One Year of Oral Calcium Supplementation Maintains Cortical Bone Density in Young Adult Female Distance Runners

Kerri M. Winters-Stone, Christine M. Snow

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

We conducted a double-blind, placebo-controlled, randomized trial to determine whether 1 year of supplemental calcium intake would augment hip [greater trochanter, GT, femoral neck (FN), total hip (TH)], spine (LS), and femoral mid-shaft (Fmr) BMD in female distance runners. Twenty-three women (age: 23.7 ± 4.7 yrs, height: 165.6 ± 6.3 cm, weight: 55.7 ± 6. 1 kg) were randomly assigned to receive either 1000 mg/d of supplemental calcium (N = 13) or placebo tablets (N = 10) for 1 year. BMD was determined by DXA (Hologic 1000-W) and tablet compliance by self-report logs. Compliance averaged 79% and 71% for supplement and placebo groups, respectively. Calcium supplementation did not affect hip or spine BMD, but did prevent loss at the femoral mid-shaft (GT: -0.5% vs. 0.2%, FN: 0.9% vs. 1.1%, TH: -0.3% vs. 0.2%, LS: 0.3% vs. 1.2%, Fmr: 0.1% vs. -1.8%, for calcium vs. placebo, respectively). We conclude that the addition of 800 mg/d of supplemental calcium to the diet of young adult female distance runners with habitual calcium intakes of ∼1000 mg/d, prevents cortical but not trabecular bone loss.

Original languageEnglish (US)
Pages (from-to)7-17
Number of pages11
JournalInternational Journal of Sport Nutrition and Exercise Metabolism
Volume14
Issue number1
DOIs
StatePublished - Feb 2004

Keywords

  • Athletes
  • Bone
  • Nutrition
  • Osteoporosis
  • Premenopausal
  • Women

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Orthopedics and Sports Medicine
  • Nutrition and Dietetics

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