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Titre : | Association Between 6-Minute Walk Test Distance and Objective Variables of Functional Capacity After Exercise Training in Elderly Heart Failure Patients With Preserved Ejection Fraction: A Randomized Exercise Trial (2017) |
Auteurs : | Sara Maldonado-Martín ; Peter H. Brubaker ; Joel Eggebeen |
Type de document : | Article |
Dans : | Archives of Physical Medicine and Rehabilitation (2017/3, 2017) |
Article en page(s) : | pp. 600-603 |
Langues: | Anglais |
Descripteurs : |
HE Vinci Epreuve d'effort ; Rééducation et réadaptation |
Mots-clés: | Exercise test ; Oxygen consumption ; Consommation d'oxygène ; Physical fitness ; Aptitude physique |
Résumé : |
Objective To evaluate the change in the 6-minute walk test (6-MWT) distance relative to changes in key functional capacity measures after 16 weeks of exercise training in older patients (≥65y) who have heart failure with preserved ejection fraction (HFpEF). Design Prospective, randomized, single-blinded (by researchers to patient group) comparison of 2 groups of HFpEF patients. Setting Hospital and clinic records; ambulatory outpatients. Participants Participants (N=47) randomly assigned to an attention control (AC) (n=24) or exercise training (ET) (n=23) group. Intervention The ET group performed cycling and walking at 50% to 70% of peak oxygen uptake (View the MathML sourceV˙o2peak) intensity (3d/wk, 60min each session). Main Outcome Measures View the MathML sourceV˙o2peak, ventilatory threshold (VT), and 6-MWT distance were measured at baseline and after the 16-week study period. Results At follow-up, the 6-MWT distance was higher than at the baseline in both the ET (11%, P=.005) and AC (9%, P =.004) groups. In contrast, View the MathML sourceV˙o2peak and VT values increased in the ET group (19% and 11%, respectively; P =.001), but decreased in the AC group at follow-up (2% and 0%, respectively). The change in View the MathML sourceV˙o2peak versus 6-MWT distance after training was also not significantly correlated in the AC group (r=.01, P=.95) or in the ET group (r=.13, P=.57). The change in 6-MWT distance and VT (an objective submaximal exercise measure) was also not significantly correlated in the AC group (r=.08, P=.74) or in the ET group (r=.16, P=.50). Conclusions The results of this study challenge the validity of using the 6-MWT as a serial measure of exercise tolerance in elderly HFpEF patients and suggest that submaximal and peak exercise should be determined objectively by VT and View the MathML sourceV˙o2peak in this patient population. |
Disponible en ligne : | Oui |
En ligne : | https://login.ezproxy.vinci.be/login?url=https://www.sciencedirect.com/science/article/pii/S000399931630987X |