A cycle ergometer exercise program improves exercise capacity and inspiratory muscle function in hospitalized patients awaiting heart transplantation: a pilot study

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Data
2016
Autores
Forestieri, Patricia [UNIFESP]
Guizilini, Solange [UNIFESP]
Peres, Monique [UNIFESP]
Bublitz, Caroline [UNIFESP]
Bolzan, Douglas Willian [UNIFESP]
Rocco, Isadora Salvador [UNIFESP]
Santos, Vinicius Batista [UNIFESP]
Moreira, Rita Simone Lopes [UNIFESP]
Breda, João Roberto [UNIFESP]
Almeida, Dirceu Rodrigues de [UNIFESP]
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OBJECTIVE: The purpose of this study was to evaluate the effect of a cycle ergometer exercise program on exercise capacity and inspiratory muscle function in hospitalized patients with heart failure awaiting heart transplantation with intravenous inotropic support. METHODS: Patients awaiting heart transplantation were randomized and allocated prospectively into two groups: 1) Control Group (n=11) – conventional protocol; and 2) Intervention Group (n=7) – stationary cycle ergometer exercise training. Functional capacity was measured by the six-minute walk test and inspiratory muscle strength assessed by manovacuometry before and after the exercise protocols. RESULTS: Both groups demonstrated an increase in six-minute walk test distance after the experimental procedure compared to baseline; however, only the intervention group had a significant increase (P=0.08 and P=0.001 for the control and intervention groups, respectively). Intergroup comparison revealed a greater increase in the intervention group compared to the control (P<0.001). Regarding the inspiratory muscle strength evaluation, the intragroup analysis demonstrated increased strength after the protocols compared to baseline for both groups; statistical significance was only demonstrated for the intervention group, though (P=0.22 and P<0.01, respectively). Intergroup comparison showed a significant increase in the intervention group compared to the control (P<0.01). CONCLUSION: Stationary cycle ergometer exercise training shows positive results on exercise capacity and inspiratory muscle strength in patients with heart failure awaiting cardiac transplantation while on intravenous inotropic support.
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Brazilian Journal Of Cardiovascular Surgery. Sao paulo sp, v. 31, n. 5, p. 389-395, 2016.