Diabetes Nutrition Algorithm - Prediabetes

NCT ID: NCT02609243

Last Updated: 2020-06-24

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

250 participants

Study Classification

INTERVENTIONAL

Study Start Date

2013-07-31

Study Completion Date

2021-12-31

Brief Summary

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Prediabetes, defined by either impaired fasting glucose and/or impaired glucose tolerance, is a known high-risk condition predisposing to future diabetes mellitus type 2. Strategies to prevent progression from prediabetes to diabetes have been widely studied, however, without striking long-term effects of any kind of intervention (pharmacological, behavioral...). The investigators therefore investigate certain nutritional approaches concerning nutrient content and favorable food components, targeting metabolic improvement.

Detailed Description

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Prediabetes, defined by either impaired fasting glucose and/or impaired glucose tolerance, is a known high-risk condition predisposing to future diabetes mellitus type 2. Strategies to prevent progression from prediabetes to diabetes have been widely studied, however, without striking long-term effects of any kind of intervention (pharmacological, behavioral...). The investigators therefore investigate certain nutritional approaches concerning nutrient content and favorable food components, targeting metabolic improvement.

The main comparison will assess differences in metabolic outcome due to low-carb or low-fat dietary intervention in short- and long-term design.

Additionally, the role of PUFA will be assessed during long-term intervention to achieve better maintenance of metabolic improvements from the first study phase.

Conditions

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Prediabetes Diabetes Mellitus Type 2 Obesity NAFLD Dyslipoproteinemia

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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intensive consulting, conventional diet

subjects receive 16 units of nutritional consulting, first 3 weeks of intervention phase are designed as a conventional hypocaloric low-fat diet referring to DGE guidelines (below 30 % fat), followed by 11 months of isocaloric-to-moderate-hypocaloric low-fat diet (below 30 kcal% fat ) - dietary intervention without supplement

Group Type ACTIVE_COMPARATOR

dietary consulting

Intervention Type BEHAVIORAL

dietary consulting implies specific dietary advice based on pre-interventional self-report regarding food intake; consulting focuses on nutrient content, calory intake, weight loss; with regard to randomisation consulting intensity and content varies

conventional consulting, low-carb diet

subjects receive 8 units of nutritional consulting, first 3 weeks of intervention phase are designed as a very-low calory ketogenic (low-carb) diet (\< 40 g CH / day), following 11 months are restricted to not more than 40 % energy intake by carbohydrates under isocaloric-to-moderate-hypocaloric conditions - dietary intervention without supplement

Group Type ACTIVE_COMPARATOR

dietary consulting

Intervention Type BEHAVIORAL

dietary consulting implies specific dietary advice based on pre-interventional self-report regarding food intake; consulting focuses on nutrient content, calory intake, weight loss; with regard to randomisation consulting intensity and content varies

conventional consulting, conventional diet

subjects receive 8 units of nutritional consulting, first 3 weeks of intervention phase are designed as a conventional hypocaloric low-fat diet referring to DGE guidelines (below 30 % fat), followed by 11 months of isocaloric-to-moderate-hypocaloric low-fat diet (below 30 kcal% fat) - dietary intervention without supplement

Group Type ACTIVE_COMPARATOR

dietary consulting

Intervention Type BEHAVIORAL

dietary consulting implies specific dietary advice based on pre-interventional self-report regarding food intake; consulting focuses on nutrient content, calory intake, weight loss; with regard to randomisation consulting intensity and content varies

intensive consulting, low-carb diet

subjects receive 16 units of nutritional consulting, first 3 weeks of intervention phase are designed as a very-low calory ketogenic (low-carb) diet (\< 40 g CH / day), following 11 months are restricted to not more than 40 % energy intake by carbohydrates under isocaloric-to-moderate-hypocaloric conditions - dietary intervention without supplement

Group Type ACTIVE_COMPARATOR

dietary consulting

Intervention Type BEHAVIORAL

dietary consulting implies specific dietary advice based on pre-interventional self-report regarding food intake; consulting focuses on nutrient content, calory intake, weight loss; with regard to randomisation consulting intensity and content varies

Interventions

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dietary consulting

dietary consulting implies specific dietary advice based on pre-interventional self-report regarding food intake; consulting focuses on nutrient content, calory intake, weight loss; with regard to randomisation consulting intensity and content varies

Intervention Type BEHAVIORAL

Other Intervention Names

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dietary intervention without supplement

Eligibility Criteria

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Inclusion Criteria

* impaired fasting glucose (IFG) fasting blood glucose 100-126 mg/dl

and/or

* impaired glucose tolerance (IGT) 75 g OGTT 120 minutes: 140-200 mg/dl

Exclusion Criteria

* current pregnancy or breastfeeding
* BMI \> 45 kg/m²
* Diabetes mellitus Typ 1 or 2
* serious disease e.g symptomatic coronary heart disease
* serious symptomatic malignant disease (weight loss \> 10% within the last 6 month)
* severe liver or kidney disease ( an increase in transaminases \> 3 times than the upper limit of the standardized range, GFR \< 50 ml/min/1,73m²)
* systemic infection (CRP \> 1 mg/dl)
* severe mental illness
* drug abuse
* treatment with steroids
* potentially incompliant subjects
* any kind of metal in or on the body: cardiac pacemakers prosthetic heart valves metal prosthesis magnetic implanted metallic parts contraceptive coil metal fragments/ grenade shrapnel fixed braces acupuncture needles insulin pump intraport etc. Field strength \> 3 Tesla further tattoos, permanent make-up
* persons with limited thermosensory or heightened sensitivity to heating
* persons where cardiovascular disease cannot be ruled out by examination
* persons with heightened sensitivity to loud noise or diseases of the ear
* used closed whole body scanner: claustrophobia
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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German Diabetes Center

OTHER

Sponsor Role collaborator

German Institute of Human Nutrition

OTHER

Sponsor Role lead

Responsible Party

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Prof. Dr. med. Andreas F. H. Pfeiffer

Director / Department for Clinical Nutrition

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Andreas FH Pfeiffer, Prof. Dr.

Role: PRINCIPAL_INVESTIGATOR

German Institute of Human Nutrition

Locations

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German Institut for Human Nutrition; Department for Clinical Nutrition

Bergholz-Rehbrücke, Brandenburg, Germany

Site Status RECRUITING

German Institute for Human Nutrition, Department for Clinical Nutrition

Berlin, , Germany

Site Status RECRUITING

Countries

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Germany

Central Contacts

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Stefan Kabisch, Dr. med.

Role: CONTACT

030 450 514 ext. 429

Margrit Kemper, Dr.

Role: CONTACT

033200 88 2775

Facility Contacts

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Margrit Kemper, Dr. med.

Role: primary

033200 88 2775

Silke Hornemann

Role: backup

033200 88 2779

Stefan Kabisch, Dr. med.

Role: primary

030 450 514 ext. 429

Ulrike Kaiser, M.sc.

Role: backup

030 450 514 ext. 428

Other Identifiers

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DiNA-P

Identifier Type: -

Identifier Source: org_study_id

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