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OsteoporosisPhase 2NCT00000402

Calcium and Bone Mass in Young Females

A Phase 2 study testing Calcium in people with Osteoporosis, run by Ohio State University at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

We originally suggested that calcium in the diet is important in determining the amount of bone (bone mass) that builds up in young adults. We are testing the effect of calcium on bone mass in 354 Caucasian (white) girls. Read more about this study

Who is it for?
Ages 8 to 13 years, women onlyHealthy volunteers can take part
Conditions the study is for
Osteoporosis
What is being tested?
Calcium
How many people
354 participants
Where
1 siteUnited States
Study dates
Aug 1991to Dec 2001
Phase
Phase 2
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 8 to 13 years
  • Women only
  • Healthy volunteers accepted
  • Child

Who may be able to join

  • Pubertal stage II
  • Calcium intake below a threshold level
  • Caucasian
  • Normal health

Who cannot join

  • Medications affecting calcium and bone metabolism
  • Chronic diseases
  • Metabolic bone disease
  • Abnormality in calcium metabolism

Trial locations and contacts

1 site in 1 country.

United States1 site
  • OSU Bone and Mineral Metabolism Laboratory

    Columbus, Ohio, 43210

Other trials in United States

About this study

Official title: Long Term Effects of Calcium on Bone Mass in Young Females

We originally suggested that calcium in the diet is important in determining the amount of bone (bone mass) that builds up in young adults. We are testing the effect of calcium on bone mass in 354 Caucasian (white) girls. At the start of this 7-year study, the average age of the girls was 11 years, and they had not yet reached puberty. The study will also provide information about the effect of calcium on body composition (body fat) and blood pressure in young women.

We have been giving calcium to one group of participants in this study and giving a placebo (an inactive pill, or "sugar pill") to the other group. The results of this research will be important in preventing osteoporosis, because building more bone as a young person should reduce a woman's chances of developing osteoporosis later in life.

Read the detailed description

This study evaluates the effect of calcium on bone mass accretion over 7 years in a cohort of 354 young females who were in pubertal Stage II at the start of the study. The average age of study participants at entry was 11 years; at the end of the study participants were 18 years old.

The study looks at skeletal development under the influence of heredity, nutrition (calcium), and physical exercise. We gave calcium to participants in one arm of this clinical trial calcium. Participants in the other arm of the trial were given a placebo. The main outcome variable is the bone mass measured at different skeletal regions.

The study will also provide data about the efficacy of calcium supplementation with regard to hypertension prevention and obesity. The results of this research will be important in preventing osteoporosis.

Conditions
Osteoporosis
Being tested
Calcium
Keywords
Osteoporosis, Dietary calcium, Puberty, Bone density, Bone mass, Primary prevention of osteoporosis
Medical subject headings
Osteoporosis

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • CalciumDrug

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted4 Nov 1999 (estimated)
  2. Study startAug 1991
  3. Study completionDec 2001

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Single group
Masking
Double blind
Enrolment
354 participants
IDs, dates and publications
ClinicalTrials.gov ID
NCT00000402
Sponsor's protocol ID
R01AR040736
Other IDs
R01AR040736, NIAMS-007
Status last verified
May 2013
First submitted
3 Nov 1999
Last updated
22 May 2013
Results posted
No

Publications

  • Matkovic V. Nutrition, genetics and skeletal development. J Am Coll Nutr. 1996 Dec;15(6):556-69. doi: 10.1080/07315724.1996.10718630.

    PubMed 8951732
  • Matkovic V, Ilich JZ, Andon MB, Hsieh LC, Tzagournis MA, Lagger BJ, Goel PK. Urinary calcium, sodium, and bone mass of young females. Am J Clin Nutr. 1995 Aug;62(2):417-25. doi: 10.1093/ajcn/62.2.417.

    PubMed 7625351
  • Matkovic V, Jelic T, Wardlaw GM, Ilich JZ, Goel PK, Wright JK, Andon MB, Smith KT, Heaney RP. Timing of peak bone mass in Caucasian females and its implication for the prevention of osteoporosis. Inference from a cross-sectional model. J Clin Invest. 1994 Feb;93(2):799-808. doi: 10.1172/JCI117034.

    PubMed 8113412
  • Matkovic V, Ilich JZ. Calcium requirements for growth: are current recommendations adequate? Nutr Rev. 1993 Jun;51(6):171-80. doi: 10.1111/j.1753-4887.1993.tb03097.x.

    PubMed 8371847
  • Matkovic V, Ilich J, Hsieh L. Influence of age, sex and diet on bone mass and fracture rate. Osteoporos Int. 1993;3 Suppl 1:20-2. doi: 10.1007/BF01621855. No abstract available.

    PubMed 8461560
  • Matkovic V. Calcium intake and peak bone mass. N Engl J Med. 1992 Jul 9;327(2):119-20. doi: 10.1056/NEJM199207093270210. No abstract available.

    PubMed 1603119
  • Matkovic V, Heaney RP. Calcium balance during human growth: evidence for threshold behavior. Am J Clin Nutr. 1992 May;55(5):992-6. doi: 10.1093/ajcn/55.5.992.

    PubMed 1570810
  • Matkovic V. Osteoporosis as a pediatric disease: role of calcium and heredity. J Rheumatol Suppl. 1992 Apr;33:54-9.

    PubMed 1593603
  • Matkovic V, Fontana D, Tominac C, Goel P, Chesnut CH 3rd. Factors that influence peak bone mass formation: a study of calcium balance and the inheritance of bone mass in adolescent females. Am J Clin Nutr. 1990 Nov;52(5):878-88. doi: 10.1093/ajcn/52.5.878.

    PubMed 2239765
  • Matkovic V, Landoll JD, Badenhop-Stevens NE, Ha EY, Crncevic-Orlic Z, Li B, Goel P. Nutrition influences skeletal development from childhood to adulthood: a study of hip, spine, and forearm in adolescent females. J Nutr. 2004 Mar;134(3):701S-705S. doi: 10.1093/jn/134.3.701S.

    PubMed 14988471

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Calcium in people with Osteoporosis, run by Ohio State University at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 22 May 2013. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00000402, which also lists 10 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 22 May 2013.

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