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Erschienen in:

04.09.2018 | Original Article

Are adolescents really being sedentary or inactive when at school? An analysis of sedentary behaviour and physical activity bouts

verfasst von: Bruno Gonçalves Galdino da Costa, Kelly Samara da Silva, Luís Eduardo Argenta Malheiros, Giseli Minatto, Luiz Rodrigo Augustemak de Lima, Edio Luiz Petroski

Erschienen in: European Journal of Pediatrics | Ausgabe 11/2018

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Abstract

This study analysed physical activity (PA) and sedentary behaviour (SB) performed in bouts during schooltime. Adolescents of two schools answered a questionnaire, had their height and weight measured and wore accelerometers during schooltime. Moderate-to-vigorous intensity PA was estimated in bouts of 2, 5 and 10 min, and SB in bouts of 5, 10, 30 and 60 min. Body mass index was calculated, and adolescents were classified as overweight or normal weight. Frequency, duration and volume of PA and SB were calculated for the whole sample and for those who performed at least one bout weekly. PA and SB differences between gender and weight status were tested using Mann-Whitney and t tests. A total of 415 adolescents (54% girls, 12.3 ± 1.3 years old, 34.6% overweight) performed 0.1 (± 0.2), 0.2 (± 0.5) and 0.4 (± 0.6) bouts of 10, 5 and 2 min of PA, and 10.6 (± 2.0), 6.0 (± 1.3), 1.1 (± 0.9) and 0.4 (± 0.5) bouts/day of 5, 10, 30 and 60 min of SB, respectively. Boys accumulated less SB and more PA in bouts. No differences were found for weight status.
Conclusion: Adolescents hardly engaged in bouted PA and accumulated more SB in smaller bouts during schooltime. Bouted PA and SB were not associated with weight status.
What is Known:
Adolescents are not engaging in enough PA and are accumulating large volumes of SB, which might negatively impact their health.
• Schools play an important role in daily overall PA, with opportunities such as PE classes and recesses. But most classes are still undertaken in seated positions.
What is New:
Adolescents hardly engage in bouted (> 10 m) PA when at school., and most SB is accumulated in short bouts (≤  10m).
Weight status was not associated with bouted PA or SB at school
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Metadaten
Titel
Are adolescents really being sedentary or inactive when at school? An analysis of sedentary behaviour and physical activity bouts
verfasst von
Bruno Gonçalves Galdino da Costa
Kelly Samara da Silva
Luís Eduardo Argenta Malheiros
Giseli Minatto
Luiz Rodrigo Augustemak de Lima
Edio Luiz Petroski
Publikationsdatum
04.09.2018
Verlag
Springer Berlin Heidelberg
Erschienen in
European Journal of Pediatrics / Ausgabe 11/2018
Print ISSN: 0340-6199
Elektronische ISSN: 1432-1076
DOI
https://doi.org/10.1007/s00431-018-3233-8

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