NCT00992641

Brief Summary

SYSDIET (Systems biology in controlled dietary interventions and cohort studies) is one of the three centres in the NCoE Food, Nutrition and Health, 2007-2011. It consists of 12 partners from five Nordic countries working on multidisciplinary fields of science related to nutritional biology. The main objective of SYSDIET is to reveal mechanisms by which Nordic foods and diets could be modified to promote health and prevent insulin resistance, type 2 diabetes and cardiovascular diseases, all of which being connected to metabolic syndrome. Furthermore, the aim is to build up a Nordic platform for cohort studies and carefully conducted multi-centre dietary intervention studies, where novel nutritional systems biology tools can be applied besides human studies also in animal and cell culture studies. In order to achieve the main objective a Nordic multi-centre randomized controlled human intervention study is being conducted in 2009-2010 in 6-8 centres of SYSDIET consortium. Health of the Nordic populations has substantially improved during the last 30 years. This is due e.g. to marked decline in cardiovascular morbidity and mortality. However, during the last 10-20 years increasing obesity and sedentary lifestyle have resulted in an increase of metabolic syndrome and type 2 diabetes. Having this background, the aim of the SYSDIET consortium is to carry out a controlled, randomized dietary intervention study in persons with features of metabolic syndrome to find out the effects of a healthy Nordic food on major abnormalities in metabolic syndrome. Altogether 167 persons aged 30 to 65 years were recruited from 6-8 centers (40-60 subjects/center) of the SYSDIET cohort. The main inclusion criterion is BMI 27-38 kg/m2. The subjects should also have at least two other IDF criteria for metabolic syndrome. Recruited persons will start the study by following their conventional diet for one month as a run-in period. After that subjects will be randomly assigned into Experimental- or Control-diet-group for 6 months. Experimental diet is rich in whole grain products, berries, fruits, vegetables and fish, and its fat intake is modified according to current Nordic recommendations. Control diet is based on the current information of the mean dietary intake and food consumption. The diets will be realized according to eating habits in each Nordic country.

Trial Health

93
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
167

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Aug 2009

Typical duration for not_applicable

Geographic Reach
5 countries

8 active sites

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

August 1, 2009

Completed
2 months until next milestone

First Submitted

Initial submission to the registry

October 7, 2009

Completed
2 days until next milestone

First Posted

Study publicly available on registry

October 9, 2009

Completed
1.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 1, 2010

Completed
1.1 years until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2011

Completed
Last Updated

April 17, 2012

Status Verified

April 1, 2012

Enrollment Period

1.3 years

First QC Date

October 7, 2009

Last Update Submit

April 16, 2012

Conditions

Keywords

Systems biologyNutritionNordic dietDietary recommendationsMetabolic syndromeFeatures of metabolic syndrome

Outcome Measures

Primary Outcomes (3)

  • Glucose metabolism

    Study weeks 0

  • Glucose metabolism

    12 weeks

  • Glucose metabolism

    24 weeks

Secondary Outcomes (3)

  • Transcriptomics and metabolomics data

    Study week 0

  • Transcriptomics and metabolomics data

    12 weeks

  • Transcriptomics and metabolomics data

    24 weeks

Study Arms (2)

Experimental diet

EXPERIMENTAL

Diet based on Nordic recommendations: rich in whole grain products, berries, fruits and vegetables, recommended fat quality. Realised based on eating habits of each Nordic country.

Other: Experimental diet

Control diet

ACTIVE COMPARATOR

Diet based on the information of the current dietary intake and food consumption in Nordic countries.

Other: Control diet

Interventions

Diet based on Nordic recommendations: rich in whole grain products, berries, fruits and vegetables, recommended fat quality. Realised based on eating habits of each Nordic country.

Experimental diet

Diet based on the information of the current dietary intake and food consumption in Nordic countries.

