- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01411605
Influence of Cardio-ventilatory Factors on Exercise Intolerance in Obese Adolescents: Effects of Exercise Training (VENTILOBE)
Worldwide, childhood and adolescent obesity has reached epidemic proportions despite major efforts to promote weight reduction. Pediatric obesity commonly presages adult obesity and is associated with the development of weight-related comorbid conditions and increased morbidity.
Regular physical activity is an important modality of obesity management. Despite controversies, poor exercise tolerance has frequently been reported in youth obesity and the cause of this limited exercise tolerance remains unknown. Several factors accompanying obesity may interfere with exercise tolerance in obese populations. Respiratory factors, such as decreased thoracic compliance, increased airway resistance and breathing at low pulmonary volumes are associated with obesity and may impact exercise intolerance in this population. Moreover, even in people with otherwise normal lungs, the normal ventilatory responses to exercise can become constrained in obesity. A thorough understanding of the mechanisms underlying this exercise intolerance remains fundamental in order to favour long term adherence to exercise training. This is especially true in youth populations, in which the management of overweight and obesity must be undertaken as soon as possible, due to the early onset of cardiovascular risk factors.
The main purpose of this study is to determine early-onset cardio-respiratory mortality factors in obese adolescents as well as their relation with exercise intolerance (i.e. dyspnea) when compared with age and gender-paired normal-weight volunteers.
Study Overview
Detailed Description
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
-
Grenoble, France, 38000
- CHU Grenoble
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Male and female obese adolescents (BMI > IOTF 30, 12-16 years old)
Exclusion Criteria:
- Cardiovascular pathology
- Pathology interfering with physical activity (neurological pathology, severe respiratory illness i.e. asthma, renal failure)
- Diabetes (known or treated)
- Participation in another study
- Asthma (known and treated)
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Exercise training
12-week supervised exercise-training (ET) program consisting of two 60-min and one 120-min exercise sessions per week which focus mainly on aerobic exercises (cycling, treadmill, rower). Initial aerobic exercise intensity is set at 60 % of HR peak and will reach 80 % at the end of the ET protocol. |
12-week supervised exercise-training (ET) program consisting of two 60-min and one 120-min exercise sessions per week which focus mainly on aerobic exercises (cycling, treadmill, rower). Initial aerobic exercise intensity is set at 60 % of HR peak and will reach 80 % at the end of the ET protocol. |
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Exercise tolerance (Expiratory flow limitation and Operational Lung Volumes at rest and exercise, cardiorespiratory and subjective responses to incremental exercise)
Time Frame: Participants will be followed for the duration of exercise training, an expected average of 12 weeks
|
Participants will be followed for the duration of exercise training, an expected average of 12 weeks
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Polysomnography
Time Frame: Participants will be followed for the duration of exercise training, an expected average of 12 weeks
|
Explore the potential existence of obstructive sleep apnea and its effects on cardiovascular adaptations during exercise.
|
Participants will be followed for the duration of exercise training, an expected average of 12 weeks
|
Cardiorespiratory fitness (VO2max)
Time Frame: Participants will be followed for the duration of exercise training, an expected average of 12 weeks
|
Participants will be followed for the duration of exercise training, an expected average of 12 weeks
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Bernard WUYAM, Dr, University Hospital, Grenoble
- Principal Investigator: Claudine Perrin, MD, CHU Grenoble, Pediatrics Department
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 0718
- 2007-A00714-49 (Registry Identifier: ID RCB)
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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