Green tea catechin plus caffeine supplementation to a high-protein diet has no additional effect on body weight maintenance after weight loss
ABSTRACT Green tea (epigallocatechin gallate + caffeine) and protein each were shown to improve body weight maintenance after weight loss.
We investigated the effect of a green tea-caffeine mixture added to a high-protein (HP) diet on weight maintenance (WM) after body weight loss in moderately obese subjects.
A randomized, placebo-controlled, double-blind parallel trial was conducted in 80 overweight and moderately obese subjects [age (mean +/- SD): 44 +/- 2 y; body mass index (BMI; in kg/m(2)): 29.6 +/- 2.0] matched for sex, age, BMI, height, body mass, and with a habitually low caffeine intake. A very-low-energy diet intervention during 4 wk was followed by 3 mo of WM; during the WM period, the subjects received a green tea-caffeine mixture (270 mg epigallocatechin gallate + 150 mg caffeine/d) or placebo, both in addition to an adequate protein (AP) diet (50-60 g protein/d) or an HP diet (100-120 g protein/d).
Subjects lost 7.0 +/- 1.6 kg, or 8.2 +/- 2.0%, body weight (P < 0.001). During the WM phase, WM, resting energy expenditure, and fat-free mass (FFM) increased relatively in both the HP groups and in the AP + green tea-caffeine mixture group (P < 0.05), whereas respiratory quotient and body fat mass decreased, all compared with the AP + placebo group. Satiety increased only in both HP groups (P < 0.05). The green tea-caffeine mixture was only effective with the AP diet.
The green tea-caffeine mixture, as well as the HP diet, improved WM independently through thermogenesis, fat oxidation, sparing FFM, and, for the HP diet, satiety; a possible synergistic effect failed to appear.
- SourceAvailable from: Fatemeh Azizi-Soleiman
[Show abstract] [Hide abstract]
- "For example, weight regain did not occur in individuals who had consumed green tea and caffeine mixture with an adequate or high-protein diet. Only, in the group with an adequate protein intake, a higher hunger score and lower satiety was seen. Based on a recent meta-analysis, green tea has no significant effect on the weight loss maintenance. "
ABSTRACT: Background: Weight regain after weight loss is a common problem for all those obese or overweight who have had a recent weight loss. Different cures such as diet therapy, behavioral therapy, exercise or a mixture of them have been advised as solutions. The purpose of this review is to find the best diet or eating pattern to maintain a recent weight loss. Materials and Methods: We searched in PubMed and SCOPUS by using the following key words: Overweight, obesity, weight maintenance, weight regain, and diet therapy. Finally, we assessed 26 articles in the present article. Results: Meal replacement, low carbohydrate-low glycemic index (GI) diet, high protein intake, and moderate fat consumption have shown some positive effects on weight maintenance. However, the results are controversial. A Dietary Approach to Stop Hypertension (DASH)-type diet seems helpful for weight maintenance although the need for more study has remained. Some special behaviors were associated with less weight regain, such as, not being awake late at night, drinking lower amount of sugar-sweetened beverages, and following a healthy pattern. Some special foods have been suggested for weight maintenance. However, the roles of specific foods are not confirmed. Conclusion: Healthy diets recommend low carbohydrate, low GI, and moderate fat foods, but it is not clear whether they are useful in preventing weight gain. It seems that consuming fewer calories helps people to keep weight loss. Further research to find strategies in obesity management focusing on successful maintenance of weight loss is needed.Journal of research in medical sciences 03/2014; 19(3):268-275. · 0.61 Impact Factor
[Show abstract] [Hide abstract]
- "Thus, three of the four theory related means nearly fit our mean theory numbers, with all four fitting directionally. Some have shown gender difference in response to higher protein [20,42] while others have not [23,44]. "
ABSTRACT: A large volume of human clinical data supports increased dietary protein for favorable changes to body composition, but not all data are conclusive. The aim of this review is to propose two theories, "protein spread theory" and "protein change theory" in an effort to explain discrepancies in the literature. Protein spread theory proposed that there must have been a sufficient spread or % difference in g/kg/day protein intake between groups during a protein intervention to see body composition and anthropometric differences. Protein change theory postulated that for the higher protein group, there must be a sufficient change from baseline g/kg/day protein intake to during study g/kg/day protein intake to see body composition and anthropometric benefits. Fifty-one studies met inclusion criteria. In studies where a higher protein intervention was deemed successful there was, on average, a 58.4% g/kg/day between group protein intake spread versus a 38.8% g/kg/day spread in studies where a higher protein diet was no more effective than control. The average change in habitual protein intake in studies showing higher protein to be more effective than control was +28.6% compared to +4.9% when additional protein was no more effective than control. Providing a sufficient deviation from habitual intake appears to be an important factor in determining the success of additional protein in weight management interventions. A modest increase in dietary protein favorably effects body composition during weight management interventions.Nutrition & Metabolism 09/2012; 9(1):81. DOI:10.1186/1743-7075-9-81 · 3.36 Impact Factor
[Show abstract] [Hide abstract]
- "Review findings supporting the role of tea in weight management is consistent with Wolfram et al.'s (2006) review and Hursel et al.'s (2009) meta-analysis regarding the effects of catechin consumption on weight loss parameters. Hursel et al. (2009) conclude that catechin consumption has a modest but significant positive effect on weight loss and weight maintenance after a period of negative energy balance. On the basis of reviewed studies, they estimate that subjects consuming catechins lost 1.31 kg more weight, or gained on average 1.31 kg less weight, than people in the control groups. "
ABSTRACT: s0010 Abbreviations dlist0010 BC body composition BF% percent body fat BFM body fat mass BMI body mass index BP blood pressure BW body weight d day EE energy expenditure EGCG epigallocatechin-3-gallate HDL high-density-lipoprotein HR heart rate LDL low-density-lipoprotein RCT randomized clinical trial REE resting energy expenditure RQ respiratory quotient WC waist circumference WHR waist to hip ratio s0015 INTRODUCTION p0105 Obesity is a major global health epidemic that serves as a risk factor for cardiovascular disease, certain types of cancer, and type 2 diabetes through a cluster of metabolic disorders (Keller, 2006; Lin and Lin-Shiau 2006). A growing body of evidence suggests that phytochemicals from tea (Camellia sinensis L. (O.) Kuntze; Theaceae) may play an anti-obesity role via actions on thermogenesis, glucose and lipid absorption, and/or fat oxidation (Wolfram et al., 2006; Hursel et al., 2009). Polyphenolic catechins e the primary group of compounds associated with tea's health-protective claims e are also associated with tea's putative anti-obesity effects, along with the methylxanthine stimulant caffeine. The present chapter reviews the evidence available from randomized clinical trials (RCTs) on the potential role of tea in weight loss and weight maintenance over the past decade. This analysis informs our understanding of the 493Tea in Health and Disease Prevention, Edited by Victor Preedy, 01/2012: chapter 41; Elsevier Science and Technology.