Table 1.

Examples of digital mobility outcome measures selected for validation in Parkinson's disease, multiple sclerosis, chronic obstructive pulmonary disease and proximal femoral fracture recovery

Average walking speed over a rectilinear walking bout (m/s)

Metrics extracted for each walking bout

− Cadence (steps/min)

− Step/stride time (s)

− Swing/stance time (s)

− Stride length (m)

− Turn duration (s)

− Turn angle (degrees)

− Turn velocity (mean and peak) (degrees/s)

Metrics extracted from all walking bouts (at daily level)

− Volume of walking: number, length and duration of walking bouts

− Number of steps per day, walking time, walking/movement intensity