With the aim of achieving downstaging, downsizing, and reducing the risk of recurrence, neoadjuvant chemotherapy, possibly chemoradiotherapy - i.e. neoadjuvant therapy is indicated in the preoperative period for patients with cancer of the upper digestive tract and rectal cancer.~Chemotherapy has a negative impact not only on the overall physical and mental condition of the patient but also on the quality of life and on the daily activities of the individual, especially in the period when the organism is facing an abnormal stress load in the sense of extensive surgical procedures.~Recently, attention and efforts to improve postoperative morbidity and mortality have increasingly focused on the preoperative period. The concept of prehabilitation, which is defined as an intervention improving functional capacity before an upcoming physiological stressor, appears as a way to contribute to this. This fact is evidenced by a number of published references.~The main aim of the study is to confirm or refute the feasibility of the prehabilitation program during neoadjuvant therapy in two diagnostic groups of patients:~- Patients with cancer of the upper digestive tract~- Patients with rectal cancer~The prehabilitation program will be implemented in the patient's home environment.~The study aims to answer the basic research question of whether selected patients will be able to complete a home exercise regimen during the preoperative period when they will undergo neoadjuvant therapy.~As part of the study, the program's security and feasibility will be tested.
The pilot research project is focused on the feasibility of a prehabilitation program for two groups of diagnoses (esophageal and stomach cancer, rectal cancer).