NCT03486210

Brief Summary

More than 50,000 patients in France benefit from bariatric surgery every year. However, nutritional complications (protein malnutrition, hypoglycaemia) are common and primary or secondary weight failures (weight recovery) account for almost 20% of operated. Weight loss and the metabolic effects of surgery are not related only to a reduction in dietary intakes, but also to mechanisms independent of caloric reduction, such as eating behaviour after bariatric surgery (Gastric Bypass or sleeve gastrectomy). These choices are guided by perceived changes in the properties of the food, resulting in changes in tastes, palatability and more generally food preferences. Among available tools to evaluate dietary preferences we selected the Food Leeds Preference Questionnaire (FLPQ) to assess those modifications. During this test, photographs of food products classified according to predetermined characteristics are presented with different instructions and response design to estimate liking, wanted for food, implicitly or explicitly. Our main hypothesis is that the use of the Food Leeds Preference Questionnaire will highlight differences in dietary preferences according to the type of bariatric surgery performed. We will be conducted a study observational study on three parallel groups: a control group composed of patients suffering from unoperated obesity, a group of patients operated for a sleeve gastrectomy and a group of patients operated for a gastric bypass. We will include 45 patients per group. The patients will have to pass the Leeds Food Preference Questionnaire (LFPQ). Our judgment criterion will be the degree of food preference assessed using the LFPQ. Participants will also be assessed on behavioural parameters with the Binge Eating Scale, the Yale Food Addiction Scale Version 2.0 and the Urgency, lack of Premeditation, lack of Perseverance and Sensation seeking Impulsive behavior scale (UPPS-P) short version.

Trial Health

87
On Track

Trial Health Score

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

Enrollment
96

participants targeted

Target at P50-P75 for all trials

Timeline
Completed

Started Jun 2018

Geographic Reach
1 country

1 active site

Status
completed

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

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

March 27, 2018

Completed
7 days until next milestone

First Posted

Study publicly available on registry

April 3, 2018

Completed
2 months until next milestone

Study Start

First participant enrolled

June 4, 2018

Completed
1.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

July 10, 2019

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

July 10, 2019

Completed
Last Updated

June 18, 2021

Status Verified

June 1, 2021

Enrollment Period

1.1 years

First QC Date

March 27, 2018

Last Update Submit

June 17, 2021

Conditions

Outcome Measures

Primary Outcomes (1)

  • Degree of food preference

    The degree of food preference will be measured using the Leeds Food Preference Questionnaire, that the investigator will have previously adapted in French for French population, in the form of counting frequency scores for each category of images.

    Day 1

Study Arms (5)

Phase 1 Group 1

Healthy volunteers

Behavioral: Food preference

Phase 1 Group 2

Health professionals

Behavioral: Food preference

Phase 2 Group 1

Control group : patients obese without surgery

Other: Psychological assesment

Phase 2 Group 2

Patients who have underwent a sleeve gastrectomy

Other: Psychological assesment

Phase 2 Group 3

Patients who have underwent a gastric bypass

Other: Psychological assesment

Interventions

Food preferenceBEHAVIORAL

The study will take place in two phases. A first phase will consist in the validation of translations and the selection of images on 20 healthy volunteers and 20 health professionals specialized in nutrition. They will have to fill a form with images of food and evaluate to what extend they think the pictures represent what we can eat in France. This step will adapt the questionnaire to our country.

Phase 1 Group 1Phase 1 Group 2

Phase performed with patients fasting for at least 2 hours before the different tests. The FLPQ will be compared between a group of patients suffering from unoperated obesity (OCt), a group of patients operated on a sleeve gastrectomy (OSl) and a group operated by a bypass (OBy) between 6 and 24 months post-surgery, randomized for the 6 combined tests (2 categories). The award can be made in 2 sessions of at least 3 of the 6 tests combined. Each test combines 2 of the 11 categories. The test will consist of 96 pairs of 16 food images presented on a computer screen in color. Participants will be invited to "choose the food they most want to eat", by pressing the corresponding computer button (choices saved by counting the frequency scores in E-prime). The level of hunger will be evaluated by an Analogical Visual Scale, ranging from 0 to 10. Patients should also complete 3 self-questionnaires used routinely (Binge Eating Scale, The Yale Food Addiction Scale, The UPPS-P short version).

Phase 2 Group 1Phase 2 Group 2Phase 2 Group 3

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

This study will focus on a population of patients who are or have been obese and are being cared for at the Lyon Sud Hospital Center. Patients will either be undergoing initial assessment or being assessed for follow-up after bariatric surgery (after sleeve gastrectomy or gastric bypass).

You may qualify if:

  • Patient, male or female, between 18 to 65 years old
  • Patient with a BMI between 18.5 and 60 kg / m2: minimum 35 kg / m2 for the obesity group
  • Patient undergoing initial assessment before bariatric surgery for the obesity group
  • Patient being assessed for follow-up after bariatric surgery (after sleeve gastrectomy or gastric bypass)
  • Patient agreeing to participate in the study.
  • Patient affiliated to a Social Security scheme or beneficiary of such a scheme

You may not qualify if:

  • Patient with other psychiatric comorbidities, including a bipolar mood disorder or eating disorder
  • Patient with food eviction, whether medical or cultural
  • Patient with ongoing psychotropic treatment (except anxiolytic treatment)
  • Patient unable to give his agreement, not mastering the French language,
  • Patient under authorship or curators

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Hôpital Lyon Sud

Pierre-Bénite, France

Location

Study Officials

  • Sylvain ICETA, MD

    Hospices Civils de Lyon

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
observational
Observational Model
CASE CONTROL
Time Perspective
CROSS SECTIONAL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

March 27, 2018

First Posted

April 3, 2018

Study Start

June 4, 2018

Primary Completion

July 10, 2019

Study Completion

July 10, 2019

Last Updated

June 18, 2021

Record last verified: 2021-06

Locations