Fitness, Physical Activity and Movement Analysis in Obese Patients Undergoing Bariatric Surgery

This study is a monocentric longitudinal study conducting in obese patients: candidates to sleeve gastrectomy and these same patients 6 months after.The primary aim of this study is to describe the effects of sleeve gastrectomy on habitual physical activity, physical fitness (cardiorespiratory and muscular fitness) and gait parameters in severely obese patients. Functional capacity will be assessed during a 6-min walk test, habitual physical activity with accelerometers during 7-day recordings in habitual life conditions (Actigraph GT3X® and activPAL®), cardiorespiratory fitness during a maximal exercise test on a cycle ergometer with a direct measure of peakVO2, muscle strength with an isokinetic dynamometer (Contrex®), muscle power and postural stability with force platforms (Kistler® and Satel®) and gait parameters with a gait analysis system (GaitRite®). Fatigue, quality of life and joint pain will be assessed with questionnaires (MFI-20, SF36 and WOMAC, respectively).

Inclusion criteria

• Female gender
• Age between 18 and 65 years
• Planned obesity treatment by sleeve gastrectomy
• Patient with massive obesity (BMI ≥ 40 kg/m2) or severe obesity (BMI between 35 and 40 kg/m2) with comorbidities
• Written informed consent

Exclusion criteria

• Subject not affiliated with a social security scheme
• Regular follow-up not feasible
• Participation in a structured physical activity program
• Severe orthopedic problems
• Disabling neuropathy
• Recent (< 6 months) coronary event
• Abnormal cardiac stress test
• Pregnancy