title: Validity of the Physical Activity Questionnaires IPAQ-SF and GPAQ for Cancer Survivors: Insights from a Spanish Cohort.
abstract: Regular physical activity (PA) decreases mortality risk in survivors of breast and colorectal cancer. Such impacts of exercise have prompted initiatives designed both to promote and adequately monitor PA in cancer survivors. This study examines the validity of 2 widely used self-report methods for PA determination, the International Physical Activity Questionnaire short version (IPAQ-SF) and Global Physical Activity Questionnaire (GPAQ). Both instruments were compared with the triaxial accelerometry (Actigraph) method as an objective reference standard. Study participants were 204 cancer survivors (both sexes, aged 18-79 years). Compared with accelerometry, both questionnaires significantly overestimated PA levels (across all intensities) and underestimated physical inactivity levels. No differences were detected between the 2 questionnaires except for a shorter inactivity time estimated by GPAQ (p=0.001). The Bland and Altman method confirmed that both questionnaires overestimated all PA levels. Receiver operating characteristic (ROC) analysis classified IPAQ and GPAQ as fair and poor predictors, respectively, of the proportions of survivors fulfilling international PA recommendations (≥150 min·week-1of moderate-vigorous PA). IPAQ-SF showed a higher sensitivity but lower specificity than GPAQ. Our data do not support the use of IPAQ-SF or GPAQ to determine PA or inactivity levels in cancer survivors.
authors.affiliation: Department of Medical Oncology, Hospital Universitario Puerta de Hierro, Majadahonda, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Ruiz-Casado
authors.affiliation: Universidad Europea. Instituto de Investigación i + 12, Madrid, Spain Ciencias del Deporte, European University of Madrid, Madrid, Spain.
authors.forename: L B
authors.initials: LB
authors.lastname: Alejo
authors.affiliation: Department of Health Sciences, European University Miguel de Cervantes, Valladolid, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Santos-Lozano
authors.affiliation: Department of Oncology, Hospital Universitario de Fuenlabrada, Madrid, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Soria
authors.affiliation: Department of Oncology, Hospital Universitario de Fuenlabrada, Madrid, Spain.
authors.forename: M J
authors.initials: MJ
authors.lastname: Ortega
authors.affiliation: Universidad Europea. Instituto de Investigación i + 12, Madrid, Spain Ciencias del Deporte, European University of Madrid, Madrid, Spain.
authors.forename: I
authors.initials: I
authors.lastname: Pagola
authors.affiliation: Instituto de Investigación i +12, Madrid, Spain Biomedicine, Universidad Europea de Madrid, Madrid, Spain.
authors.forename: C
authors.initials: C
authors.lastname: Fiuza-Luces
authors.affiliation: Department of Oncology, Hospital Universitario de Fuenlabrada, Madrid, Spain.
authors.forename: I
authors.initials: I
authors.lastname: Palomo
authors.affiliation: Physiotherapy and Nursing, University of Zaragoza, Huesca, Spain, Huesca, Spain.
authors.forename: N
authors.initials: N
authors.lastname: Garatachea
authors.affiliation: Department of Social Stratification, Universidad Nacional Educación a Distancia, Madrid, Spain.
authors.forename: H
authors.initials: H
authors.lastname: Cebolla
authors.affiliation: Universidad Europea. Instituto de Investigación i + 12, Madrid, Spain Ciencias del Deporte, European University of Madrid, Madrid, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Lucia
mesh_terms: D061725:Accelerometry; D000293:Adolescent; D000328:Adult; D000368:Aged; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009043:Motor Activity / Q000502:physiology*; D009369:Neoplasms / Q000534:rehabilitation*; D057566:Self Report; D012680:Sensitivity and Specificity; D013030:Spain; D011795:Surveys and Questionnaires; D017741:Survivors; D055815:Young Adult