Effects of Intermittent Fasting and Exercise on Inflammation, Metabolism, and the Microbiome in Metabolic Syndrome

NCT ID: NCT06885255

Last Updated: 2025-03-20

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

RECRUITING

Clinical Phase

NA

Total Enrollment

250 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-06-01

Study Completion Date

2026-03-31

Brief Summary

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The goal of this intervention trial is to assess the effects of intermittent fasting, both alone and in combination with high-intensity interval training, on patients with obesity and metabolic syndrome. The main question it aims to answer is:

Does intermittent fasting, with or without high-intensity interval training, reduce chronic inflammation in patients with obesity and metabolic syndrome?

Participants will follow an intermittent fasting regime for 3 months, with one intervention group additionally participating in high-intensity interval training twice a week. In addition, there are two control groups: one consisting of participants with metabolic syndrome and one consisting of generally healthy individuals. The study includes a 3-month intervention phase followed by a 3-month follow-up phase. During the 6-month study period, all participants will attend 6 in-house study visits and 2 phone visits, during which they will undergo assessments and receive nutritional counseling.

Detailed Description

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Conditions

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Metabolic Syndrome Obesity and Obesity-related Medical Conditions

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Metabolic syndrome - alternate day fasting

Patients with metabolic syndrome who undergo alternate-day fasting in addition to regular advice on the mediterranean diet

Group Type EXPERIMENTAL

Alternate day fasting

Intervention Type OTHER

Participants are instructed to alternate between consuming 100% of their usual energy intake on one day and only 25% on the following day.

Metabolic syndrome - time restricted eating

Patients with metabolic syndrome who undergo time restricted eating in addition to regular advice on the mediterranean diet

Group Type EXPERIMENTAL

Time restricted eating

Intervention Type OTHER

Subjects are instructed to limit their energy intake to 8 hours a day and to fast for the remaining 16 hours.

Metabolic syndrome - time restricted eating plus high-intensity interval training

Patients with metabolic syndrome who undergo time restricted eating plus high-intensity interval training in addition to regular advice on the mediterranean diet

Group Type EXPERIMENTAL

Time restricted eating

Intervention Type OTHER

Subjects are instructed to limit their energy intake to 8 hours a day and to fast for the remaining 16 hours.

High-intensity interval training

Intervention Type OTHER

Patients participate in high-intensity interval training.

Metabolic syndrome - controls

Patients with metabolic syndrome exclusively receiving regular advice on the mediterranean diet

Group Type NO_INTERVENTION

No interventions assigned to this group

Healthy - controls

Healthy controls exclusively receiving regular advice on the mediterranean diet

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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Alternate day fasting

Participants are instructed to alternate between consuming 100% of their usual energy intake on one day and only 25% on the following day.

Intervention Type OTHER

Time restricted eating

Subjects are instructed to limit their energy intake to 8 hours a day and to fast for the remaining 16 hours.

Intervention Type OTHER

High-intensity interval training

Patients participate in high-intensity interval training.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Written consent to participate in the study.
* Persons aged 18 years and older.
* Diagnosis of Metabolic Syndrome (MetS) with elevated hsCRP.

Exclusion Criteria

* Pregnant or nursing individuals.
* Cardiovascular diseases or orthopedic restrictions that prevent exercise.
* Use of medication or supplements that significantly affect study outcomes (e.g., anti-inflammatory medications, antibiotics within the last 6 weeks).
* Body weight greater than 200 kg (maximum capacity of training equipment).
* Individuals with mental illnesses that may impair their ability to understand or participate in the study.
Minimum Eligible Age

18 Years

Maximum Eligible Age

80 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Erlangen-Nürnberg Medical School

OTHER

Sponsor Role lead

Responsible Party

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yurdagül zopf

Professor of Integrative Medicine with a Focus on Nutritional Medicine (W3), Director of the Hector Center for Nutrition, Exercise, and Sports

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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Hector-Center for Nutrition, Exercise and Sports, University Hospital Erlangen

Erlangen, Bavaria, Germany

Site Status RECRUITING

Countries

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Germany

Central Contacts

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Prof. Dr. med. Yurdagül Zopf

Role: CONTACT

0049091318545220

Facility Contacts

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Prof. Dr. med. Yurdagül Zopf

Role: primary

0049091318545220

Other Identifiers

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22-60_2-B

Identifier Type: -

Identifier Source: org_study_id

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