Oxygen Consumption in Post-stroke Patients During Various Walking Activities Compared to Healthy Controls

Stroke is defined as an interruption of blood circulation in the brain. The treatments are in first time medical in emergency. Then, the patient will start his rehabilitation with several contributors. At this time, it will recommend physical activity to patients. Regardless of the all benefits of physical activity, it will help patient to avoid a second stroke. The investigators have the recommendations of the high authority of health in physical activity for stroke population. It recommends to practice around 20 to 60 minutes daily of physical activity with moderate effort intensity. Oxygen consumption is a parameter of effort intensity of physical activity measured in ml O2/kg/min. Currently, the investigators have the compendium of physical activity (PA). it allows us to classify PA according to effort intensity. And so, an activity with a moderate effort intensity is an activity between 3 and 5.9 metabolic equivalent task (MET). Note that 1 MET is 3.5 ml/O2/Kg. Nevertheless, this compendium does not correspond to post-stroke individuals. As consequences, Low intensity exercise as described in guidelines might be at a moderate intensity level for stroke survivors. Hence, the investigators want to assess the oxygen consumption of post-stroke individuals during various walking tasks and compare it to healthy controls.

Inclusion criteria

Common to both groups:

• Age >=18 years
• Able to give consent
• Not under guardianship or curatorship
• Enrolled in the French social security system

Specific to the cerebrovascular accident Group:

• Stroke confirmed by brain imaging
• Able to walk stairs without human assistance (modified Functional Ambulation Classification >= 6)

Healthy Group Specific:

• Individuals matched to stroke individuals on age sex and BMI.

Exclusion criteria

Cerebrovascular accident group - Severe cognitive impairment (MoCA < 18)

Common to both groups:

• Presence of contraindication to physical activity: unstable diabetes, unstable hypertension, unstable angina, intra-cardiac thrombus.