title: Objective assessment of sedentary time and physical activity throughout the week in adolescents with Down syndrome. The UP&DOWN study.
abstract: This study aimed to examine the patterns of sedentary time and physical activity (PA) throughout the week in adolescents with Down syndrome (DS). The study comprised 109 adolescents with DS (68 males and 41 females) aged 11-20 years, participating in the UP&DOWN study, but only a total of 100 adolescents provided valid data. Sedentary time and total, light, moderate, vigorous, and moderate-to-vigorous PA (MVPA) were measured by accelerometers. There were no significant differences in the time spent in sedentary time and PA levels between weekdays vs. weekend days, as well as between school time vs. after school-time periods (all p>0.05). Adolescent males engaged in more total PA, moderate PA, vigorous PA and MVPA than females on weekend days (all p<0.05). Differences between age groups showed that sedentary time increases and PA decreases with advancing age in all analyses, so that the oldest groups were more sedentary and less active (all p<0.05). Only 43% of adolescents with DS met the PA recommendations of ≥60min/day of MVPA. Our findings show valuable information to be considered in future interventions aiming to decrease sedentary time and increase PA levels in adolescents with DS.
authors.affiliation: Department of Physical Education, Sport and Human Movement, Autonomous University of Madrid, Madrid, Spain. Electronic address: 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.
authors.forename: David
authors.initials: D
authors.lastname: Martínez-Gómez
authors.affiliation: Department of Physical Education, Sport and Human Movement, Autonomous University of Madrid, Madrid, Spain.
authors.forename: Aitor
authors.initials: A
authors.lastname: Acha
authors.affiliation: Department of Physical Education, Sport and Human Movement, Autonomous University of Madrid, Madrid, Spain.
authors.forename: Oscar L
authors.initials: OL
authors.lastname: Veiga
authors.affiliation: Department of Physical Education, Sport and Human Movement, Autonomous University of Madrid, Madrid, Spain.
authors.forename: Ariel
authors.initials: A
authors.lastname: Villagra
authors.affiliation: Department of Physical Education, Sport and Human Movement, Autonomous University of Madrid, Madrid, Spain.
authors.forename: Mario
authors.initials: M
authors.lastname: Diaz-Cueto
mesh_terms: D061725:Accelerometry; D000293:Adolescent; D002648:Child; D004314:Down Syndrome; D015444:Exercise; D005260:Female; D006801:Humans; D008297:Male; D009043:Motor Activity / Q000502:physiology*; D050177:Overweight; D057185:Sedentary Behavior; D012737:Sex Factors; D013997:Time Factors; D055815:Young Adult
keywords: Accelerometers; Adolescent; Down syndrome; Physical activity; Sedentary behaviour