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Osteoporosis is a major public health problem. Prevention of osteoporosis depends in part on good bone development in childhood and adolescence. This study will evaluate a weight-bearing exercise program and high-calcium diet on bone development in adolescent girls.
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.
Allocation: Randomized, Control: Active Control, Endpoint Classification: Efficacy Study, Intervention Model: Factorial Assignment, Masking: Open Label, Primary Purpose: Prevention
Calcium rich diet, Weight bearing exercise
Active, not recruiting
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Published on BioPortfolio: 2014-08-27T03:55:08-0400
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The physical state of supporting an applied load. This often refers to the weight-bearing bones or joints that support the body's weight, especially those in the spine, hip, knee, and foot.
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A diet rich in DIETARY CARBOHYDRATES.
Calcium compounds used as food supplements or in food to supply the body with calcium. Dietary calcium is needed during growth for bone development and for maintenance of skeletal integrity later in life to prevent osteoporosis.
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