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A hypocaloric diet rich in high fiber rye foods causes greater reduction in body weight and body fat than a diet rich in refined wheat: A parallel randomized controlled trial in adults with overweight and obesity (the RyeWeight study)

Iversen, Kia Nohr and Carlsson, Frida and Andersson, Agneta and Michaelsson, Karl and Langton, Maud and Riserus, Ulf and Hellstrom, Per M. and Landberg, Rikard (2021). A hypocaloric diet rich in high fiber rye foods causes greater reduction in body weight and body fat than a diet rich in refined wheat: A parallel randomized controlled trial in adults with overweight and obesity (the RyeWeight study). Clinical Nutrition ESPEN. 45 , 155-169
[Research article]

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Abstract

Background and aim: A high intake of whole grain foods is inversely associated with body mass index (BMI) and body fat in observational studies, but mixed results have been found in interventional studies. Among whole grains, rye is the richest source of dietary fiber and meals containing high-fiber rye foods have shown increased satiety up to 8 h, compared to meals containing refined wheat products. The aim of the study was to determine the effect of consuming high fiber rye products, compared to refined wheat products, on body weight and body fat loss in the context of an energy restricted diet.Methods: After a 2-week run-in period, 242 males and females with overweight or obesity (BMI 27-35 kg/m(2)), aged 30-70 years, were randomized (1:1) to consume high fiber rye products or refined wheat products for 12 weeks, while adhering to a hypocaloric diet. At week 0, week 6 and week 12 body weight and body composition (dual energy x-ray absorptiometry) was measured and fasting blood samples were collected. Subjective appetite was evaluated for 14 h at week 0, 6 and 12.Results: After 12 weeks the participants in the rye group had lost 1.08 kg body weight and 0.54% body fat more than the wheat group (95% confidence interval (CI): 0.36; 1.80, p < 0.01 and 0.05; 1.03, p 1/4 0.03, respectively). C-reactive protein was 28% lower in the rye vs wheat group after 12 weeks of intervention (CI: 7; 53, p < 0.01). There were no consistent group differences on subjective appetite or on other cardiometabolic risk markers.Conclusion: Consumption of high fiber rye products as part of a hypocaloric diet for 12 weeks caused a greater weight loss and body fat loss, as well as reduction in C-reactive protein, compared to refined wheat. The difference in weight loss could not be linked to differences in appetite response. (C) 2021 The Author(s). Published by Elsevier Ltd on behalf of European Society for Clinical Nutrition and Metabolism.

Authors/Creators:Iversen, Kia Nohr and Carlsson, Frida and Andersson, Agneta and Michaelsson, Karl and Langton, Maud and Riserus, Ulf and Hellstrom, Per M. and Landberg, Rikard
Title:A hypocaloric diet rich in high fiber rye foods causes greater reduction in body weight and body fat than a diet rich in refined wheat: A parallel randomized controlled trial in adults with overweight and obesity (the RyeWeight study)
Series Name/Journal:Clinical Nutrition ESPEN
Year of publishing :2021
Volume:45
Page range:155-169
Number of Pages:15
Publisher:ELSEVIER
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 3 Medical and Health Sciences > 303 Health Sciences > Nutrition and Dietetics
Keywords:Rye, Wheat, Cereals, Weight loss, Body fat reduction, Appetite regulation
URN:NBN:urn:nbn:se:slu:epsilon-p-116355
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-116355
Additional ID:
Type of IDID
DOI10.1016/j.clnesp.2021.07.007
Web of Science (WoS)000729956100018
ID Code:27297
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Department of Molecular Sciences
Deposited By: SLUpub Connector
Deposited On:11 Mar 2022 10:25
Metadata Last Modified:11 Mar 2022 10:31

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