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Hospital‐based supervised aerobic training effectively improves ventilation efficiency and cardiac output power in patients with systolic heart failure

This study investigated the effects of hospital‐based supervised aerobic training on ventilation efficiency and cardiac output power in patients with systolic heart failure (SHF). Thirty‐three patients with SHF who completed hospital‐based supervised aerobic training for 36 sessions were retrospectively collected. The former 18 sessions and the latter 18 sessions were performed at moderate continuous training (constant 60%VO2peak) and aerobic interval ntraining (3‐minute intervals at 40% and 80%VO2peak) for 45 minutes, respectively. Thirty‐three SHF patients who only received community‐based exercise program education were gathered as control group. The results showed that hospital‐based supervised aerobic training 1) increased work‐rate and VO2 at ventilation threshold and peak exercise, 2) reduced the value of VE/VO2 during submaximal exercise, 3) enhanced cardiac output power at peak exercise, and 4) lowered the score of Minnesota Living with Heart Failure Questionnaire (MLHFQ). Despite modestly lowered MLHFQ score, no significant changes in ventilatory/hemodynamic responses to exercise were observed in control group. Hence, we conclude that hospital‐based supervised aerobic training in patients with SHF effectively improves ventilation efficiency and cardiac output power at submaximal and peak workloads, respectively.