Control diet

Eligibility Criteria

Age30 Years - 65 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Age 30-65 years old
  • BMI 27-38 kg/m2
  • \+ two other IDF criteria for metabolic syndrome
  • Anti-hypertensives and lipid-lowering medication are allowed

You may not qualify if:

  • Fasting plasma glucose \> 7.0 mmol/l
  • Fasting plasma triglycerides \> 3.0 mmol/l
  • Fasting plasma total cholesterol \> 6.5 mmol/l
  • Blood pressure \> 160/100 mmHg
  • Preceding weight change of 5% or more or active weight loss during preceding 6 months
  • Any disease or condition that may hamper the successful participation of the intervention: liver disease, kidney disease, diabetes (both type 1 and type 2), thyroid disease (Newly found unstabilized disease), Myocardial infarction within previous 6 months
  • Alcohol abuse (\> 40 g/day)
  • Oral corticosteroid therapy
  • Severe psychiatric disorders
  • Cancer under treatment
  • Coeliac disease
  • Exceptional diets (Atkin's, vegan, allergies to fish or cereals, other extensive allergies)
  • Binge eating
  • Unwillingness to discontinue the use of fish and vegetable oil or stanol and sterol ester supplements or products

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (8)

Aarhus University

Aarhus, Denmark

Location

University of Copenhagen

Copenhagen, Denmark

Location

University of Kuopio

Kuopio, FIN-70211, Finland

Location

University of Oulu

Oulu, Finland

Location

University of Iceland

Reykjavik, Iceland

Location

Akershus University College

Akershus, Norway

Location

Lund University

Lund, Sweden

Location

Uppsala University

Uppsala, Sweden

Location

Related Publications (7)

  • Gurdeniz G, Uusitupa M, Hermansen K, Savolainen MJ, Schwab U, Kolehmainen M, Brader L, Cloetens L, Herzig KH, Hukkanen J, Rosqvist F, Ulven SM, Gunnarsdottir I, Thorsdottir I, Oresic M, Poutanen KS, Riserus U, Akesson B, Dragsted LO. Analysis of the SYSDIET Healthy Nordic Diet randomized trial based on metabolic profiling reveal beneficial effects on glucose metabolism and blood lipids. Clin Nutr. 2022 Feb;41(2):441-451. doi: 10.1016/j.clnu.2021.12.031. Epub 2021 Dec 25.

  • Tuomainen M, Karkkainen O, Leppanen J, Auriola S, Lehtonen M, Savolainen MJ, Hermansen K, Riserus U, Akesson B, Thorsdottir I, Kolehmainen M, Uusitupa M, Poutanen K, Schwab U, Hanhineva K. Quantitative assessment of betainized compounds and associations with dietary and metabolic biomarkers in the randomized study of the healthy Nordic diet (SYSDIET). Am J Clin Nutr. 2019 Nov 1;110(5):1108-1118. doi: 10.1093/ajcn/nqz179.

  • Lankinen M, Schwab U, Kolehmainen M, Paananen J, Nygren H, Seppanen-Laakso T, Poutanen K, Hyotylainen T, Riserus U, Savolainen MJ, Hukkanen J, Brader L, Marklund M, Rosqvist F, Hermansen K, Cloetens L, Onning G, Thorsdottir I, Gunnarsdottir I, Akesson B, Dragsted LO, Uusitupa M, Oresic M. A Healthy Nordic Diet Alters the Plasma Lipidomic Profile in Adults with Features of Metabolic Syndrome in a Multicenter Randomized Dietary Intervention. J Nutr. 2015 Apr 1;146(4):662-672. doi: 10.3945/jn.115.220459.

  • Kolehmainen M, Ulven SM, Paananen J, de Mello V, Schwab U, Carlberg C, Myhrstad M, Pihlajamaki J, Dungner E, Sjolin E, Gunnarsdottir I, Cloetens L, Landin-Olsson M, Akesson B, Rosqvist F, Hukkanen J, Herzig KH, Dragsted LO, Savolainen MJ, Brader L, Hermansen K, Riserus U, Thorsdottir I, Poutanen KS, Uusitupa M, Arner P, Dahlman I. Healthy Nordic diet downregulates the expression of genes involved in inflammation in subcutaneous adipose tissue in individuals with features of the metabolic syndrome. Am J Clin Nutr. 2015 Jan;101(1):228-39. doi: 10.3945/ajcn.114.092783. Epub 2014 Nov 19.

  • Magnusdottir OK, Landberg R, Gunnarsdottir I, Cloetens L, Akesson B, Rosqvist F, Schwab U, Herzig KH, Hukkanen J, Savolainen MJ, Brader L, Hermansen K, Kolehmainen M, Poutanen K, Uusitupa M, Riserus U, Thorsdottir I. Whole grain rye intake, reflected by a biomarker, is associated with favorable blood lipid outcomes in subjects with the metabolic syndrome--a randomized study. PLoS One. 2014 Oct 23;9(10):e110827. doi: 10.1371/journal.pone.0110827. eCollection 2014.

