BFR in Overweight Sedentary Subjects

Study Overview
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Brief Summary
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This project should allow the investigators to observe the effects of low load training under partial vascular occlusion (BFR) in comparison with resistance training at low load without partial vascular occlusion in sedentary people overweight on parameters : decrease in fat mass; increase in muscle mass 79; muscle strength; decrease in the energy cost of walking; increase in preferred walking speed; improvement in walking pattern in patients overweight. Training under partial vascular occlusion should facilitate physical activity in overweight people as it can be just as effective as a classic type training with heavy loads. Thus, this device could allow people for who wear heavy loads can present an obstacle to physical activity to feel more involved in the physical activity programs offered in medical or sports centers.

Detailed Description
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The main objective of this study is to observe the effects of low load training under vascular occlusion (BFR) compared with low load resistance training without vascular occlusion in overweight sedentary people on parameters such as: decrease in fat mass; lower blood sugar levels as well as lower blood triglycerides and cholesterol levels; increased muscle mass; muscle strength; the reduction of the energy cost of walking; increasing the preferred walking speed; improving the walking pattern in overweight patients. 3.2 Primary and secondary endpoints The first hypothesis is that the BFR drive will be effective in improving walking economy (thus reducing the energy cost of walking) and increasing the preferred walking speed, by improving walking patterns. The second hypothesis is that BFR training makes it possible to modify the body composition in a slight way and to promote the gain of muscle strength in overweight individuals who do not practice physical activity beforehand. In addition, blood tests will show a decrease in blood sugar, blood triglyceride levels and cholesterol. 3.3 Study design This single-center project aims to test the effects of low-load training under partial vascular occlusion (BFR) compared to low-load resistance training without vascular occlusion in overweight sedentary people. The main expected effects are a decrease in fat mass, an increase in muscle mass and strength, a decrease in the energy cost of walking as well as an increase in preferential walking speed. This project is part of a continuity of research in a public health context in order to propose adapted and effective physical activity programs for an overweight population unable to train with heavy loads.

Official Title
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Effects of a Physical Activity Program With Partial Vascular Occlusion on Body Composition, Biomechanics and Walking Energy in Overweight Sedentary Subjects

Conditions
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Overweight

Intervention / Treatment
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* Other: Exercise Intervention


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: IMC between 25 and 35 vaccin against Covid-19 Exclusion Criteria: hypertension diabete

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: The procedure will consist of 6 weeks of training with or without partial vascular occlusion (depending on group A or group B) at the rate of 3 sessions per week (for a total of 18 training sessions).
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Blood Flow Restriction<br>Use of the BFR cuff during the training intervention | Other: Exercise Intervention<br>* Training with light load with blood flow restriction (BFR)<br>|
| Active Comparator: control<br>No use of inflated cuff | Other: Exercise Intervention<br>* Training with light load with blood flow restriction (BFR)<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| DEXA technology | Body composition assessment: relative lean and fat mass in all body segments | One week before intervention | 
| DEXA technology | Body composition assessment: relative lean and fat mass in all body segments | One week following the training intervention | 
| Evaluation of muscle strength from an isokinetic device | eccentric and concentric peak torque of the knee extensor muscles | One week before intervention | 
| Evaluation of muscle strength from an isokinetic device | eccentric and concentric peak torque of the knee extensor muscles | One week following the training intervention | 
| Evaluation of the preferential speed of walking in an ecological situation | using of a treadmill with measurement of the ground reaction forces | One week before interventionn | 
| Evaluation of the preferential speed of walking in an ecological situation | using of a treadmill with measurement of the ground reaction forces | One week following the training intervention | 
| Analysis of the biomechanics of walking on a treadmill instrumented with power platforms. | calculation of the mechanical work | One week before intervention | 
| Analysis of the biomechanics of walking on a treadmill instrumented with power platforms. | calculation of the mechanical work | One week following the training intervention | 
| Evaluation of the energy cost of walking | on a treadmill, by indirect calorimetry with gaz exchanges | One week before intervention | 
| Evaluation of the energy cost of walking | on a treadmill, by indirect calorimetry with gaz exchanges | One week following the training intervention | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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blood flow restriction