High protein diets decrease total and abdominal fat and improve CVD risk profile in overweight and obese men and women with elevated triacylglycerol

被引:65
作者
Clifton, P. M. [1 ]
Bastiaans, K. [1 ]
Keogh, J. B. [1 ]
机构
[1] CSIRO Human Nutr, Adelaide, SA, Australia
基金
英国医学研究理事会;
关键词
High protein diet; Triacylglycerol; Abdominal fat; ENERGY-RESTRICTED DIETS; LOW-GLYCEMIC LOAD; WEIGHT-LOSS; BODY-COMPOSITION; CARDIOVASCULAR-DISEASE; POSTMENOPAUSAL WOMEN; MONOUNSATURATED FAT; INSULIN SENSITIVITY; RANDOMIZED-TRIAL; ADULT WOMEN;
D O I
10.1016/j.numecd.2008.10.006
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background and aims: It is unclear whether high protein weight loss diets have beneficial effects on weight Loss, abdominal fat mass, lipids, glucose and insulin compared to conventional low fat diets in subjects at increased risk of cardiovascular disease (CVD) because of elevated glucose and triglyceride concentrations. Our objective was to determine the effects of high protein (HP) compared to standard protein (SP) diets on CVD risk in obese adults. Methods and results: Data from three, 12 week, randomized parallel trials with subjects assigned to either HP or SP diet (5500-6500 kJ/day) were pooled. Weight, body composition (dual energy X-ray absorptiometry), lipids, insulin and glucose were measured before and after weight loss. Data from 215 subjects (49.9 +/- 9.8 years, BMI 33.5 +/- 3.7 kg/m2), 108 HP, 107 SP were analyzed. Weight loss (HP diet 7.82 +/- 0.37 kg; SP diet 7.65 +/- 0.39 kg, NS) and total fat toss were not different (HP 6.8 +/- 4.3 kg; LP 6.4 +/- 4.7 kg, NS on intention to treat analysis). The reduction in triacylglycerol. (TAG) was greater on HP than SP 0.48 +/- 0.07 mmol/L vs 0.27 +/- 0.06 mmol/L, (P < 0.001). Subjects with TAG greater than the median (>1.54 mmol/L. at baseline) lost more weight (HP 8.5 +/- 0.6; SP 6.9 +/- 0.6 kg, P = 0.01, diet by TG group), total (HP 6.17 +/- 0.50 kg; SP 4.52 +/- 0.52 kg, P = 0.007) and abdominal fat (HP 1.92 +/- 0.17 kg; SP 1.23 +/- 0.19 kg, P = 0.005) on HP. Total cholesterol (12 vs 6%, HP vs; SP) and TAG (39 vs 20%, HP vs SP) decreased to a greater extent in these subjects (both P <= 0.05) on HP. Conclusion: Short-term high protein weight loss diets had beneficial. effects on total cholesterol and triacylglycerol in overweight and obese subjects and achieved greater weight Loss and better lipid results in subjects at increased risk of CVD. These observations provide further information regarding the utility of this dietary approach in effectively managing body weight and composition and reducing CVD risk in overweight and obese individuals. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:548 / 554
页数:7
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