Energy Intake and Energy Deficit in Obese Adolescents (IDEFIX)

Nutritional Responses to Chronic Exercise- Versus Energy Restriction-induced Energy Deficits in Obese Adolescents

The aim of the present study is to compare the effect of two weight loss interventions inducing the same energy deficit but one based on exercise and one using dietary restriction, on appetite control in obese adolescents. Investigator hypothesis that daily energy intake and hunger will be increased in the dietary restriction group but not in response to the exercise program.

Study Overview

• Status: Unknown
• Conditions: Pediatric Obesity
• Intervention / Treatment: Behavioral: DEF-EI : Energy restriction induced energy deficit; Behavioral: DEF-EX : Exercise induced energy deficit

Detailed Description

The present study will compare the nutritional responses to two 4-month weight loss programs inducing the same energy deficit in obese adolescents, one based on exercise and the other one using dietary restriction. After a first 4-month phase stabilizing the adolescents' daily energy intake and expenditure, half of the sample with increase their physical activity to induce a 10% increase of their daily energy expenditure (maintaining the same energy intake) while the other half will stick with the same physical activity program but reduce their daily intake to match for the same 10% energy deficit. Before, at the end and 4 months after the intervention, Investigator will assess the adolescents' energy intake and appetite control by measuring: ad libitum energy intake, appetite feelings throughout the day, food preferences, food reward. But also all the potential underneath mechanisms based on gastro-peptides and adipokines. Finally, sleep metabolism will be assessed using polysomnography as a potential link between weight loss and appetite control. Body composition, quality of life, aerobic capacities and resting metabolic rate will also be measured at each time point.

• Study Type: Interventional
• Enrollment (Anticipated): 50
• Phase: Not Applicable

Contacts and Locations

Study Locations

• France
  • Clermont-Ferrand, France, 63003
    • Recruiting
    • Chu Clermont-Ferrand
    • Sub-Investigator: David THIVEL

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 12 years to 16 years (CHILD)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• BMI percentile > 97th percentile according to the french curves.
• ages 12-16 years old
• Signed consent form
• being registered in the national social security system
• no contraindication to physical activity

Exclusion Criteria:

• Previous surgical interventions that is considered as non-compatible with the study.
• Diabetes
• weight loss during the last 6 months
• cardiovascular disease or risks

Study Plan

How is the study designed?

Design Details

• Primary Purpose: TREATMENT
• Allocation: RANDOMIZED
• Interventional Model: PARALLEL
• Masking: DOUBLE

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
EXPERIMENTAL: DEF-EI; these adolescents will follow a dietary restriction of 10% of their daily energy intake.	Behavioral: DEF-EI : Energy restriction induced energy deficit; DEF-EI : Energy restriction induced energy deficit The content of their energy intake will be decreased by 10% daily compared with the phase one of the protocol (stabilization of intake). This decrease will be allowed by the internship nature of the clinical program; all the meals are prepared and served by the personal of the clinical centre.
EXPERIMENTAL: DEF-EX; these adolescents will increase their physical activity-induced energy expenditure by 10% per day.	Behavioral: DEF-EX : Exercise induced energy deficit; DEF-EX : Exercise induced energy deficit While their intake will remain the same as phase 1, they will increase their physical activity energy expenditure by 10% thanks to an increase of their prescribed exercise intensities or durations.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Changes in energy intake at lunch time	food intake will be measured ad libitum during a lunch time buffet. The adolescents will be offered an ad libitum buffet-type meal composed based on their food intake preferences. Their intake will be assessed by a member of the investigation team	Before, after 10 months and 4 month after the intervention

