Fig. 5

Overview of the study protocol characteristics. a Number of patients grouped by pathology for each type of training environment. b Number of studies that used supportive devices grouped by pathology. c Percentage distribution of number of sessions (left), sessions per week (middle) and number of patients (right) across the selected studies. d Percentage distribution of the outcomes measures grouped by categories following the classification done by Contreras-Vidal et al. [30]. \(^{1}\)82 studies considered, \(^{2}\)52 studies considered, \(^{3}\)87 studies considered (only patients from the exoskeleton intervention)