Effectiveness of a school-based intervention on physical activity and screen time among adolescents.
J Sci Med Sport
; 25(3): 242-248, 2022 Mar.
Article
in English
| MEDLINE | ID: covidwho-1747732
ABSTRACT
OBJECTIVES:
To evaluate the effectiveness of a multi-component school-based intervention on physical activity (PA) and screen time (ST) among urban adolescents in Bangladesh.DESIGN:
Cluster-randomised controlled trial.METHODS:
Eight high schools were randomly assigned to either intervention group (IG) or control group (CG). Participants (nâ¯=â¯160 per group, 40 school) were in grades 8-9. A 12-week multi-component intervention was developed based on the WHO's Health-Promoting Schools framework. The IG received weekly supervised circuit exercise (30â¯min/week), health education session (10â¯min/week) with health educational materials, and lunchtime sports activities (20â¯min/week). The main outcome measures included self-reported PA, ST, knowledge on PA and SB, which were assessed at baseline, 8 and 12â¯weeks. Repeated measures ANCOVA was used to evaluate the intervention effects.RESULTS:
Total PA (MET-min/week) was increased from baseline to 8 and 12â¯weeks in the IG (3%-5%) but decreased in the CG (5%-3%) and significantly improved in the IG compared to the CG (pâ¯<â¯0.001) over time. Average ST (min/day) reduced from baseline to 8 and 12â¯weeks in the IG (28%-35%), while remained unchanged in the CG (6%-5%). The IG had a significantly lower average ST than the CG at 12â¯weeks. The average knowledge scores on PA and SB were significantly higher in the IG than the CG at 12â¯weeks (pâ¯<â¯0.001).CONCLUSIONS:
Our intervention has demonstrated some promising effects on increasing PA, reducing ST, and improving PA and SB knowledge. This study underscores the need for a scaled-up evaluation in other locations including rural settings.Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Adolescent Behavior
/
Screen Time
Type of study:
Experimental Studies
/
Prognostic study
/
Randomized controlled trials
Limits:
Adolescent
/
Humans
Language:
English
Journal:
J Sci Med Sport
Journal subject:
Sports Medicine
Year:
2022
Document Type:
Article
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