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KMID : 1161420150180060698
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Journal of Medicinal Food
2015 Volume.18 No. 6 p.698 ~ p.705
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Effects of Rye Bread Enriched with Green Tea Extract on Weight Maintenance and the Characteristics of Metabolic Syndrome Following Weight Loss: A Pilot Study
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Bajerska Joanna
Mildner-Szkudlarz Sylwia
Walkowiak Jarosław
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Abstract
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We examined whether the incorporation of green tea extract enriched rye bread (GTRB) into the diet can improve weight loss (WL) maintenance and control of abnormalities linked to metabolic syndrome (MS). A total of 55 obese men and women (mean age: 53.0±7.0 years, body mass index: 35.0±5.5?kg m?2) were recruited. The study had a single-blind randomized study design and consisted of an 8-week WL phase with low-energy calorie diet, followed by a 12-week weight maintenance (WM) phase. During the WM phase, the subjects were randomized into two groups, receiving either the control rye bread (control group) or the GTRB (intervention group). The ingestion of 280 and 360?g GTRB provided daily totals of 123.2 and 158.4?mg caffeine, and 188.3 and 242.1?mg of epigallocatechin gallate, for women and men, respectively. After the WL phase, subjects lost 7.3±3.1?kg of their baseline body weight. GTRB intake did not significantly influence the maintenance of WL, high-density lipoprotein-cholesterol, triglycerides, and glucose concentrations. Although, it resulted in significant differences (mean difference [95% confidence interval]) between the treatment groups in the maintenance of waist circumference (?1.22?cm [?2.4, ?0.02; P=.04]), the results were not clinically meaningful. Nevertheless, the ingestion of GTRB led to the maintenance of lower blood pressure (BP), also the proportion of subjects fulfilling the criteria of MS after the WM phase was lower in the intervention group than in the control group. Although GTRB consumption did not improve significantly the WL maintenance, it resulted in a better control of BP.
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KEYWORD
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body-weight maintenance, functional foods, green tea extract, metabolic syndrome, rye bread
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