The Six Spot Step Test (SSST)

A, Test field for the SSST; refer to text for description. B, Relationship among the SSST (solid line), the Timed 25-Foot Walk (T25FW; broken line), and the Expanded Disability Status Scale (EDSS). The dotted trend line is for the SSST, and the solid trend line is for the T25FW. Reproduced with permission from Nieuwenhuis et al.52