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- W1982507527 abstract "In patients suffering from congestive heart failure (CHF) the impact of endurance training is often documented using maximal oxygen uptake as the criterion measure. Theoretically, ventilatory threshold (VT) as well as plots of heart rate (HR) and lactate concentration (LA) versus power output are equally valuable with less dependency on the attainment of maximal effort. PURPOSE: To test if endurance training in CHF patients can be prescribed and its effects evaluated by use of submaximal ergometric parameters only. METHOD: 30 stabile CHF patients with documented coronary artery disease (61 ± 9 years, n = 24 NYHA II, n = 6 NYHA III) were recruited. Subjects were randomly assigned to a cycle ergometer training group (T; 12 weeks, 4–5 days/week, 45 min/day at VT; n = 16) or to an inactive control group (CO; n = 14). Ramp protocols with simultaneous determination of gas exchange parameters, heart rate, and capillary lactate concentration were carried out before and after the intervention and were used for exercise prescription as well as for the documentation of fitness effects. RESULT: After the training phase, resting HR was reduced by 9 bpm in the training group (p < 0,001 versus CO whose resting HR remained unchanged). During incremental exercise average HR decreases of 6–9 bpm were detected in T as compared to 1–3 bpm in CO (p < 0.05). VT increased significantly by 0.13 1/min in T (p < 0.01 versus CO: −0.01 1/min). In contrast, training induced significant decreases in blood lactate concentration only at higher exercise intensities (7th and 8th min of the ramp protocol). CONCLUSION: This study suggests that endurance training at VT in patients with CHF is applicable and effective. A training effect can be reliably documented using VT as well as submaximal HR measurements whereas blood lactate concentrations do not give sufficient selectivity at lower submaximal exercise intensities. Therefore, it was shown for the first time that valid ergometric testing and exercise prescription is possible in CHF patients without requiring patients to exercise at their maximal level. The study was supported by a grant from the Deutsche Herzstiftung." @default.
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- W1982507527 date "2002-05-01" @default.
- W1982507527 modified "2023-09-26" @default.
- W1982507527 title "ENDURANCE TRAINING IN PATIENTS WITH CONGESTIVE HEART FAILURE" @default.
- W1982507527 doi "https://doi.org/10.1097/00005768-200205001-00954" @default.
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