 74 premenopausal and 142 postmenopausal women under conditions predicted to alter absorptive performance. A woman's absorptive consistency was evaluated across differing loads, differing intervals, and substances of differing intrinsic absorbability. In all these circumstances there was a statistically significant correlation between a woman's absorption under differing test situations accounting for up to 60% of the variance typically found in cross-sectional studies. For example, when the same substance but at differing load levels was tested three times over an 8 week period, various coefficients of correlation ranged from +0.773 to +0.849 (P <0.001). Even over intervals as long as 5 years correlation of absorption fraction within individuals remained significant (r = +0.487, P <0.001).

Original languageEnglish (US)
Pages (from-to)1139-1142
Number of pages4
JournalJournal of Bone and Mineral Research
Issue number11
StatePublished - Nov 1990

All Science Journal Classification (ASJC) codes

  • Endocrinology, Diabetes and Metabolism
  • Orthopedics and Sports Medicine


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