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
change in FM	Fat mass (FM) was assessed using DXA following standardized procedures	Before, after 10 months and 4 month after the intervention
Aerobic capacity	VO2peak will be measured during a graded exhaustive cycling test performed by a specialized medical investigator from the Department of Sports Medicine, Functional and Respiratory Rehabilitation (Clermont-Ferrand University Hospital). The initial power will be set at 30 W for three minutes and followed by 15 W increments every 1.5 minutes.	Before, after 10 months and 4 month after the intervention
Insulin concentration	: Insulin will be assessed thanks to a fasting blood sample taken by a specialized nurse.	Before, after 10 months and 4 month after the intervention
Glycaemia concentration	glycaemia, will be assessed thanks to a fasting blood sample taken by a specialized nurse.	Before, after 10 months and 4 month after the intervention
total cholesterol concentration	cholesterol total will be assessed thanks to a fasting blood sample taken by a specialized nurse.	Before, after 10 months and 4 month after the intervention.
HDL-C concentration	HDL-C will be assessed thanks to a fasting blood sample taken by a specialized nurse	Before, after 10 months and 4 month after the intervention
LDL-C concentration	LDL-C will be assessed thanks to a fasting blood sample taken by a specialized nurse.	Before, after 10 months and 4 month after the intervention
Triglycerides concentration	Triglycerides concentration will be assessed thanks to a fasting blood sample taken by a specialized nurse.	Before, after 10 months and 4 month after the intervention
Acylated Ghrelin concentration	Acylated Ghrelin concentration will be assessed thanks to a fasting blood sample taken by a specialized nurse	Before, after 10 months and 4 month after the intervention
Leptin concentration	Leptin concentration will be assessed thanks to a fasting blood sample taken by a specialized nurse	Before, after 10 months and 4 month after the intervention
Sleep metabolism	sleep duration will be assessed during an overnight polysomnography.	Before, after 10 months and 4 month after the intervention
appetite feelings	hunger satiety will be assessed using visual analogue scale at regular interval through a test day	Before, after 10 months and 4 month after the intervention
Quality of life Score	A total Quality of life score will be obtain thanks to the "SF36" questionnaire. This is a self-reported questionnaire. A member of the investigation team will be present to help and guide the adolescents if needed	Before, after 10 months and 4 month after the intervention
Health Perception	A total Health Perception score will be obtain thanks to the "Health Perception Questionnaire ". This is a self-reported questionnaire. A member of the investigation team will be present to help and guide the adolescents if needed.	Before, after 10 months and 4 month after the intervention

Collaborators and Investigators

• Sponsor: University Hospital, Clermont-Ferrand
• Collaborators: Tza Nou - Maison médicale pour enfants et adolescentes - 230, rue Vercingétorix - B.P. 77 - 63150 La Bourboule; SSR Nutrition-Obésité - 33-35 rue Maréchal Leclerc - 63000 Clermont-Ferrand; Laboratoire AME2P. Campus universitaire des cezeaux, 63170 Aubiere, Cedex

Publications and helpful links

General Publications

• Roche J, Corgosinho FC, Damaso AR, Isacco L, Miguet M, Fillon A, Guyon A, Moreira GA, Pradella-Hallinan M, Tufik S, Tulio de Mello M, Gillet V, Pereira B, Duclos M, Boirie Y, Masurier J, Franco P, Thivel D, Mougin F. Sleep-disordered breathing in adolescents with obesity: When does it start to affect cardiometabolic health? Nutr Metab Cardiovasc Dis. 2020 Apr 12;30(4):683-693. doi: 10.1016/j.numecd.2019.12.003. Epub 2019 Dec 16.

Study record dates

Study Major Dates

• Study Start (ACTUAL): January 8, 2018
• Primary Completion (ANTICIPATED): December 1, 2018
• Study Completion (ANTICIPATED): December 1, 2018

Study Registration Dates

• First Submitted: February 8, 2018
• First Submitted That Met QC Criteria: March 8, 2018
• First Posted (ACTUAL): March 15, 2018

Study Record Updates

• Last Update Posted (ACTUAL): March 15, 2018
• Last Update Submitted That Met QC Criteria: March 8, 2018
• Last Verified: March 1, 2018

More Information

Terms related to this study

• Keywords: Adolescents; obesity; Physical activity; appetite control
• Additional Relevant MeSH Terms: Overnutrition; Nutrition Disorders; Overweight; Body Weight; Obesity; Pediatric Obesity; Molecular Mechanisms of Pharmacological Action; Enzyme Inhibitors; Butyl phosphorotrithioate
• Other Study ID Numbers: CHU-378; 2017-A00817-46 (OTHER: 2017-A00817-46)

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No