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http://dx.doi.org/10.17495/easdl.2016.2.26.1.25

Effects of Whey Protein-rich Meal Substitute in 4-Week Diet Trial on Body Weight, Body Fat, and Body Composition of Overweight or Obese Females  

Xi, Mei-Zhu (Dept. of Food and Nutrition, Chung-Ang University)
Zhang, Yi-Lin (Dept. of Food and Nutrition, Chung-Ang University)
Choi, Young-Bin (Dept. of Food and Nutrition, Chung-Ang University)
Jeong, Gi-Hee (Dept. of Food and Nutrition, Chung-Ang University)
Kim, Gun-Woo (RESET Healthcare Co., Inc.)
Park, Yong-Woo (RESET4U)
Lee, Bog-Hieu (Dept. of Food and Nutrition, Chung-Ang University)
Publication Information
Journal of the East Asian Society of Dietary Life / v.26, no.1, 2016 , pp. 25-33 More about this Journal
Abstract
The study was performed to investigate the effects of whey protein-rich meal substitute added with vitamins, minerals, and lactobacillus powder probiotics on weight loss, body fat, and body composition in 24 female volunteers for 4 weeks. Whey protein-rich meal substitute was consumed with low-fat, high calcium milk (1% fat, 260 mg/200 mL) twice a day. Subjects submitted 3-day diet records and a life-style questionnaire before the study. During the study, subjects were required to turn in a diet record every day and consume the meal substitute formula in the metabolic ward at C university for 4 weeks. Anthropometric measurements were carried out weekly by Inbody 7.0. The dietary intake and anthropometric data were analyzed to compare changes before and after the study by paired t-test with SPSS version 23.0. The subjects were mostly early 20's and either overweight or obese and highly motivated to lose weight. Most of the subjects consumed three meals per day regularly and spent mostly 10~15 minutes for a meal. Their caloric intake was relatively low and decreased from 1,360 kcal at week 0 to 1,100 kcal after 4 weeks. However, total protein intake increased while carbohydrate and fat intakes decreased (p<0.05) after the trial. Nine vitamin intakes after the study improved compared to those before the study (p<0.05). After the study, subjects showed lower body weight (-1.8 kg), body fat (-0.94 kg), percent body fat (-0.86%), as well as waist circumference (-4.52 cm), hip circumference (-0.44 cm), waist hip ratio (-0.05), and triceps skinfold thickness (-2.39 mm) compared to those at week 0 (p<0.05). Muscle mass tended to be less compared to week 0, although there was no significant differences between weeks 0 and 4. In conclusion, diet trial with whey protein-rich meal substitute induced weight loss and positively changed body fat parameters and body composition.
Keywords
Whey protein meal substitute; weight loss; body fat; anthropometry; human clinical trial;
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Times Cited By KSCI : 6  (Citation Analysis)
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