Limitations
deaths, CKD, chronic kidney disease
This study has many limitations. Due to the COVID-19 pandemic, it was conducted in one dialysis center and a small number of participants was recruited.The results obtained were also affected by the deteriorating health of CKD patients, renal replacement therapy and the presence of various comorbidities. In the study of patients with chronic kidney disease treated by hemodialysis, it was difficult to find persons willing to participate in this project to assess their physical activity. It was also necessary to properly select physical activity in a way that would allow the examined persons to perform the recommended intervention. The size of the study group during the research project was reduced for independent reasons, such as kidney transplants and deaths among project participants. In the conducted study, the psychological aspect of the introduction of virtual reality could have made hemodialysis patients more willing to perform physical activity. This could have been an independent factor affecting the course of the study. In the continuation of the research, it is necessary to increase the size of the study group, which would allow for a more accurate analysis of these relationships.