title: Improvement in metabolic parameters in obese subjects after 16 weeks on a Brazilian-staple calorie-restricted diet.
abstract: OBJECTIVE
  The standard pattern of Brazilian food consumption is based on the combination of rice and beans served together in the main meals. This study assessed the effects of Brazilian-staple calorie-restricted (BS-diet) dietary advice, with brown rice and beans, on metabolic parameters, body composition, and food intake in overweight/obese subjects.
  
  
  METHODS
  Twentyseven subjects were randomly assigned to a conventional-type calorie-restricted diet (CT-diet) (n = 13) or a BS-diet (n = 14). Glucose metabolism, lipid profile, anthropometric and body composition parameters, and food intake were measured before and after 16 weeks. Paired t-tests/Wilcoxon tests were used for comparison of differences from baseline and unpaired t-tests/Mann-Whitney tests were used for comparison of differences between the groups.
  
  
  RESULTS
  After 16 weeks, both groups showed reductions in weight and waist circumference (P < 0.02), and the BS-diet group showed a decrease in body fat (P = 0.0001), and significant improvement in glucose metabolism (fasting plasma glucose, glucose and insulin areas under the curve, Cederholm index, and HOMA2-%β) (P ≤ 0.04) and lipid profile (cholesterol, triacylglycerol, LDL-c, VLDL-c, and cholesterol/HDL-c ratio) (P ≤ 0.05). In addition, the BS-diet group showed significant improvement in HOMA2-%β, compared to the CT-diet group (P = 0.03). The BS-diet group also showed a significant reduction in energy, lipids, carbohydrate, and cholesterol intake (P ≤ 0.04) and an increase in fiber intake (P ≤ 0.001), while the CT-diet group showed a significant reduction in intake of energy, macronutrients, PUFA, and cholesterol (P ≤ 0.002).
  
  
  CONCLUSIONS
  These results demonstrate the benefits of the BS-diet on metabolic parameters in obese subjects.
authors.affiliation: Department of Nutrition, Faculty of Health Sciences, University of Brasilia, CEP: 70.910-900, Brazilia-DF, Brazil.
authors.forename: Teresa H M
authors.initials: TH
authors.lastname: da Costa
authors.affiliation: Faculty of Health Science, University of Brasilia, DF, Brazil.
authors.forename: Caio E G
authors.initials: CE
authors.lastname: Reis
authors.affiliation: Faculty of Health Science, University of Brasilia, DF, Brazil.
authors.forename: Fábio V P
authors.initials: FV
authors.lastname: da Silva
authors.affiliation: Section of Endocrinology, University Hospital of Brasília, DF, Brazil.
authors.forename: Luiz A
authors.initials: LA
authors.lastname: Casulari
keywords: Glycemic index; beans; brown rice; obesity
references.citation: Am J Clin Nutr. 2002 May;75(5):834-9
references.pmid: 11976156
references.citation: J Am Diet Assoc. 2009 May;109(5):909-13
references.pmid: 19394480
references.citation: Obes Res. 2002 Jan;10(1):42-8
references.pmid: 11786600
references.citation: Lipids. 2010 Sep;45(9):765-75
references.pmid: 20734238
references.citation: J Appl Physiol (1985). 1986 Apr;60(4):1327-32
references.pmid: 3700310
references.citation: Br J Nutr. 2012 Aug;108 Suppl 1:S52-65
references.pmid: 22916816
references.citation: Eur J Clin Nutr. 2011 Jul;65 Suppl 1:S87-91
references.pmid: 21731011
references.citation: Diabetologia. 2009 Aug;52(8):1479-95
references.pmid: 19526214
references.citation: J Nurs Scholarsh. 2011 Dec;43(4):368-75
references.pmid: 22018175
references.citation: Rev Saude Publica. 2013 Feb;47 Suppl 1:190S-9S
references.pmid: 23703263
references.citation: Int J Circumpolar Health. 2013 Aug 05;72:
references.pmid: 23984293
references.citation: Eur J Clin Nutr. 2003 Jun;57(6):743-52
references.pmid: 12792658
references.citation: Med Sci Sports Exerc. 2011 Aug;43(8):1575-81
references.pmid: 21681120
references.citation: Atherosclerosis. 2010 Jan;208(1):3-9
references.pmid: 19595353
references.citation: J Nutr Biochem. 2011 May;22(5):446-9
references.pmid: 20655718
references.citation: Br J Nutr. 2009 Aug;102(4):576-83
references.pmid: 19216828
references.citation: J Am Coll Nutr. 1994 Dec;13(6):549-58
references.pmid: 7706585
references.citation: Am J Clin Nutr. 2008 Jan;87(1):269S-274S
references.pmid: 18175767
references.citation: Dtsch Arztebl Int. 2010 Aug;107(31-32):552-6
references.pmid: 20827353
references.citation: Arch Intern Med. 2010 Jun 14;170(11):961-9
references.pmid: 20548009
references.citation: Circulation. 2010 Mar 23;121(11):1356-64
references.pmid: 20308626
references.citation: Nutr J. 2012 Mar 14;11:13
references.pmid: 22417631
references.citation: Food Funct. 2010 Nov;1(2):149-55
references.pmid: 21776465
references.citation: Br J Nutr. 2011 Jul;106(2):196-202
references.pmid: 22844674
references.citation: Diabetes Res Clin Pract. 1990 Oct;10(2):167-75
references.pmid: 2261853
references.citation: Nutr J. 2011 Mar 17;10:24
references.pmid: 21414227
references.citation: Diabetes Res Clin Pract. 2006 May;72(2):219-20
references.pmid: 16310881
references.citation: Nutr J. 2012 Apr 11;11:23
references.pmid: 22494488
references.citation: Nutr Rev. 2011 Aug;69(8):479-88
references.pmid: 21790614
references.citation: Public Health Nutr. 2011 Sep;14(9):1579-85
references.pmid: 21241535
references.citation: Br J Nutr. 2012 Aug;108 Suppl 1:S111-22
references.pmid: 22916807
references.citation: Int J Food Sci Nutr. 2006 May-Jun;57(3-4):151-8
references.pmid: 17127465
references.citation: Br J Nutr. 2004 Feb;91(2):295-301
references.pmid: 14756916
references.citation: JAMA. 2001 May 16;285(19):2486-97
references.pmid: 11368702
references.citation: Am J Clin Nutr. 2012 Apr;95(4):989-94
references.pmid: 22434603
references.citation: N Engl J Med. 2009 Feb 26;360(9):859-73
references.pmid: 19246357
references.citation: Rev Saude Publica. 2005 Aug;39(4):530-40
references.pmid: 16113900
references.citation: Am J Clin Nutr. 2007 Feb;85(2):346-54
references.pmid: 17284728
references.citation: Lancet. 2011 Aug 27;378(9793):804-14
references.pmid: 21872749
references.citation: Nutr Res Rev. 2010 Jun;23(1):65-134
references.pmid: 20565994
references.citation: World Health Organ Tech Rep Ser. 2000;894:i-xii, 1-253
references.pmid: 11234459
references.citation: Nutr Hosp. 2011 Jan-Feb;26(1):48-55
references.pmid: 21519729
references.citation: Diabetes Care. 1998 Dec;21(12):2191-2
references.pmid: 9839117