title: Measuring the Ability to Tolerate Activity-Related Discomfort: Initial Validation of the Physical Activity Acceptance Questionnaire (PAAQ).
abstract: BACKGROUND
  Physical activity (PA) is essential for health, but many adults find PA adherence challenging. Acceptance of discomfort related to PA may influence an individual's ability to begin and sustain a program of exercise. The aim of this study was to evaluate the psychometric properties of the Physical Activity Acceptance Questionnaire (PAAQ).
  
  
  METHODS
  The PAAQ was administered to 3 distinct samples (N = 418). Each sample completed additional self-report measures; 1 sample also wore accelerometers for 7 days (at baseline and 6 months later).
  
  
  RESULTS
  The PAAQ demonstrated high internal validity for its total score (α = .89) and 2 subscales (Cognitive Acceptance α = .86, Behavioral Commitment α = .85). The PAAQ also showed convergent validity with measures of mindfulness, self-reported physical activity levels, and accelerometer-verified levels of moderate-to-vigorous PA (MVPA; P-values < .05). The Cognitive Acceptance subscale showed predictive validity for objectively-verified PA levels among individuals attempting to increase PA over 6 months (P = .05). Test-retest reliability for a subset of participants (n = 46) demonstrated high consistency over 1 week (P < .0001).
  
  
  CONCLUSIONS
  The PAAQ demonstrates sound psychometric properties, and shows promise for improving the current understanding of PA facilitators and barriers among adults.
authors.affiliation: Dept of Psychology, Drexel University, Philadelphia, PA.
authors.forename: Meghan L
authors.initials: ML
authors.lastname: Butryn
authors.forename: Danielle
authors.initials: D
authors.lastname: Arigo
authors.forename: Greer A
authors.initials: GA
authors.lastname: Raggio
authors.forename: Alison Infield
authors.initials: AI
authors.lastname: Kaufman
authors.forename: Stephanie G
authors.initials: SG
authors.lastname: Kerrigan
authors.forename: Evan M
authors.initials: EM
authors.lastname: Forman
mesh_terms: D061725:Accelerometry / Q000295:instrumentation*; D000328:Adult; D000368:Aged; D015444:Exercise / Q000523:psychology*; D017079:Exercise Tolerance; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D064866:Mindfulness; D011237:Predictive Value of Tests; D011594:Psychometrics / Q000706:statistics & numerical data*; D015203:Reproducibility of Results; D057566:Self Report; D011795:Surveys and Questionnaires
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