Study of Improving Gait Parameters When Using a Cane in "Light Touch" Condition in Elderly People With and Without Walking Difficulties

Inclusion Criteria: * presence of gait disturbance or balance disorders defined by a geriatric assessment and / or a walking speed test Exclusion Criteria: * presence of acute problems or central or peripheral neurological severe sequelae * occurrence of a recent fracture of the lower limbs or spinal fracture * cognitive disorders * presence of comorbidities: blindness, heart or severe respiratory failure, disabling osteoarthritis of the hands or legs, severe malnutrition, muscle atrophy, untreated orthostatic hypotension * patients using a cane to a mechanical support