Reproducibility assessment of a quantitative measure of the amount of trunk compensation by kinematic analysis in a grasping task in stroke patients.This "maladaptive trunk compensation" is suspected to be underlined by "arm non-use" in some patients, since this abnormal movement impairs the ability of patients to correctly flex their shoulder and extend their elbow during grasping.

Inclusion Criteria:

• · Patient hemiparetic

  • Hemiplegic Patient
  • Patient can perform a global task with the gripping limb

Exclusion Criteria:

• Patient can not actively tender elbow of the affected limb,

  • Patient who can not actively flex the shoulder of the affected limb,
  • Patient with a passive extension deficit elbow> 30 °,
  • Patient with a shoulder flexion passive deficit> 60 °,
  • Patient with severe neglect
  • Patient bearer severe cognitive impairment
  • A patient with aphasia understanding disorders