The prevalence of obesity is growing in elderly with heavy consequences in term of medical complications and mortality, so that this is nowadays an important public health issue. The major therapeutic solution is dietary restrictions, but and the advantages and the metabolic consequences are not well known in elderly. The MONA study main aim is to assess the metabolic changes in this population, after dietary restrictions, compared to young people.
Primary endpoint : Study the metabolic adaptations of the subcutaneous adipose tissue after a diet in elderly obese men compared to young obese men. Secondary endpoints : Study the metabolic adaptations of skeletal muscle, the genetic adaptations of subcutaneous adipose tissue and skeletal muscle, the inflammatory and fibrosis modifications of subcutaneous adipose tissue, the insulinosensibility modifications, the modifications on the physical composition, modifications of the energy expenditure in resting state and the oxidation of the substrata, study the lipoproteins metabolism and identify new biomarkers. All those endpoints are studied comparing elderly obese subjects versus young obese subjects.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
NONE
Enrollment
71
Dietary restrictions during 8 weeks
University Hospital Toulouse
Toulouse, France
Lipolysis at resting and during physical activity test
Determine lipolysis at resting and during physical activity test by microdialysis, before dietary restrictions and after dietary restrictions (20% dietary restrictions)
Time frame: Change after 8 weeks dietary restrictions
Metabolic parameters in skeletal muscle
To assess metabolic parameters before dietary restrictions and after dietary restrictions (20 % dietary restrictions)
Time frame: Change after 8 weeks dietary restrictions
Genetic markers
To assess genetic markers in adipose tissue and skeletal tissue before dietary restrictions and after dietary restrictions
Time frame: Change after 8 weeks dietary restrictions
Fibrosis and inflammatory markers in adipose tissue
To assess markers in adipose tissue before dietary restrictions and after dietary restrictions (20 % dietary restrictions)
Time frame: Change after 8 weeks dietary restrictions
insulinosensibility
To determine insulinosensibility before dietary restrictions and after dietary restrictions (20 % dietary restrictions)
Time frame: Change after 8 weeks dietary restrictions
Fat and muscles rates in the whole body
To determine fat and muscles rates by Dexa before dietary restrictions and after dietary restrictions
Time frame: Change after 8 weeks dietary restrictions
Energetic consumption
energetic consumption at resting and during physical activity, before dietary restrictions and after dietary restrictions
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Time frame: Change after 8 weeks dietary restrictions
Lipoproteins metabolism
Before dietary restrictions and after dietary restrictions
Time frame: Change after 8 weeks dietary restrictions
biomarkers identification
New urinary and intestinal biomarkers identification, before dietary restrictions and after dietary restrictions
Time frame: Change after 8 weeks dietary restrictions