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Benefits of exercise training in the treatment of heart failure: study with a control group |
da Silva MS, Bocchi EA, Guimaraes GV, Padovani CR, Silva MH, Pereira SF, Fontes RD |
Arquivos Brasileiros de Cardiologia 2002 Oct;79(4):357-362 |
clinical trial |
2/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: No; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: No; Point estimates and variability: No. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed* |
OBJECTIVE: Exercise training programs have been proposed as adjuncts to treatment of heart failure. The effects of a 3-month-exercise-training-program with 3 exercise sessions per week were assessed in patients with stable systolic chronic heart failure. METHODS: We studied 24 patients with final left ventricle diastolic diameter of 70 +/- 10 mm and left ventricular ejection fraction of 37 +/- 4%. Mean age was 52 +/- 16 years. Twelve patients were assigned to an exercise training group (G1), and 12 patients were assigned to a control group (G2). Patients underwent treadmill testing, before and after exercise training, to assess distance walked, heart rate, systolic blood pressure, and double product. RESULTS: In G2 group, before and after 3 months, we observed, respectively, distance walked 623 +/- 553 and 561 +/- 460 m (ns); peak heart rate 142 +/- 23 and 146 +/- 33 b/min (ns); systolic blood pressure 154 +/- 36 and 164 +/- 26 mmHg (ns); and double product 22,211 +/- 6,454 and 24,293 +/- 7,373 (ns). In G1 group, before and after exercise, we observed: distance walked 615 +/- 394 and 970 +/- 537 m (p < 0.003); peak heart rate 143 +/- 24 and 143 +/- 29 b/min (ns); systolic blood pressure 136 +/- 33 and 133 +/- 24 mmHg (ns); and double product 19,907 +/- 7,323 and 19,115 +/- 5,776, respectively. Comparing the groups, a significant difference existed regarding the variation in the double product, and in distance walked. CONCLUSION: Exercise training programs in patients with heart failure can bring about an improvement in physical capacity.
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