An interventional study of C (smoothies based on soy protein containing no additional calcium) and B (smoothies based on soy protein containing calcium) in Obesity and Energy Metabolism, sponsored by Purdue University. Completed at 1 site in United States. Open to participants aged 12 Years to 15 Years. Per ClinicalTrials.gov, last updated 2010-01-13.
Sponsored by Purdue University · Not applicable, Interventional, and Treatment
Lifestyle choices,including diet,are conducive to healthy body weights in children. Dairy products and calcium supplementation have been associated with moderation of body weight and body fat. This study was designed to test the following hypotheses with overweight and obese adolescents consuming a controlled diet:
Subjects will consume a controlled diet containing 800 mg calcium for two three week periods. During one period they will also receive a frozen ice cream like product (smoothie) twice a day based on soy protein that contains no additional calcium. During the other period they will receive a similar product twice a day based on either dairy protein that contains 650 mg calcium or based on soy protein that contains 650 mg calcium as calcium carbonate
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This study's enrollment of 43 is below the median of 77 across 5,084 interventional studies indexed under Obesity.
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Exclusion Criteria:
During one three week session of a controlled diet subjects will receive a smoothie based on soy protein two times per day that does not contain any additional calcium
Dietary Supplement: C (smoothies based on soy protein containing no additional calcium)
During one three week period half of the participants will receive two smoothies per day based on soy protein that contain 650 mg Ca as calcium carbonate
Dietary Supplement: B (smoothies based on soy protein containing calcium)
During one three week session subjects will receive two smoothies per day based on dairy protein containing 650 mg calcium
Dietary Supplement: A (smoothies based on dairy protein containing calcium)
Two smoothies per day based on soy protein containing no additional calcium
Two smoothies daily based on soy protein containing 650 mg calcium as calcium carbonate
Two smoothies daily based on dairy protein containing 650 mg calcium
Energy balance will be calculated by quantitating the kilocalories represented by the following components: dietary intake, excreta, physical activity, resting energy expenditure, thermic effect of food, and thermogenesis.
Time frame: After equilibration on a controlled diet for one week, measurements will be taken over an additional two week period.
Serum biochemical measures of calcium metabolism (PTH, Vitamin D, and calcium)
Time frame: Serial meausures over a 10 hour period following a meal containing calcium from the placebo, dairy or calcium carbonate supplement
Calcium retention
Time frame: Two weeks on a controlled diet following one week of equilibration on the same diet
This study is completed, as verified in Jan 2010. You cannot join it, but the record below documents what was studied.
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