Feasibility and usability of a wearable sensor system for gait assessment in children with neuromuscular diseases.

The study had a very small sample size of 12 patients, which limits the generalizability of the findings. Participants were exclusively ambulatory without assistive devices and had adequate cognitive abilities, excluding those with more severe disabilities or higher functional impairment. The study was conducted in a single clinical setting; ecological validity in home or school environments was not assessed. The algorithm adjustments for stride length estimation were empirical and based on this small, non-representative sample, requiring further validation. Only one smartphone model and operating system were used, which may have influenced connection reliability.

The publication was supported by 'Ricerca Corrente' funding from the Italian Ministry of Health. No other specific conflicts of interest regarding the device manufacturer were explicitly declared in the provided text.

Do not assume the device measures speed identically to manual observation. In the 10-Meter Walk Test, the device recorded lower mean speeds (1.10 m/s) compared to the standard manual method (1.31 m/s), although the difference was not statistically significant.