Calcium-fortified beverage supplementation effects on bone mineral density and body composition in healthy young women

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Show simple item record Peterson, Kimberly Sue 2008-05-20T15:39:40Z 2008-05-20T15:39:40Z 2008-05-20T15:39:40Z
dc.description.abstract BACKGROUND: Dietary supplements are increasing in popularity; individuals are looking beyond traditional methods of calorie restriction and exercise to improve health. Calcium is a critical nutrient for bone metabolism that has also been shown to enhance weight loss effects secondary to diet. PURPOSE: To determine whether eight months of calcium supplementation, in a liquid, shelf-stable form, increases bone mineral density or decreases body weight and/or body fat in free-living young adult women. METHODS: Volunteer subjects (n=42) were randomly assigned to a supplement group receiving 1,125 mg Ca2+/day (CA-BEV) or to a free-living control group (CON), which did not receive the supplement. At baseline and after the 8-month intervention (POST), dietary intake was assessed using 3-day diet records. Total body composition (body fat percentage, %FatTB; abdominal percentage fat, %FatAb; fat mass, FM; non-bone fat-free mass, FFM) and bone mineral density (lumbar spine and femoral neck; BMD) were measured via dual energy x-ray absorptiometry. Subjects also completed a sub-maximal treadmill exercise test to estimate respiratory fitness at baseline and POST. RESULTS: At POST, the CA-BEV group's calcium intake (1,868[plus or minus]941 mg/d) was significantly greater than (p<0.05) the CON group (867[plus or minus]405 mg/d) and the calcium:protein ratio of the CA-BEV group (29.5[plus or minus]17.1 mg/g) was greater than (p<0.05) the CON group (12.9 ±6.2 mg/g). Those differences in calcium did not lead to predicted differences (p<0.05) between groups for BMD, body weight, %FatTB, %FatAB, FM or FFM. CONCLUSION: Our findings do not support the hypothesis that increasing calcium intake increases BMD or decreases body weight or body fat in healthy young women over an 8-month period despite a nearly two-fold increase in calcium intake. en
dc.description.sponsorship Kansas Health and Nutrition Fund en
dc.language.iso en_US en
dc.publisher Kansas State University en
dc.subject obesity en
dc.subject overweight en
dc.subject osteoporosis en
dc.subject fat en
dc.title Calcium-fortified beverage supplementation effects on bone mineral density and body composition in healthy young women en
dc.type Thesis en Master of Science en
dc.description.level Masters en
dc.description.department Department of Human Nutrition en
dc.description.advisor Mark D. Haub en
dc.subject.umi Health Sciences, Nutrition (0570) en 2007 en December en

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