TY - JOUR
T1 - Effects of a carbohydrate-reduced high-protein diet delivered with meal kits to Danish people with type 2 diabetes
T2 - protocol for a 12-month randomised controlled trial
AU - Kopp, Luise H.P.
AU - Søgaard-Hansen, Christina M.
AU - Zachhau, Karen M.
AU - Bastkjær, Rasmus M.
AU - Andersen, Barbara V.
AU - Budtz-Jørgensen, Esben
AU - Byrne, Derek V.
AU - Chaaban, Nora
AU - Holst, Jens J.
AU - Klindt, Trine B.
AU - Magkos, Faidon
AU - Ozenne, Brice
AU - Samkani, Amirsalar
AU - Skytte, Mads J.
AU - Madsbad, Sten
AU - Krarup, Thure
AU - Thomsen, Mads N.
N1 - Publisher Copyright:
© Author(s) (or their employer(s)) 2024. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.
PY - 2024
Y1 - 2024
N2 - INTRODUCTION: The cornerstone in the management of type 2 diabetes (T2D) is lifestyle modification including a healthy diet, typically one in which carbohydrate provides 45%-60% of total energy intake (E%). Nevertheless, systematic reviews and meta-analyses of trials with low carbohydrate diets (which are increased in protein and/or fat) for T2D have found improved glycaemic control in the first months relative to comparator diets with higher carbohydrate content. Studies lasting ≥1 year are inconclusive, which could be due to decreased long-term dietary adherence. We hypothesise that glucometabolic benefits can be achieved following 12 months of carbohydrate-restricted dieting, by maximising dietary adherence through delivery of meal kits, containing fresh, high-quality ingredients for breakfast, dinner and snacks, combined with nutrition education and counselling. METHODS AND ANALYSIS: This protocol describes a 12-month investigator-initiated randomised controlled, open-label, superiority trial with two parallel groups that will examine the effect of a carbohydrate-reduced high-protein (CRHP) diet compared with a conventional diabetes (CD) diet on glucometabolic control (change in glycated haemoglobin being the primary outcome) in 100 individuals with T2D and body mass index (BMI) >25 kg/m2. Participants will be randomised 1:1 to receive either the CRHP or the CD diet (comprised 30/50 E% from carbohydrate, 30/17 E% from protein and 40/33 E% from fat, respectively) for 12 months delivered as meal kits, containing foods covering more than two-thirds of the participants' estimated daily energy requirements for weight maintenance. Adherence to the allocated diets will be reinforced by monthly sessions of nutrition education and counselling from registered clinical dietitians. ETHICS AND DISSEMINATION: The trial has been approved by the National Committee on Health Research Ethics of the Capital Region of Denmark. The trial will be conducted in accordance with the Declaration of Helsinki. Results will be submitted for publication in international peer-reviewed scientific journals. TRIAL REGISTRATION NUMBER: NCT05330247. PROTOCOL VERSION: The trial protocol was approved on 9 March 2022 (study number: H-21057605). The latest version of the protocol, described in this manuscript, was approved on 23 June 2023.
AB - INTRODUCTION: The cornerstone in the management of type 2 diabetes (T2D) is lifestyle modification including a healthy diet, typically one in which carbohydrate provides 45%-60% of total energy intake (E%). Nevertheless, systematic reviews and meta-analyses of trials with low carbohydrate diets (which are increased in protein and/or fat) for T2D have found improved glycaemic control in the first months relative to comparator diets with higher carbohydrate content. Studies lasting ≥1 year are inconclusive, which could be due to decreased long-term dietary adherence. We hypothesise that glucometabolic benefits can be achieved following 12 months of carbohydrate-restricted dieting, by maximising dietary adherence through delivery of meal kits, containing fresh, high-quality ingredients for breakfast, dinner and snacks, combined with nutrition education and counselling. METHODS AND ANALYSIS: This protocol describes a 12-month investigator-initiated randomised controlled, open-label, superiority trial with two parallel groups that will examine the effect of a carbohydrate-reduced high-protein (CRHP) diet compared with a conventional diabetes (CD) diet on glucometabolic control (change in glycated haemoglobin being the primary outcome) in 100 individuals with T2D and body mass index (BMI) >25 kg/m2. Participants will be randomised 1:1 to receive either the CRHP or the CD diet (comprised 30/50 E% from carbohydrate, 30/17 E% from protein and 40/33 E% from fat, respectively) for 12 months delivered as meal kits, containing foods covering more than two-thirds of the participants' estimated daily energy requirements for weight maintenance. Adherence to the allocated diets will be reinforced by monthly sessions of nutrition education and counselling from registered clinical dietitians. ETHICS AND DISSEMINATION: The trial has been approved by the National Committee on Health Research Ethics of the Capital Region of Denmark. The trial will be conducted in accordance with the Declaration of Helsinki. Results will be submitted for publication in international peer-reviewed scientific journals. TRIAL REGISTRATION NUMBER: NCT05330247. PROTOCOL VERSION: The trial protocol was approved on 9 March 2022 (study number: H-21057605). The latest version of the protocol, described in this manuscript, was approved on 23 June 2023.
KW - clinical trial
KW - diabetes & endocrinology
KW - general diabetes
KW - lipid disorders
KW - nutrition & dietetics
KW - obesity
U2 - 10.1136/bmjopen-2024-084686
DO - 10.1136/bmjopen-2024-084686
M3 - Journal article
C2 - 39142677
AN - SCOPUS:85201446669
VL - 14
JO - BMJ Open
JF - BMJ Open
SN - 2044-6055
IS - 8
M1 - e084686
ER -