title: Predictors of walking capacity in peripheral arterial disease patients.
abstract: OBJECTIVE
  To estimate walking capacity in intermittent claudication patients through a prediction model based on clinical characteristics and the walking impairment questionnaire.
  
  
  METHODS
  The sample included 133 intermittent claudication patients of both genders aged between 30 and 80 years. Data regarding clinical characteristics, the walking impairment questionnaire and treadmill walking test performance were obtained. Multiple regression modeling was conducted to predict claudication onset distance and total walking distance using clinical characteristics (age, height, mass, body mass index, ankle brachial index lower, gender, history of smoking and co-morbid conditions) and walking impairment questionnaire responses. Comparisons of claudication onset distance and total walking distance measured during treadmill tests and estimated by a regression equation were performed using paired t-tests.
  
  
  RESULTS
  Co-morbid conditions (diabetes and coronary artery disease) and questions related to difficulty in walking short distances (walking indoors - such as around your house and walking 5 blocks) and at low speed (walking 1 block at average speed - usual pace) resulted in the development of new prediction models high significant for claudication onset distance and total walking distance (p<0.001). In addition, non-significant differences from the results obtained by the treadmill test and estimated by the current model (p>0.05) were observed.
  
  
  CONCLUSIONS
  The current study demonstrated that walking capacity can be adequately estimated based on co-morbid conditions and responses to the walking impairment questionnaire.
authors.affiliation: University of Pernambuco, School of Physical Education, Pernambuco/PE, Brazil.
authors.forename: Breno Quintella
authors.initials: BQ
authors.lastname: Farah
authors.forename: João Paulo dos Anjos
authors.initials: JP
authors.lastname: Souza Barbosa
authors.forename: Gabriel Grizzo
authors.initials: GG
authors.lastname: Cucato
authors.forename: Marcel da Rocha
authors.initials: Mda R
authors.lastname: Chehuen
authors.forename: Luis Alberto
authors.initials: LA
authors.lastname: Gobbo
authors.forename: Nelson
authors.initials: N
authors.lastname: Wolosker
authors.forename: Cláudia Lúcia de Moraes
authors.initials: CL
authors.lastname: Forjaz
authors.forename: Raphael Mendes
authors.initials: RM
authors.lastname: Ritti-Dias
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D055109:Ankle Brachial Index; D015992:Body Mass Index; D005080:Exercise Test; D005260:Female; D006801:Humans; D007383:Intermittent Claudication / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D058729:Peripheral Arterial Disease / Q000503:physiopathology*; D011237:Predictive Value of Tests; D015203:Reproducibility of Results; D012307:Risk Factors; D011795:Surveys and Questionnaires; D016138:Walking / Q000502:physiology*