Reproducibility of anaerobic and pain thresholds in male patients with intermittent claudication

da Rocha Chehuen, Marcel, Cucato, Gabriel Grizzo, Saes, Glauco Fernandes, Costa, Luiz Augusto Riani, Leicht, Anthony Scott, Ritti-Dias, Raphael Mendes, Wolosker, Nelson, and Forjaz, Cláudia Lúcia de Moraes (2016) Reproducibility of anaerobic and pain thresholds in male patients with intermittent claudication. Journal of Cardiopulmonary Rehabilitation and Prevention, 36 (5). pp. 358-367.

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Purpose: Maximal and submaximal parameters assessed during treadmill tests are used to prescribe exercise training and assess exercise-induced adaptations in patients with intermittent claudication (IC). Although reproducibility of maximal parameters is well documented, the reproducibility of submaximal is not clear. The aim of this study was to identify the reproducibility (reliability and agreement) of heart rate (HR) and oxygen uptake (O2) measured at the anaerobic (AT) and the pain (PT) thresholds assessed during a maximal test in patients with IC.

Methods: Twenty male patients with IC underwent 2 cardiopulmonary treadmill tests to maximal pain. The HR and O2 at the AT and PT were identified, and differences between repeat tests were compared. Reliability was determined by intraclass coefficient correlation (ICC). Agreement was assessed by coefficient of variation (CV), standard error of measurement (SEM), smallest detectable difference (SDD), and limits of agreement (LOA).

Results: The O2 at AT and PT exhibited moderate reliability and moderate/good agreement (ICC = 0.73 and 0.70; CV = 9.6% and 11.1%, respectively). The HR at the AT and PT exhibited high reliability and good agreement (ICC = 0.87 and 0.92; SEM = 3.9 and 3.2 bpm; SDD = 10.8 and 8.8 bpm, respectively). The LOA for O2 at AT and PT were <=20% and for HR <=11 bpm.

Conclusions: The O2 and HR measured at the AT and PT were moderately to highly reproducible in male patients with IC. The HR and O2 at AT and PT may be used to establish training intensity and evaluate training effectiveness for these patients in clinical practice and research.

Item ID: 47688
Item Type: Article (Research - C1)
ISSN: 1932-751X
Keywords: agreement, cardiopulmonary exercise test, exercise, prescription, peripheral artery disease, reliability
Funders: Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP), Coordenação de Aperfeiçoamento de Pessoal de Nivel Superior (CAPES), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Projects and Grants: FAPESP #09/17371-6, CAPES #19017/12-0, CNPq #503111/2010-4 & 141737/2012-3
Date Deposited: 14 Mar 2017 02:51
FoR Codes: 32 BIOMEDICAL AND CLINICAL SCIENCES > 3201 Cardiovascular medicine and haematology > 320101 Cardiology (incl. cardiovascular diseases) @ 50%
42 HEALTH SCIENCES > 4207 Sports science and exercise > 420702 Exercise physiology @ 50%
SEO Codes: 92 HEALTH > 9201 Clinical Health (Organs, Diseases and Abnormal Conditions) > 920103 Cardiovascular System and Diseases @ 100%
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