Effects of age on aerobic capacity in heart failure patients under beta-blocker therapy: Possible impact in clinical decision-making?

Ciolac, Emmanuel Gomes; Bocchi, Edimar Alcides; Fernandes-Silva, Miguel Morita; Tavares, Aline; Teixeira-Neto, Iram Soares; Guimarães, Guilherme Veiga

doi:10.5603/cj.2013.0166

Cited by 3 publications

(2 citation statements)

References 28 publications

(50 reference statements)

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“…Some authors have reported that the 6MWT was related to percentage of ⩒O 2 , corresponding with anaerobic threshold in HF patients, 34 , 35 and that HR was closely related to ⩒O 2 in patients with HF. 36 - 38 In addition, the American Heart Association and some authors suggest exercising at moderate HR intensities. 32 , 39 , 40 In order to determine exercise intensity based on 6MWT and ST, HR "moderate-load" training should be calculated based on HR 6MWT , and HR "high-load" training should be based on HR ST .…”

Section: Discussionmentioning

confidence: 99%

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Alternatives to Aerobic Exercise Prescription in Patients with Chronic Heart Failure

Oliveira¹,

Zanussi²,

Sprovieri³

et al. 2016

Arquivos Brasileiros De Cardiologia

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BackgroundExercise is essential for patients with heart failure as it leads to a reduction in morbidity and mortality as well as improved functional capacity and oxygen uptake (⩒O2). However, the need for an experienced physiologist and the cost of the exam may render the cardiopulmonary exercise test (CPET) unfeasible. Thus, the six-minute walk test (6MWT) and step test (ST) may be alternatives for exercise prescription.ObjectiveThe aim was to correlate heart rate (HR) during the 6MWT and ST with HR at the anaerobic threshold (HRAT) and peak HR (HRP) obtained on the CPET.MethodsEighty-three patients (58 ± 11 years) with heart failure (NYHA class II) were included and all subjects had optimized medication for at least 3 months. Evaluations involved CPET (⩒O2, HRAT, HRP), 6MWT (HR6MWT) and ST (HRST).ResultsThe participants exhibited severe ventricular dysfunction (ejection fraction: 31 ± 7%) and low peak ⩒O2 (15.2 ± 3.1 mL.kg-1.min-1). HRP (113 ± 19 bpm) was higher than HRAT (92 ± 14 bpm; p < 0.05) and HR6MWT (94 ± 13 bpm; p < 0.05). No significant difference was found between HRP and HRST. Moreover, a strong correlation was found between HRAT and HR6MWT (r = 0.81; p < 0.0001), and between HRP and HRST (r = 0.89; p < 0.0001).ConclusionThese findings suggest that, in the absence of CPET, exercise prescription can be performed by use of 6MWT and ST, based on HR6MWT and HRST

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Section: Discussionmentioning

confidence: 99%

“…Moreover, HR monitoring in combination with modified Borg scale of perceived exertion is recommended when prescribing exercises for HF patients on beta-blockers. 38 , 41…”

Section: Discussionmentioning

confidence: 99%