Test-retest agreement and reliability of the Six Spot Step Test in persons with multiple sclerosis.

Background: The Six Spot Step Test (SSST) extends traditional walking outcomes in persons with multiple sclerosis (PwMS) by further challenging components of coordination and balance. Nonetheless, the test-retest agreement of the SSST has not been investigated.

Objective: To determine the within-day, day-to-day, and inter-rater agreement and reliability of the SSST in PwMS.