This study evaluates the effect of the need to void on parkinsonian gait

Parkinsonian syndromes are common causes of gait disorders, associated with hypometria, bradykinesia or rigidity. If motor disorders are the most visible part, lower urinary tract dysfunction is one of the most prevalent dysautonomic disorder (27-80%), especially over active bladder syndrome (OAB). If it seems evident that gait and urinary disorders are linked, because of similar anatomic pathways and control processes, no studies have investigated their association in extrapyramidal patients.

The aim of this study is to assess the effect of the need to void on the walking speed in this particular population.

This prospective study inclues all parkinsonian syndromes who had a follow-up for OAB. They must have a security delay over five minutes, no severe cognitive, motor or psychiatric disorders. We invite them to drink until a need to void (or equivalent). Bladder filling is measured by bladder scan, then they performe gait tests in a specific place, with calm and no passage : Patient can use their habitual walking device. Speed walk asking is comfortable for the two test. Three ten-meter tests, one double-task ten-meter test, one timed-up-and-go test, one timed raise of the floor (GMT). We repeat the same tests after voiding or self-catheterization. Toilets are just next to the hall where they realize the tests. A clinical examination assesses urinary dysfunction (USP, IPSS), motor score (UPDRS-III, Hoehn and Yahr scale, daily equivalent of levodopa), history of falls and comorbidities.

Inclusion Criteria:

• Parkinsonian syndromes
• Follow in neurourology for Lower urinary tract symptoms
• Able to walk 50 meters without human assistance
• able to hold voiding for more than 3 minutes

Exclusion Criteria:

• Actual urinary tract infection
• Montreal cognitive assessment < 20/30
• Acute psychiatric or neurologic disorders who can interfer with walking tests

Patients consulting in a tertiary center in neuro-urology