Article

OBJECTIVES: To evaluate, in chronic heart failure (CHF) patients, feasibility,
safety, compliance and functional improvements of an eccentric (ECC) cycle
training protocol personalized by the rate of perceived exertion (RPE; 9-11 Borg
Scale), compared to concentric (CON) training at workload corresponding to the
first ventilatory threshold. METHODS:
Thirty patients were randomly allocated to
ECC or CON training (20 sessions). Compliance was evaluated with RPE, visual
analog scale for muscle soreness and monitoring of heart rate (HR). Functional
parameters were measured by the distance walked and the VO(2) uptake during the
6-minute walk test (6MWT) before and after training. RESULTS: Two patients were
excluded due to adverse effects in each group. RPE was 9-11 in ECC training while
it reached 12-14 in CON training. HR remained stable in ECC group during exercise
whereas it increased during CON exercise. 6MWT distance improved in both group
(ECC: +53m; CON: +33m). 6MWT VO(2) uptake remained stable in ECC group whereas it
increased in CON group. CONCLUSION: ECC training tailored by RPE appears to be an efficient and safe alternative for CHF patients. Indeed, it induces functional
improvement similar to conventional CON training with lower demand on the
cardiovascular system during exercise.
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Langue : ANGLAIS