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This study examines the role of energy availability on menstrual function and bone mass in female adolescent endurance athletes. Specific evaluations include dietary intake, exercise energy expenditure, training schedules, menstrual function and bone density.
The purpose of this project is to examine the relationships among low energy availability, H-P-A axis, menstrual function and bone density and bone turnover in high school female cross country runners. Our objectives are to: 1)determine energy intake, exercise energy expenditure, and fat-free mass to examine energy availability; 2)in a subset of runners, using double labelled water, estimate total energy expenditure and indirect calorimetry to estimate resting metabolic rate; 3)assess the relationship between energy availability, hormones that regulate bone turnover, markers of bone formation and resorption and bone mineral content and density; 4)identify the relationship between energy availability, hormones that regulate menstrual function and current menstrual status; and 5)determine the energy intake and energy expenditure variables exhibiting the strongest associations with energy availability.
Time Perspective: Prospective
Marta Van Loan
USDA, Western Human Nutrition Research Center
Published on BioPortfolio: 2014-08-27T03:16:15-0400
SSRI treatment in adults was found to decrease bone density. The use of SSRI among pregnant women with depression or anxiety is extendent and raising. The effect of bone density of the inf...
Decreased bone strength is a common and serious medical problem present in many people with anorexia nervosa. Men with anorexia nervosa have lower levels of gonadal steroids such as testo...
What are the effects of the currently used AEDs on bone mineralization in children and adolescents between the ages of 8 to 18? This is a pilot observational study using DEXA scans to meas...
To assess and quantify the changes in bone mineral density between the ARIMIDEX and ARIMIDEX plus NOLVADEX groups when compared to the NOLVADEX alone treatment group whilst receiving trial...
In this study researchers would like to learn more about the low levels of bone mineral density seen in approximately half of women in their forties diagnosed as currently having or previo...
Bone density may influence the primary fixation of cementless implants, and poor bone density may increase the risk of implant failure. Before deciding on using total joint replacement as treatment in...
MR-only treatment planning (TP) can be advantageous in paediatric radiotherapy. However, electron density extraction is necessary for dose calculation. Normally, after bone segmentation, a bulk densit...
Previous studies indicate that human immunodeficiency virus (HIV)-infection and combination antiretroviral therapy (cART) can affect bone turnover. Furthermore, HIV-infected patients have lower bone m...
Low bone mineral density (BMD) is a significant co-morbidity in HIV. However, studies evaluating vitamin D supplementation on bone health in this population are limited. This study investigates change...
Children undergoing lung transplant are at risk for low bone mineral density (BMD) and fractures. The effect of lung transplantation on bone health in pediatric patients is unknown.
The amount of mineral per square centimeter of BONE. This is the definition used in clinical practice. Actual bone density would be expressed in grams per milliliter. It is most frequently measured by X-RAY ABSORPTIOMETRY or TOMOGRAPHY, X RAY COMPUTED. Bone density is an important predictor for OSTEOPOROSIS.
Agents that inhibit BONE RESORPTION and/or favor BONE MINERALIZATION and BONE REGENERATION. They are used to heal BONE FRACTURES and to treat METABOLIC BONE DISEASES.
A humanized monoclonal antibody and an inhibitor of the RANK LIGAND, which regulates OSTEOCLAST differentiation and bone remodeling. It is used as a BONE DENSITY CONSERVATION AGENT in the treatment of OSTEOPOROSIS.
Rare autosomal recessive syndrome characterized by delayed closing of CRANIAL SUTURES, short stature, ACRO-OSTEOLYSIS of distal phalanges, dental and MAXILLOFACIAL ABNORMALITIES and an increase in bone density that results in frequent BONE FRACTURES. It is associated with BONE RESORPTION defect due to mutations in the lysosomal cysteine protease CATHEPSIN K.
An abnormal hardening or increased density of bone tissue.
Osteoporosis is a disease in which the bones become extremely porous, are subject to fracture, and heal slowly, occurring especially in women following menopause and often leading to curvature of the spine from vertebral collapse. Follow and track&n...
Women's Health - key topics include breast cancer, pregnancy, menopause, stroke Follow and track Women's Health News on BioPortfolio: Women's Health News RSS Women'...