title: Reproducibility of Anaerobic and Pain Thresholds in Male Patients With Intermittent Claudication.
abstract: OBJECTIVE
  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 ((Equation is included in full-text article.)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 (Equation is included in full-text article.)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 (Equation is included in full-text article.)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 (Equation is included in full-text article.)O2 at AT and PT were ≤20% and for HR ≤11 bpm.
  
  
  CONCLUSIONS
  The (Equation is included in full-text article.)O2 and HR measured at the AT and PT were moderately to highly reproducible in male patients with IC. The HR and (Equation is included in full-text article.)O2 at AT and PT may be used to establish training intensity and evaluate training effectiveness for these patients in clinical practice and research.
authors.affiliation: School of Physical Education and Sport (Drs Chehuen, Cucato, Costa, and Forjaz) and Division of Vascular and Endovascular Surgery, Faculty of Medicine (Drs Chehuen, Cucato, Saes, and Wolosker), University of São Paulo, São Paulo, Brazil; College of Healthcare Sciences, James Cook University, Townsville, Queensland, Australia (Drs Leicht); and School of Physical Education, University of Pernambuco, Pernambuco, Brazil (Dr Ritti-Dias).
authors.forename: Marcel
authors.initials: M
authors.lastname: da Rocha Chehuen
authors.forename: Gabriel Grizzo
authors.initials: GG
authors.lastname: Cucato
authors.forename: Glauco Fernandes
authors.initials: GF
authors.lastname: Saes
authors.forename: Luiz Augusto Riani
authors.initials: LA
authors.lastname: Costa
authors.forename: Anthony Scott
authors.initials: AS
authors.lastname: Leicht
authors.forename: Raphael Mendes
authors.initials: RM
authors.lastname: Ritti-Dias
authors.forename: Nelson
authors.initials: N
authors.lastname: Wolosker
authors.forename: Cláudia Lúcia
authors.initials: CL
authors.lastname: de Moraes Forjaz
mesh_terms: D000368:Aged; D015308:Anaerobic Threshold; D005080:Exercise Test; D006339:Heart Rate; D006801:Humans; D007383:Intermittent Claudication / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D010101:Oxygen Consumption; D017288:Pain Threshold; D015203:Reproducibility of Results