The Effect of Different Diets on Arterial Stiffness in Obese Patients on Semaglutide

NCT ID: NCT04990024

Last Updated: 2024-08-06

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

60 participants

Study Classification

INTERVENTIONAL

Study Start Date

2021-07-01

Study Completion Date

2025-09-15

Brief Summary

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In patients initiating Semaglutide for weight management, the objective is to compare the effect of the Mediterranean diet and the high protein/low carbohydrate (HP/LC) diet CV parameters, namely arterial stiffness, measured by carotid-femoral pulse wave velocity (cfPWV), and visceral adipose tissue, in addition to other metabolic indicators.

Detailed Description

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This is a 6-month open label pilot RCT that will be conducted on Lebanese subjects with obesity, upon the initiation of Semaglutide for medical weight management, as recommended by their physician. Patients will be randomized to 2 treatment arms: Med diet and HP/LC diet. Med diet will be hypocaloric, allowing the same energy restriction, of 500 Kcal/d, while the HP/LC diet will be ad libitum. Participants will be recruited from the Endocrine clinics at AUB-MC, and from satellite clinic next in Beirut. Brochures and posters of the trial will be available in the clinic waiting areas. Patients of both participating and non-participating physicians will be recruited in the study.

Conditions

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Obesity Weight Loss

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

A computer-generated allocation sequence will be used, with a permuted block randomization (1:1). The biostatistician (MB) will generate the randomization sequence and will share it with a trial coordinator (MR) who is independent of the study team. Upon the recruitment of every participant, the study RA will contact the independent trial coordinator to receive the randomization code, in an opaque and sealed envelope.

Randomization will take place at 1-30 days after starting Semaglutide. Treatment allocation will be in batches at the end of each month.
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

The design is open label as it is impossible to blind the participants and the research team for the study intervention. Each of the dietary interventions will be delivered in the format of intensive individual sessions about the diet, food selection and food recipes. Outcome assessors will be blind to the intervention

Study Groups

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Mediterranean Diet

30 participants will be randomized to this arm. The intervention consists of 8 visits, over a period of 24 weeks, including 6 individual educational sessions on Mediterranean diet in patients on Semaglutide and 2 reinforcement educational sessions towards the end of the trial. Dietary assessments and adherence questionnaires will be conducted on several visits to assess adherence.

Group Type EXPERIMENTAL

Dietary Intervention Med Diet

Intervention Type OTHER

The diet will consist of a calorie-restricted Med diet, with 500 Kcal/d energy restriction. The intervention consists of individual and reinforcement sessions on Med diet. During these sessions, the RA will go over the benefits of Med diet, what composition it should have, and how to make appropriate choices for meal planning, in addition to providing food lists, by season. The individual sessions with subjects will also allow to individualize the diet plan.

High Protein/Low Carbohydrate Diet

30 participants will be randomized to this arm. The intervention consists of 8 visits, over a period of 24 weeks, including 6 individual educational sessions on High Protein/Low Carbohydrate diet in patients on Semaglutide and 2 reinforcement educational sessions towards the end of the trial. Dietary assessments and adherence questionnaires will be conducted on several visits to assess adherence.

Group Type EXPERIMENTAL

Dietary Intervention HP/LC Diet

Intervention Type OTHER

This is a non-ketogenic diet consisting of ad libitum intake of proteins, fat, and vegetables, with restriction of daily carbohydrates to \<130 g/d. The intervention consists of individual and reinforcement educational sessions on HP/LC, same as with Med diet (above). The individual sessions with subjects will also allow to individualize the diet plan.

Interventions

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Dietary Intervention Med Diet

The diet will consist of a calorie-restricted Med diet, with 500 Kcal/d energy restriction. The intervention consists of individual and reinforcement sessions on Med diet. During these sessions, the RA will go over the benefits of Med diet, what composition it should have, and how to make appropriate choices for meal planning, in addition to providing food lists, by season. The individual sessions with subjects will also allow to individualize the diet plan.

Intervention Type OTHER

Dietary Intervention HP/LC Diet

This is a non-ketogenic diet consisting of ad libitum intake of proteins, fat, and vegetables, with restriction of daily carbohydrates to \<130 g/d. The intervention consists of individual and reinforcement educational sessions on HP/LC, same as with Med diet (above). The individual sessions with subjects will also allow to individualize the diet plan.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Men and premenopausal women, 18-49 years, with obesity defined as BMI ≥ 30 kg/m2
* Upon the initiation of Semaglutide (within the first 1-4 weeks) for medical weight management, for clinical purposes, as advised by the primary physician
* Able to commit for a 6-month trial visits

Exclusion Criteria

* Pregnant women
* Patients who are taking or have taken other weight reducing drug therapies in the previous 6 months
* Patients who have undergone metabolic weight loss surgery
* Patients known to have diabetes (HbA1c ≥6.5% at screening)
* Patients with uncontrolled hypertension
* Patients with uncontrolled cardiac disease, pulmonary, renal or liver diseases, active cancer or psychiatric diseases
* Patients with excessive alcohol intake, defined as ≥ 2 glasses per day
* Patients known to have uncontrolled/ untreated thyroid disorders.
* Patients with cushing disease or polycystic ovaries, and those with neuro-endocrine or drug induced obesity (such as anti-psychotic, steroids, hormonal therapy): Such patients are resistant to weight loss, and they need treatment of their primary disease and/or cessation of the culprit medication to lose weight
* Patients with untreated gout
* Patients who have undergone bariatric surgery
Minimum Eligible Age

18 Years

Maximum Eligible Age

49 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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American University of Beirut Medical Center

OTHER

Sponsor Role lead

Responsible Party

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Marlene Chakhtoura

Assistant Professor of Medicine

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Marlene Chakhtoura, MD, MSc

Role: PRINCIPAL_INVESTIGATOR

American University of Beirut Medical Center

Locations

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American University of Beirut - Medical Center

Beirut, Riad El Solh, Lebanon

Site Status RECRUITING

Countries

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Lebanon

Central Contacts

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Marlene Chakhtoura, MD, MSc

Role: CONTACT

+9611350000 ext. 7411

Rachelle El Haber, BSc

Role: CONTACT

+9611350000 ext. 8314

Facility Contacts

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AUBMC

Role: primary

+961350000

Other Identifiers

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BIO-2020-0136

Identifier Type: -

Identifier Source: org_study_id

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