Personalised Advice for the Prevention of Metabolic Syndrome

Study Overview
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Brief Summary
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Rationale: Improving dietary behaviours in view of optimising risk factors of metabolic syndrome requires behaviour change strategies. Tailored dietary advice, i.e. recommendations offered as a guide to action, can support behaviour change. In the current study we aim to learn how to better help consumers in their daily life to make lifestyle choices that better match their personal health target than their usual choices by providing personalised advice and feedback. In this study we target consumers at risk of metabolic syndrome (MetS) that are highly motivated to change their dietary behaviour in view of improving health. Objective: The primary objective is to investigate the potential of personalised dietary advice and feedback for initiating and maintaining dietary changes by consumers at risk of MetS. In addition we want to evaluate understanding, applicability and personal benefit of personalised dietary advice and feedback by the target population to be able to further optimize the personalisation in future studies. The secondary objective is to explore potential effects of personalised dietary advice and feedback on subjective health and metabolic health parameters. Study design: The study follows a one group pre-test post-test design with a duration of 16 weeks after the first advice is provided to the participants. Study population: In total 40 adult men and women at risk of metabolic syndrome will be recruited from the consumer databases of Wageningen Food & Biobased Research. Consumers are eligible for study participation when they are highly motivated to change dietary behaviour, willing to use technology, willing to share food purchase data as registered on a customer card of the supermarket, and in possession of a smart-phone. Intervention: The intervention consists of personalised dietary advice and feedback on actual behaviour and health status that will be provided to study participants at set time points throughout the study period. The content of the advice will be generated partly automated based on dietary intake and parameters of metabolic health using knowledge rules that are developed for this study. During a consultation with the dietician, the advice is then translated in a dietary behaviour change strategy by taking into account individual preferences through motivational interviewing. Main study parameters/endpoints: Primary outcomes of the study are the adequacy of intake of fruits, vegetables, whole grain products, dairy, fish, fats & oils, red meat, processed meat, and sweetened beverages & fruit juices as estimated by the online tool Eetscore. Furthermore consumer experiences and individual benefits of the provided personalised dietary advice are monitored on a weekly basis throughout the intervention period.

Official Title
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Personalised Dietary Advice for Highly Motivated Consumers at Risk of Metabolic Syndrome - a Pilot Study

Conditions
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Metabolic Syndrome, Protection Against

Intervention / Treatment
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* Behavioral: Personalised advise


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Having given written informed consent Aged 40 years or over At risk of metabolic syndrome Motivated to change behaviour Willing to use technology (digital platforms, activity tracker, digital questionnaires, apps) Customer of supermarket Albert Heijn (at least 1x per week) and in possession of customer card Willing to share food purchase data as registered with the Bonuskaart with the investigators In possession of I-phone or mobile phone with android system Exclusion Criteria: Use of medication known for its effects on blood glucose, cholesterol or insulin Suffering from diabetes Familial hypercholesterolemia Following a specific diet Having an alcohol consumption > 28 units/week for males and > 21 units (drinks)/week for females Does not accept that the general practitioner will be informed about participation of the study Having holidays planned for a period of more than two weeks during the intervention period

Ages Eligible for Study
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Minimum Age: 40 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Supportive Care
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Personalised advice<br> | Behavioral: Personalised advise<br>* personalised dietary advice in combination with feedback on dietary behaviour and health status (i.e. waist circumference, blood pressure, cholesterol, glucose and triglycerides)<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Dietary quality at baseline | Dietary quality was assessed by an online version of the Dutch Healthy Diet Index (DHDI) ('Eetscore', Division of Human Nutrition, Wageningen University). The DHDI evaluates adherence to the Dutch dietary guidelines per food category (score 1-10) and a total score (score 8-80). | Baseline (week 0) | 
| Dietary quality halfway | Dietary quality was assessed by an online version of the Dutch Healthy Diet Index (DHDI) ('Eetscore', Division of Human Nutrition, Wageningen University). The DHDI evaluates adherence to the Dutch dietary guidelines per food category (score 1-10) and a total score (score 8-80). | halfway (week 8) | 
| Dietary quality at study end | Dietary quality was assessed by an online version of the Dutch Healthy Diet Index (DHDI) ('Eetscore', Division of Human Nutrition, Wageningen University). The DHDI evaluates adherence to the Dutch dietary guidelines per food category (score 1-10) and a total score (score 8-80). | study end (week 16) | 
| Consumer experiences | Questionnaire to evaluate experiences with personalized advice and feedback | study end (week 16) | 
| Changes in Self perceived health during study period | questionnaire to evaluate 1-self-perceived health status, 2-healthiness of the diet and 3-satisfaction with actual diet. Items All items were evaluated on a 7-point scale. For items 1 and 2, the scale ranged from 1=very unhealthy up to 7=very healthy. For item 3, the scale ranged from 1=very unsatisfied up to 7=very satisfied | Baseline (week 0) and study end (week 16) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Waist circumference | in cm | Baseline (week 0), halfway (week 8) and study end (week 16) | 
| Body weight | measured on a calibrated weighing scale to the nearest 0.1 kg | Baseline (week 0), halfway (week 8) and study end (week 16) | 
| Blood pressure | in mmHg, measured in finger prick blood by research nurse with the Medisana upper-arm blood pressure monitor | Baseline (week 0), halfway (week 8) and study end (week 16) | 
| Lipid profile (HDL and LDL cholesterol, triglycerides) | measured in finger prick blood by research nurse by the Mission Cholesterol 3-1 device | Baseline (week 0), halfway (week 8) and study end (week 16) | 
| Glucose | measured in finger prick blood by research nurse by the Meditouch 2 device | Baseline (week 0), halfway (week 8) and study end (week 16) | 
| C-peptide | assessed in dried blood spots by high performance liquid chromatography with ultraviolet detection and liquid chromatography mass spectrometry | Baseline (week 0), halfway (week 8) and study end (week 16) | 
| Carotenoids in blood | assessed in dried blood spots by high performance liquid chromatography with ultraviolet detection and liquid chromatography mass spectrometry | Baseline (week 0), halfway (week 8) and study end (week 16) | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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personalised dietary advice, metabolic syndrome, dietary behaviour