“…In four studies, 15 , 19 , 40 , 49 exercise training started during the second postoperative year and inclusion spread over several months. Aerobic training was performed in six (27%) studies, 17 , 19 , 26 , 36 , 40 , 47 resistance training in three (14%) studies, 20 , 45 , 48 a combination of aerobic and resistance training in 12 (54%) studies, 15 , 16 , 17 , 18 , 27 , 37 , 41 , 42 , 43 , 44 , 49 , 50 and balance training in one (5%) study. 46 In two preoperative programs, aerobic training incorporated periods of HIIT.…”