  • Marklund M, Magnusdottir OK, Rosqvist F, Cloetens L, Landberg R, Kolehmainen M, Brader L, Hermansen K, Poutanen KS, Herzig KH, Hukkanen J, Savolainen MJ, Dragsted LO, Schwab U, Paananen J, Uusitupa M, Akesson B, Thorsdottir I, Riserus U. A dietary biomarker approach captures compliance and cardiometabolic effects of a healthy Nordic diet in individuals with metabolic syndrome. J Nutr. 2014 Oct;144(10):1642-9. doi: 10.3945/jn.114.193771. Epub 2014 Jul 30.

  • Uusitupa M, Hermansen K, Savolainen MJ, Schwab U, Kolehmainen M, Brader L, Mortensen LS, Cloetens L, Johansson-Persson A, Onning G, Landin-Olsson M, Herzig KH, Hukkanen J, Rosqvist F, Iggman D, Paananen J, Pulkki KJ, Siloaho M, Dragsted L, Barri T, Overvad K, Bach Knudsen KE, Hedemann MS, Arner P, Dahlman I, Borge GI, Baardseth P, Ulven SM, Gunnarsdottir I, Jonsdottir S, Thorsdottir I, Oresic M, Poutanen KS, Riserus U, Akesson B. Effects of an isocaloric healthy Nordic diet on insulin sensitivity, lipid profile and inflammation markers in metabolic syndrome -- a randomized study (SYSDIET). J Intern Med. 2013 Jul;274(1):52-66. doi: 10.1111/joim.12044. Epub 2013 Mar 2.

Related Links

MeSH Terms

Conditions

Obesity, AbdominalInsulin ResistanceGlucose IntoleranceDiabetes Mellitus, Type 2Cardiovascular DiseasesMetabolic Syndrome

Condition Hierarchy (Ancestors)

ObesityOverweightOvernutritionNutrition DisordersNutritional and Metabolic DiseasesBody WeightSigns and SymptomsPathological Conditions, Signs and SymptomsHyperinsulinismGlucose Metabolism DisordersMetabolic DiseasesHyperglycemiaDiabetes MellitusEndocrine System Diseases

Study Officials

  • Lars Dragsted, Prof

    University of Copenhagen

    PRINCIPAL INVESTIGATOR
  • Kjeld Hermansen, Prof

    Aarhus University Hospital, Denmark

    PRINCIPAL INVESTIGATOR
  • Kaisa Poutanen, Prof

    University of Kuopio, Finland

    STUDY DIRECTOR
  • Matti Uusitupa, Prof

    University of Kuopio, Finland

    STUDY DIRECTOR
  • Inga Thorsdottir, Prof

    University of Iceland, Iceland

    PRINCIPAL INVESTIGATOR
  • Markku Savolainen, Prof

    University of Oulu, Finland

    PRINCIPAL INVESTIGATOR
  • Karl-Heinz Herzig, Prof

    University of Oulu, Finland

    PRINCIPAL INVESTIGATOR
  • Stine M Ulven, Assoc prof

    Akershus University College, Norway

    PRINCIPAL INVESTIGATOR
  • Ulf Riserus, Prof

    Uppsala University, Sweden

    PRINCIPAL INVESTIGATOR
  • Björn Åkesson, Prof

    Lund University

    PRINCIPAL INVESTIGATOR
  • Peter Arner, Prof

    Karolinska Institutet

    PRINCIPAL INVESTIGATOR
  • Matej Oresic, Prof

    VTT Technical Research Centre, Finland

    PRINCIPAL INVESTIGATOR
  • Kim Overvad, Prof

    Aalborg Hospital, Denmark

    PRINCIPAL INVESTIGATOR
  • Carsten Carlberg, Prof

    University of Kuopio, Finland

    PRINCIPAL INVESTIGATOR
  • Grether I Borge, Senior Scientist

    Nofima Foods, Norway

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Senior scientist

Study Record Dates

First Submitted

October 7, 2009

First Posted

October 9, 2009

Study Start

August 1, 2009

Primary Completion

November 1, 2010

Study Completion

December 1, 2011

Last Updated

April 17, 2012

Record last verified: 2012-04

Locations