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Clinical Trial Summary

Study is a 12-week Double blind,controlled experiments designed to examine the possible effects of vitamin D receptor gene polymorphisms on the metabolic, inflammatory and oxidative stress markers in type 2 diabetic patients to vitamin D-fortified yogurt drink intake.


Clinical Trial Description

In a 12-week randomized controlled trial ( double-blind study), based on data on serum 25(OH)D changes from other studies (35), to achieve 1 standard deviation difference in circulating 25(OH)D with two-sided alpha of 0.05 and a beta of 0.2 after a 12-week intervention period, the sample size was calculated 40 individuals per treatment group. Considering 3 polymorphic variant groups and one control group which receives plain yogurt drink, 160 subjects are needed. Allowing for 10% attrition over 12 weeks of intervention, a total of 180 subjects are required. In treatment groups, all patients receive 500 ml per day of low-fat (1%) Yogurt Drink fortified with approximately 500IU of vitamin D3 . Control group receives 500 ml per day of plain (unfortified) Yogurt Drink. Metabolic, inflammatory and oxidative stress markers are evaluated at the beginning and in the end of the interventional period. ;


Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Outcomes Assessor)


Related Conditions & MeSH terms


NCT number NCT01236846
Study type Interventional
Source National Nutrition and Food Technology Institute
Contact
Status Completed
Phase N/A
Start date October 2009
Completion date April 2011

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