- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT00063011
Bone Development in Adolescent Girls: Effects of Calcium and Exercise
Calcium and Exercise Effect on Pubertal Bone Gain
Studieoversigt
Status
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
There are currently few safe and effective methods for restoring lost bone to the osteoporotic skeleton. Therefore, prevention of osteoporosis is crucial. If skeletal development can be maximized during growth, young people will begin adulthood with optimal bone mass and will be less likely to develop osteoporosis in later years. This study will determine the effects of weight-bearing physical activity and a high-calcium diet on bone mass in adolescent girls.
Participants in this study will be randomized to one of three study arms. Girls in Arm 1 will consume their usual diets and will participate in a weight-bearing exercise program that meets 3 times per week. Girls in Arm 2 will also participate in a weight-bearing exercise program that meets 3 times per week and will be given high calcium foods to supply 1500 mg of calcium per day. Girls in Arm 3 will consume their usual diet and maintain their customary activity level. Study visits occur every 6 months; participants will be followed for 4 ½ years. Assessments will include a medical and social history and measurements of spine, hip, radius, and total body bone mineral content (BMC); calcaneal speed of sound (SOS); height; weight; and Tanner stage.
Undersøgelsestype
Tilmelding
Fase
- Fase 2
- Fase 1
Kontakter og lokationer
Studiesteder
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Nebraska
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Omaha, Nebraska, Forenede Stater, 68131
- Creighton University
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Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria
- Tanner Stage of Development: Stage 1
Exclusion Criteria
- History of lactose intolerance, milk allergy, corticosteroid or anticonvulsant therapy, familial hypercholesterolemia, mental or physical handicaps, cancer, rheumatoid arthritis, asthma, or any other significant health problem
- Body mass index (BMI) >= 85th percentile for age and gender
- Regularly have more than two practice sessions per week of dance, gymnastics, or organized team sports
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Forebyggelse
- Tildeling: Randomiseret
- Interventionel model: Faktoriel opgave
- Maskning: Ingen (Åben etiket)
Samarbejdspartnere og efterforskere
Efterforskere
- Ledende efterforsker: Joan M. Lappe, Ph.D., Creighton University
Datoer for undersøgelser
Studer store datoer
Studiestart
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- R01HD036601 (U.S. NIH-bevilling/kontrakt)
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