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Relationship between school rhythm and physical activity in adolescents: the HELENA study

Abstract : The aim was to assess the relationship between school rhythm and physical activity (PA) in adolescents. The study included 2024 adolescents (12.5–17.4 years). Participants wore an accelerometer for 7 days. A short school rhythm was defined as a short time at school with short recesses and less time in teaching per day (Group 1). A long school rhythm was defined as a longer time at school with more time in teaching and recess (Group 2). Adolescents in group 1 performed less moderate to vigorous PA (MVPA) than those in group 2 per week (P < .0001), especially during school days (recess: 3.9 ± 4.0 vs. 9.8 ± 7.9 min.day-1 ; P<.0001; teaching hours: 14.5 ± 9.8 vs. 19.1 ± 12.0 min.day-1 ; P<.0001). Adolescents in group 1 were less likely to meet the PA recommendations than were adolescents in group 2: 30.7% vs. 34.1% (P<.0001). During school days, the percentage of adolescents who spent more than 2 h.day-1 in sedentary activities was greater in the group 1 (P<.001). Our results suggest that leisure-time out-of-school hours is used mainly for sedentary activities, and that school time provides a good opportunity for promoting PA.
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https://hal.univ-lille.fr/hal-02177269
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Soumis le : mercredi 17 juillet 2019 - 13:54:38
Dernière modification le : mercredi 9 décembre 2020 - 10:54:11

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Jeremy Vanhelst, Laurent Beghin, Alain Duhamel, Stefaan de Henauw, Dénes Molnar, et al.. Relationship between school rhythm and physical activity in adolescents: the HELENA study. Journal of Sports Sciences, Taylor & Francis: SSH Journals, 2017, 35 (16), pp.1666-1673. ⟨10.1080/02640414.2016.1229013⟩. ⟨hal-02177269⟩

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