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A cycle ergometer exercise program improves exercise capacity and inspiratory muscle function in hospitalized patients awaiting heart transplantation: a pilot study |
Forestieri P, Guizilini S, Peres M, Bublitz C, Bolzan DW, Rocco IS, Santos VB, Moreira RSL, Breda JR, de Almeida DR, Carvalho ACC, Arena R, Gomes WJ |
Revista Brasileira de Cirurgia Cardiovascular [Brazilian Journal of Cardiovascular Surgery] 2016 Sep-Oct;31(5):389-395 |
clinical trial |
6/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: Yes; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed* |
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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