Participants in this experimental arm, consisting of pediatric patients with neuromotor impairments, will undergo a single 1-hour technology-assisted rehabilitation session using either the Lokomat or GRAIL system. During the session, the physiotherapist will use a display showing real-time outputs from the AI-based model, including the patient's heart rate, engagement levels, pleasantness, activation, and motor performance. The model acts as an observational support tool and will not directly alter the standard rehabilitation protocol. At the end of the session, the physiotherapist will evaluate the usability of the system.

The intervention consists of the deployment of a real-time AI-based monitoring system during a standard technology-assisted rehabilitation session. The physiotherapist is provided with a display showing continuous feedback on the patient's engagement levels, emotional state (pleasantness and activation), motor performance, and heart rate. The model processes physiological and inertial data collected via wearable sensors, acting purely as an observational support tool without altering the standard rehabilitation protocol.

This validated questionnaire is intended to evaluate the usability and feasibility of a system or product. It is composed of 10 items assessing factors such as system complexity, ease of use, and functionality integration. Each item is proposed on a 5-points Likert scale, with minimum value 1 and maximum value 5. Higher overall values stand for a higher degree of agreement with respect to the statement provided by the single item. For odd items, higher values stand for higher usability. For even items, higher values stand for lower usability.

This measure is intended to capture the therapist's observation of patient engagement. PRIME-SP is a validated self-reported questionnaire that is composed of three main parts: Part A, where the therapist can perform an overall evaluation of patient engagement according to a 5-point Likert scale (from 0 to 4, with higher values corresponding to positive engagement); Part B, where the therapist can perform a domain-dependent (affective, cognitive, behavioral domains) evaluation of patient engagement according to a 5-point Likert scale (from 0 to 4, with higher values corresponding to positive engagement); Part C, where the therapist can take free notes about factors and circumstances that he/she believes may have affected patient engagement in the session.