RT journal article
T1 Changes in the school and non-school sedentary time in youth: the UP&DOWN longitudinal study
A1 Grao Cruces, Alberto
A1 Sánchez Oliva, David
A1 Padilla Moledo, María del Carmen
A1 Izquierdo Gómez, Rocío
A1 Cabanas Sánchez, Verónica
A1 Castro Piñero, José
A2 Didáctica de la Educación FísicaPlástica y Musical
AB The aims of this study were (i) to examine the sedentary time (ST) during different time periods [i.e., weekend, out-of-school weekdays hours, school hours, recess, physical education classes (PEC)] in children and adolescents; (ii) to identify 2-year longitudinal changes in the ST for these periods; and (iii) to examine if ST at baseline is associated with ST 2 years later. This was a 2-year follow-up study with 826 (51.9% boys) children (1st and 4th grades at baseline) and 678 (50.7% boys) adolescents (7th and 10th grades at baseline). Accelerometers were used to assess ST. Students spent more than 60% of their weekend, out-of-school hours and school hours in ST. During these periods, girls and adolescents were more sedentary than boys and children respectively (p<0.05). Over 2-year follow-up, ST increased during the weekend, out-of-school hours, school hours and recess in all subgroups studied (p<0.001). ST during PEC declined 2% per year in children (p<0.001) but it increased in adolescents (p<0.05). ST during the periods analyzed at baseline was lowly associated with ST during these periods 2 years later (intraclass correlations from <0.001 to 0.364). Interventions in these settings may be adequate if the intention is to avoid ST increase in students.
PB Taylor and Francis Group
SN 0264-0414
YR 2020
FD 2020
LK http://hdl.handle.net/10498/33798
UL http://hdl.handle.net/10498/33798
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 07-nov-2026