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Influence of Home Based Exercise Intensity on the Aerobic Capacity and 1 Year Re-Hospitalization Rate in Patients with Chronic Heart Failure
J Kor Phys Ther 2018;30(5):181-186
Published online October 31, 2018;  https://doi.org/10.18857/jkpt.2018.30.5.181
© 2018 The Korea Society of Physical Therapy.

Ho Youl Ryu1, Ki Song Kim2, In Cheol Jeon2

1Cardiac Wellness Center, Severance Cardiovascular Hospital, Yonsei University Health System, Seoul; 2Department of Physical Therapy, College of Life & Health Science, Hoseo University, Asan, Korea
Ki Song Kim
E-mail kskim68@hoseo.edu
Received September 17, 2018; Revised October 10, 2018; Accepted October 31, 2018.
This is an Open Access article distribute under the terms of the Creative Commons Attribution Non-commercial License (Http://creativecommons.org/license/by-nc/4.0.) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Purpose: This study investigated the effects of home-based exercise intensity on the aerobic capacity and 1 year re-hospitalization rate in patients with chronic heart failure (CHF).
Methods: Forty seven patients with CHF (males 33, females 14, age 61.3±9.8 years) participated in this study. The patients were allocated randomly to 3 groups in accordance with home-based exercise intensity: no home based exercise (NHE, 40%, n=19), moderate intensity home-based exercise (MIHE, 43%, n=20), and high intensity home based exercise (HIHE, 17%, n=8). All patients completed the symptom-limited cardiopulmonary exercise (CPX) test safely at the cardiac rehabilitation hospital.
Results: The NHE group significantly showed lower peak VO2 and a higher VE/VCO2 slope than the MIHE (p<0.05) and HIHE (p<0.01)groups. On the other hand, the NHE group did not show significant differences in the other hemodynamic responses, such as heart rate (HR) max, HR reserve, maximal systolic blood pressure (SBP), and SBP reserve. Nine out of 19 NHE patients (47%) were re-hospitalized related to heart disease and two out of 20 MIHE (10%) patients were re-hospitalized, but nobody in the HIHE group were re-hospitalized within 1 year from the CPX test.
Conclusion: In patients with CHF, home-based self-exercise is one of the important factors for reducing the re-hospitalization rate. In addition, improved aerobic capacity is strongly associated with a lower re-hospitalization rate. In particular, re-hospitalized CHF patients showed significant differences in respiratory parameters and hemodynamic parameters compared to the non-re-hospitalized patients.
Keywords : Heart failure, Aerobic capacity, Self-management


October 2018, 30 (5)
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