Acceptability of wearable inertial sensors, completeness of data, and day-to-day variability of everyday life motor activities in children and adolescents with neuromotor impairments.

Fourteen percent of measurement days were missing or invalid because of reasons affecting all sensors at once, and combined missing values ranged between 11% and 36%. Sample sizes were smaller than desired in the wheelchair group and in children who used walking aids, so the needed number of measurement days in those groups may be overestimated. The group had different diagnoses and levels of motor impairment, so findings may depend on age or diagnosis. Day-to-day variability includes both real changes in activity and measurement error from the sensors and algorithm, and the study could not separate them. Participants without any valid measurement day were excluded, so the analysed numbers were smaller than the recruited numbers.

Do not conclude that wearable sensors improve motor performance or rehabilitation outcomes. This study tested whether children would wear them, how complete the data were, and how many days were needed for stable daily activity estimates. It did not compare a treatment group with a control group.