عنوان مقاله [English]
نویسندگان [English]چکیده [English]
Background: The prevalence of obesity is increasing as threatening in all age group in the world so it has became the serious problem in the public health ,Nowadays, the use of medicinal plants has have been considered more than other methods of weight control, the green tea is considered one of these plants that So far the researches have been done on its effects on weight But the results of these studies have been inconsistent due to various doses and different methods so, this study was conducted to determine the effect of various doses of green tea extract on weight loss and body mass index in adults obese women.
Materials and Methods: This double-blind clinical trial has randomly been conducted on 60 obese women that were overweight, with a BMI> 27 kg/m2, WC> 87 (waist). The samples were divided randomly into three groups of 20; in this regard, have received two intervention groups (experimental) recipient of green tea extract with different concentrations (50 and 100 percent) and control group (control) recipient of placebo containing cellulose. Each participant received daily three times (one hour before each meal) of green tea extract or placebo for 12 weeks. All samples were measured in the baseline and weeks 2, 4, 6, 8, 10 and 12 in terms of anthropometric measures (weight, height, waist circumference, hip circumference, body mass index (BMI) and waist-hip ratio (WHR). the data were collected and have been analyzed in the different groups By using of software SPSS 19 - Sas9.2 and statistical test of one-way Anova and was used repeated Measurement test for Comparisons of these groups
Results: In the baseline The mean and standard deviation of weight and BMI were in the experimental group which received 100% of extract, respectively74.19 ± 4.3 and 28.95 ± 0.8 and in the experimental groups which received extract 50% 1/5 ± 34/74 and 06/1 ± 69/28., which was reduced respectively, to 67.90 ± 4.1 and 26.49 ± 0.7 as well as 70.98 ± 5.6 and 27.38 ± 1.19 in the end of the study Which is indicative of a significant difference in the mean weight and BMI on these consecutive weeks(P < 0.01،P