O7-5 School-based interventions to reduce accelerometer based children's sedentary time: presentation of a systematic review
Résumé
Background
Sedentary time (ST) is considered as a major public health
concern. Children are particularly vulnerable as their ST
increase with age. Therefore, school-based interventions aimed
to reduce and prevent children ST are burgeoning. Previously a
review found that school-based interventions proposing
multiples components which include standing desks appeared
to be more effective compared to uni-component studies
(Hegarty et al., 2016). However, this result only depended on
11 records published before 2016 and must be verified since
the growing number of school-based interventions are
proposed.
Objective: To continue the evaluation of the effectiveness of
school-based interventions published since the previous review
(2016).
Methods
A total of 4 databases were examined: PubMed-Medline,
PsycINFO, ScienceDirect and Google Scholar. The search was conducted using keywords in English, the main ones being: 1)
‘‘Sedentary Time’’ 2) ‘‘Intervention’’ 3) ‘‘Child’’, 4) ‘‘School’’.
Records published between August 2016 and August 2019 with
objective measure of ST were analysed. Data were collected and
compiled by an author according to PRISMA criteria.
Results
14 studies were included: 9 studies were multi-components
(64%) and 5 were uni-component (36%). The method of
measurement used in all studies was accelerometry.
Environmental and organizational changes were the most
used components. Among fourteen, nine studies reported
significant results on post-intervention: respectively, with three
being uni-component and six being multi-components. The
long-term effect remain undetermined.
Conclusion
Uni component studies used only environmental reorganization which reduces ST in the short term. This finding had
already been supported in previous interventions studies using
standing desks that had been identified by the last systematic
review (Aminian et al., 2015; Clemes et al., 2016). The uni- and
multi-components studies do not differ clearly in the results
obtained. However, multi-components interventions seem to
be the more promising strategy to reduce ST and to develop
healthy habits at long term. Interventions with follow-up
measures at long term are required.