Static and dynamic balance in people with multiple sclerosis (pwMS) appear scarcely correlated, although both worsen as disability increases, a recent study found. 106 pwMS (Expanded Disability Status Scale, EDSS 0 − 6.5) stratified in 3 sub-groups (Class 1 EDSS 0–1.5, Class 2 EDSS 2–4, and Class 3 EDSS 4.5–6.5) and 42 healthy controls (HC) participated in the study. All underwent static posturography and instrumented Timed-Up-and-Go (TUG) performed using a wearable inertial sensor. Raw data were processed to extract postural sway features, overall duration of TUG, and its main sub-phases. Researchers found:

• All sway parameters of pwMS of Classes 2 and 3, as well as total TUG duration and time necessary to perform 180° turns, were found significantly higher than HC and Class 1 participants.
• However, poor correlations were found between sway and TUG parameters.
• When pwMS are grouped, small/moderate correlations (in the range 0.20 – 0.41) were found between all sway parameters and total TUG duration.