Meal Glycaemic Index and Exercise After Gastric Bypass

NCT ID: NCT03478098

Last Updated: 2023-06-15

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

COMPLETED

Clinical Phase

NA

Total Enrollment

20 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-03-01

Study Completion Date

2020-03-01

Brief Summary

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The study will evaluate postprandial glucose excursions and gut hormone secretion after ingestion of meals with different glycaemic index (GI) values (high vs low) followed by an acute bout of exercise or rest in gastric bypass operated subjects and matched control subjects.

Detailed Description

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Conditions

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Roux-en-Y Gastric Bypass Obesity

Study Design

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Allocation Method

NON_RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

PREVENTION

Blinding Strategy

NONE

Study Groups

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10 Roux-en-Y Gastric Bypass patients

4 study days in randomized order are conducted with interventions: Low GI mealtest, High GI mealtest, Low GI mealtest and subsequent exercise, High GI mealtest and subsequent exercise

Group Type EXPERIMENTAL

Low GI mealtest

Intervention Type OTHER

Meal with low glycaemic index (GI) is consumed over 20 min

Low GI mealtest and subsequent exercise

Intervention Type OTHER

Meal with low glycaemic index (GI) is consumed over 20 min and the subject postprandially exercises for 30 min

High GI mealtest

Intervention Type OTHER

Meal with high glycaemic index (GI) is consumed over 20 min

High GI mealtest and subsequent exercise

Intervention Type OTHER

Meal with high glycaemic index (GI) is consumed over 20 min and the subject postprandially exercises for 30 min

10 control subjects

4 study days in randomized order are conducted with interventions: Low GI mealtest, High GI mealtest, Low GI mealtest and subsequent exercise, High GI mealtest and subsequent exercise

Group Type EXPERIMENTAL

Low GI mealtest

Intervention Type OTHER

Meal with low glycaemic index (GI) is consumed over 20 min

Low GI mealtest and subsequent exercise

Intervention Type OTHER

Meal with low glycaemic index (GI) is consumed over 20 min and the subject postprandially exercises for 30 min

High GI mealtest

Intervention Type OTHER

Meal with high glycaemic index (GI) is consumed over 20 min

High GI mealtest and subsequent exercise

Intervention Type OTHER

Meal with high glycaemic index (GI) is consumed over 20 min and the subject postprandially exercises for 30 min

Interventions

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Low GI mealtest

Meal with low glycaemic index (GI) is consumed over 20 min

Intervention Type OTHER

Low GI mealtest and subsequent exercise

Meal with low glycaemic index (GI) is consumed over 20 min and the subject postprandially exercises for 30 min

Intervention Type OTHER

High GI mealtest

Meal with high glycaemic index (GI) is consumed over 20 min

Intervention Type OTHER

High GI mealtest and subsequent exercise

Meal with high glycaemic index (GI) is consumed over 20 min and the subject postprandially exercises for 30 min

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Undergone Roux-en-Y gastric bypass (RYGB) without complications at least 12 months prior to inclusion.
* Achieved \> 50% Excess BMI Loss
* Weight stability (no fluctuations over ± 5 kg the last 3 months)
* HBA1c \< 48 mmol/mol before and after surgery without the use of anti-diabetic medication
* The participant must be able to ingest the meals


* Matched with the RYGB patients on gender, age (± 5 years), menopausal state (pre- versus post-menopausal) and BMI (± 3 points).
* Weight stable ( ± 5 kg during 3 months)
* HBA1c \< 48 mmol/mol

Exclusion Criteria

* Low hemoglobin levels (\< 6.5 mM)
* Pregnancy (determined by human chorionic gonadotropin (hCG) test) or breastfeeding
* Dysregulated thyroid gland affection
* The use of medication which affects heart frequency (i.e. Beta-blockers)
* Complications following RYGB consisting of dysphagia or other problems associated with ingestion of normal foods (i.e. vomit, diarrhea or strong abdominal pain).

Control group:


* Prior bariatric surgery or prior surgery in the upper gastrointestinal tract.
Minimum Eligible Age

20 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Copenhagen

OTHER

Sponsor Role collaborator

Kirstine Nyvold Bojsen-Moeller

OTHER

Sponsor Role lead

Responsible Party

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Kirstine Nyvold Bojsen-Moeller

Kirstine Nyvold Bojsen-Moeller

Responsibility Role SPONSOR_INVESTIGATOR

Principal Investigators

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Kirstine N Bojsen-Moller, MD, PhD

Role: PRINCIPAL_INVESTIGATOR

Department of Endocrinology, Hvidovre Hospital

Locations

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Department of Endocrinology, Hvidovre Hospital

Hvidovre, , Denmark

Site Status

Countries

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Denmark

Other Identifiers

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ExRYGB

Identifier Type: -

Identifier Source: org_study_id

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