Table 4.

Evaluation metrics and moment of application

Metric	Utility	When
		During	Pre	Middle	Post
10-m walking test (10 mwt) [30]	Gait-speed measure		*	*	*
6-min walking test (6 mwt) [33]	Global responses involved during exercise. Walked distance and endurance		*	*	*
Physiological Cost Index [23]	Energy expended			*	*
3D gait analysis	Kinematics, spatial-temporal parameters, gait deviation index (GDI), gait profile score (GPS)...		*	*	*
Maximum isometric strength with hand-held dynamometer	Maximum voluntary contraction of primary lower limbs muscles		*	*	*
Selective Control Assessment of Lower Extremity (SCALE) [25]	Quantify selective voluntary motor control and its progression		*	*	*
Gross Motor Function Measure (GMFM-88) dimensions D (standing) and E (walking) [26]	Evaluate changes in gross motor function according to activities as walking, running or jumping		*		*
Kinesiophobia assessment	Psychological influence of fear and pain		*		*
Gillette Functional Assessment Questionnaire (FAQ) [34]	Independent activities, locomotor abilities and user’s satisfaction		*		*
ROM performance	Measure of ROM in lower limbs during robot walking	*
Selective force	Evolution of forces executed by the user during robot walking	*
Patient’s motivation	Estimation of user’s motivation in 0 to 10 scale	*