“…Eight independent studies (nine records) evaluated barriers and motivators in cohorts of various organ transplant recipients, i.e., 531 kidney transplant recipients, 250 liver transplant recipients, 148 lung transplant recipients, 114 heart transplant recipients, and four multi-organ transplant recipients [8,11,72,[76][77][78]80,81,84]. Based on limited literature data, there are no differences in barriers and motivators between different solid organ transplant groups [11,76]. Various methods were used, with the majority of studies applying semi-structured interviews [11,70,71,74,79,81,83] and others using web-based questionnaires [72,73,80,84] or standardized questionnaires, such as Barriers and Motivators Questionnaire [8,69], the Exercise Benefits/Barriers Scale [82], Tampa Score of Kinesophobia [75], Inventory of Physical Activity Objectives questionnaire [76], Behavioural Regulation in Exercise Questionnaire-2 [78], Perceived Physical Activity Scale (sub-scale of the Physical Self-Efficacy Scale) [75], or Exercise Self-Efficacy Scale [8].…”