title: Correlates of objectively measured physical activity in adolescents with Down syndrome: the UP & DOWN study.
abstract: BACKGROUND
  Correlates of physical activity (PA) have not been explored in adolescents with Down syndrome (DS). Understanding correlates of PA could provide information to develop strategies to increase levels of PA in this target population.
  
  
  OBJECTIVE
  The aim of this study was to identify potential correlates of PA in adolescents with DS.
  
  
  METHODS
  Information about levels of PA and their potential correlates was collected in 98 adolescents with DS (63 males, aged 11-20 years) using accelerometers and proxy-reported questionnaires. Analysis of covariance and multiple linear regression analyses were conducted to examine correlates of PA.
  
  
  RESULTS
  Our findings showed that participant's age and socioeconomic status were associated with levels of PA as non-modifiable correlates. Also, parental support, father PA, television-viewing time with siblings and with friends were associated with levels of PA as modifiable correlates.
  
  
  CONCLUSIONS
  Both modifiable and non-modifiable factors are associated with levels of PA in adolescents with DS. Therefore, a better understanding of correlates of PA could contribute to develop strategies on PA promotion in adolescents with DS.
authors.affiliation: Department of Physical Education, Sport and Human Movement, Autonomous University of Madrid (Madrid), Spain.. rocio.izquierdo@uam.es.
authors.forename: Rocío
authors.initials: R
authors.lastname: Izquierdo-Gomez
authors.affiliation: Department of Physical Education, Sport and Human Movement, Autonomous University of Madrid (Madrid), Spain.. oscar.veiga@uam.es.
authors.forename: Óscar L
authors.initials: ÓL
authors.lastname: Veiga
authors.affiliation: Department of Physical Education, Sport and Human Movement, Autonomous University of Madrid (Madrid), Spain.. alberto.sanz.serrano@uam.es.
authors.forename: Alberto
authors.initials: A
authors.lastname: Sanz
authors.affiliation: Department of Kinesiology and Nutrition, University of Illinois (Chicago), Illinois, USA.. fernhall@uic.edu.
authors.forename: Bo
authors.initials: B
authors.lastname: Fernhall
authors.affiliation: Department of Physical Education, Sport and Human Movement, Autonomous University of Madrid (Madrid), Spain.. mario.diaz@uam.es.
authors.forename: Mario
authors.initials: M
authors.lastname: Díaz-Cueto
authors.affiliation: Department of Physical Education, Sport and Human Movement, Autonomous University of Madrid (Madrid), Spain.. ariel.villagra@uam.es.
authors.forename: Ariel
authors.initials: A
authors.lastname: Villagra
mesh_terms: D061725:Accelerometry; D000293:Adolescent; D002648:Child; D004314:Down Syndrome / Q000453:epidemiology; D015444:Exercise; D005190:Family; D005260:Female; D006801:Humans; D008297:Male; D012959:Socioeconomic Factors; D011795:Surveys and Questionnaires; D055815:Young Adult