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

Kerri Winters-Stone, Christine M. Snow

Research output: Contribution to journalArticle

19 Citations (Scopus)

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
StatePublished - Feb 2004

Fingerprint

bone density
young adults
Bone Density
Young Adult
mouth
thighs
Calcium
hips
calcium
placebos
Hip
Placebos
Femur Neck
spine (bones)
Thigh
compliance
Tablets
Spine
Femur
Self Report

Keywords

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

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Public Health, Environmental and Occupational Health
  • Endocrinology
  • Food Science

Cite this

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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.",
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