title: Comparison of the IPAQ-A and actigraph in relation to VO2max among European adolescents: the HELENA study.
abstract: The purpose was to compare data obtained from a modified, long, self-administered version of the International Physical Activity Questionnaire (IPAQ-A) with objective data obtained in parallel from Actigraph accelerometers, and VO(2)max in adolescents. The study comprised a total of 2018 adolescents (46% male) from ten European cities participating in the HELENA (Healthy Lifestyle in Europe by Nutrition in Adolescence) study. Physical activity was assessed over seven consecutive days by accelerometry and expressed as min/day of moderate, vigorous, and moderate to vigorous (MVPA) physical activity (PA). PA was also assessed with the IPAQ-A. VO(2)max was estimated from a 20-m shuttle run test. Poor to fair correlations between the two methodologies were found for the whole study sample and when stratified by age and gender (r(s) = 0.08-0.26, p < 0.01). On average, the self-reported time spent in moderate PA was higher compared to the time measured with the accelerometer, while the differences between both instruments were less clear for vigorous intensity. Adolescents reporting high levels of PA (3rd tertile IPAQ-A) also showed higher levels of PA (accelerometers) in all the study variables (moderate, vigorous and MVPA), compared to adolescents reporting low PA (1st tertile IPAQ-A) (all p < 0.001). Both methods were moderately correlated with estimated VO(2)max. Within the HELENA-study, the IPAQ-A showed the modest comparability with the accelerometer data for assessing PA in each intensity level and was the highest for vigorous intensity. Both instruments are able to detect the adolescents with the highest cardio respiratory fitness, which are the most active adolescents.
authors: Department of Public Health, Ghent University, Ghent, Belgium. Charlene.Ottevaere@UGent.be
authors: Charlene
authors: C
authors: Ottevaere
authors: Inge
authors: I
authors: Huybrechts
authors: Ilse
authors: I
authors: De Bourdeaudhuij
authors: Michael
authors: M
authors: Sjöström
authors: Jonatan R
authors: JR
authors: Ruiz
authors: Francisco B
authors: FB
authors: Ortega
authors: Maria
authors: M
authors: Hagströmer
authors: Kurt
authors: K
authors: Widhalm
authors: Dénes
authors: D
authors: Molnár
authors: Luis A
authors: LA
authors: Moreno
authors: Laurent
authors: L
authors: Beghin
authors: Anthony
authors: A
authors: Kafatos
authors: Angela
authors: A
authors: Polito
authors: Yannis
authors: Y
authors: Manios
authors: David
authors: D
authors: Mártinez-Gómez
authors: Stefaan
authors: S
authors: De Henauw
mesh_terms: D056044:Actigraphy / Q000379:methods / Q000592:standards*; D000293:Adolescent; D002648:Child; D005060:Europe; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test / Q000379:methods / Q000592:standards; D005260:Female; D006801:Humans; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D010101:Oxygen Consumption / Q000502:physiology*; D010809:Physical Fitness / Q000502:physiology; D017678:Sex Distribution; D011795:Surveys and Questionnaires / Q000592:standards*