Physical Activity through a Classroom-Based Intervention

A Pragmatic Non-Randomized Trial among Swedish Adolescents in an Upper Secondary School

Bibliographic Data

ID15476891
AuthorsFilip Christiansen (0000-0002-4731-2365, Karolinska Institutet, corresponding author), Viktor H Ahlqvist (0000-0003-1383-3194, Karolinska Institutet), Mikaela Nyroos (0000-0002-9195-4816, Umeå University), Hans O Löfgren (0000-0003-2588-0780, Umeå University), Daniel Berglind (0000-0003-0616-7779, Centre for Palaeogenetics)
Year2021
Volume18
Issue21
Pages11041-11041
Publication date2021-10-20
Open AccessYes
TypeARTICLE
VenueInternational Journal of Environmental Research and Public Health (JOURNAL)
Journal identifiersISSN: 1661-7827 • E-ISSN: 1660-4601
PublisherMultidisciplinary Digital Publishing Institute (PUBLISHER • CH)
DOI10.3390/ijerph182111041
PMID34769561
OpenAlexW3210759836
LanguageEN
References cited11

Schools are an important arena to curb the decline in physical activity (PA) in youth. School-based interventions with accelerometer-measured PA are warranted. This study aimed to increase accelerometer-measured PA in adolescents following a 12-month school-based intervention. Two school-classes of 16-18-year-old Swedish students were allocated to intervention group and control group. Accelerometer-measured PA was gathered at baseline, 6- and 12-month follow-up. Mixed-effects linear regression was used to investigate between-group and within-group differences in mean minutes per day (min/day) of moderate to vigorous PA (MVPA), light PA (LPA) and sedentary time (ST). Fifty-seven students participated (intervention group = 31, control group = 26). At 12-month follow-up, the intervention group performed 5.9 (95% CI: -4.3, 16.2) min/day more in MVPA, 1.8 (95% CI: -17.9, 14.2) min/day less in LPA, and 4.1 (95% CI: -27.3, 19.2) min/day less in ST compared to the control group. Within the intervention group, there was no significant change in PA. Within the control group, LPA decreased (95% CI: -19.6, -0.2; p = 0.044) and ST increased (95% CI: 1.8, 30.8; p = 0.028). Although no between-group differences in PA were statistically significant, the within-group changes may suggest a preventive impact on the decline in PA during adolescence

Environmental health · Intervention (counseling · Poison control · Psychiatry · Randomized controlled trial · Suicide prevention · Children's Physical and Motor Development · Medicine · Obesity, Physical Activity, Diet · Physical Activity and Health · Psychology