Effectiveness of Pelvic Floor Exercise to Prevent LARS (Low Anterior Resection Syndrome)

The main aim of this randomized study will be to determine the effectiveness of pelvic floor exercises on the incidence or severity of LAR syndrome in patients after mini-invasive rectal resection. The main questions it aims to answer are: * Does pelvic floor exercise after low anterior resection prevent LARS (low anterior resection syndrome)? * What is the adherence of patients to prescribed home exercise after surgery? * Quality of life after LAR Researchers will compare the group of patients with pelvic floor exercises to those without and determine the occurrence and severity of LARS. Participants will: * under the professional guidance of a physiotherapist, the day before surgery and in the first 4 postoperative days be educated to exercise the pelvic floor * continue exercise at home for a month (according to the instructions together with the infographic)