Impact of Muscular Fatigability on Spastic Co-contractions After Stroke Patients

Impact of Muscular Fatigability on Spastic Co-contractions Between the Quadriceps and Hamstrings in Stroke Patients

This study evaluates the effects of an isokinetic fatigue protocol of the quadriceps on the amount of co-contractions of this last with the hamstrings during a maximal isometric flexion movement in hemiparetic stroke patients.

The effect of such a protocol on gait parameters and spasticity of the quadriceps will be evaluated also.

Inclusion Criteria:

• Age between 18 and 80y
• Hemiparesis after a first-ever stroke > 3 months
• Spasticity of the quadriceps muscle
• Quadriceps strength at least at 3/5 (MRC testing)
• Subject able to walk at least 2min without rest
• Informed consent
• Social security affiliation

Exclusion Criteria:

• Severe comprehension troubles (language, cognitive or psychiatric disorders)
• History of previous stroke, locomotor or other neurological disorders
• Locomotor troubles affecting the paretic arm
• Contraindication to efforts : cardiac insufficiency, severe aortic valvular stenosis, recent heart failure, non treated high blood pressure, severe peripheral arterial disease
• Pregnancy or breastfeeding
• Adult subject to guardianship