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Whole grain and body weight changes in apparently healthy adults: a systematic review and meta-analysis of randomized controlled studies

Pol, Korrie ; Christensen, Robin ; Bartels, Else M ; Raben, Anne ; Tetens, Inge ; Kristensen, Mette

The American journal of clinical nutrition, 2013-10, Vol.98 (4), p.872-884 [Periódico revisado por pares]

Bethesda, MD: American Society for Clinical Nutrition

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Título:
Whole grain and body weight changes in apparently healthy adults: a systematic review and meta-analysis of randomized controlled studies
Autor: Pol, Korrie ; Christensen, Robin ; Bartels, Else M ; Raben, Anne ; Tetens, Inge ; Kristensen, Mette
Assuntos: Adipose Tissue ; Adiposity ; Adolescent ; Adult ; adults ; Aged ; Biological and medical sciences ; Body Composition - physiology ; body fat ; Body Mass Index ; Body Weight - physiology ; body weight changes ; clinical nutrition ; Clinical trials ; cohort studies ; Consumption ; Diet ; Dietary Fiber - administration & dosage ; Edible Grain ; experimental design ; Feeding. Feeding behavior ; Female ; Food Handling ; Fundamental and applied biological sciences. Psychology ; Grain ; grain consumption ; Humans ; Male ; meta-analysis ; Middle Aged ; Randomized Controlled Trials as Topic ; Research Design ; Systematic review ; Vertebrates: anatomy and physiology, studies on body, several organs or systems ; Waist Circumference ; Weight ; weight gain ; Weight Loss ; whole grain foods
É parte de: The American journal of clinical nutrition, 2013-10, Vol.98 (4), p.872-884
Notas: http://dx.doi.org/10.3945/ajcn.113.064659
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Descrição: Background: Whole grains have received increased attention for their potential role in weight regulation. A high intake has been associated with smaller weight gain in prospective cohort studies, whereas the evidence from randomized controlled studies has been less consistent.Objective: We assessed the effects of whole-grain compared with non–whole-grain foods on changes in body weight, percentage of body fat, and waist circumference by using a meta-analytic approach.Design: We conducted a systematic literature search in selected databases. Studies were included in the review if they were randomized controlled studies of whole-grain compared with a non–whole-grain control in adults. A total of 2516 articles were screened for eligibility, and relevant data were extracted from 26 studies. Weighted mean differences were calculated, and a metaregression analysis was performed by using the whole-grain dose (g/d).Results: Data from 2060 participants were included. Whole-grain intake did not show any effect on body weight (weighted difference: 0.06 kg; 95% CI: −0.09, 0.20 kg; P = 0.45), but a small effect on the percentage of body fat was seen (weighted difference: −0.48%; 95% CI: −0.95%, −0.01%; P = 0.04) compared with that for a control. An examination of the impact of daily whole-grain intake could predict differences between groups, but there was no significant association (β = −0.0013 kg × g/d; 95% CI: −0.011, 0.009 kg × g/d).Conclusions: Whole-grain consumption does not decrease body weight compared with control consumption, but a small beneficial effect on body fat may be present. The relatively short duration of intervention studies (≤16 wk) may explain the lack of difference in body weight and fat. Discrepancies between studies may be caused by differences in study design.
Editor: Bethesda, MD: American Society for Clinical Nutrition
Idioma: Inglês

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Whole grain and body weight changes in apparently healthy adults: a systematic review and meta-analysis of randomized controlled studies

Pol, Korrie ; Christensen, Robin ; Bartels, Else M ; Raben, Anne ; Tetens, Inge ; Kristensen, Mette

Bethesda, MD: American Society for Clinical Nutrition

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