Objective measurement of the evolution of the distribution of physical activity in social times during lockdown against COVID-19: a longitudinal follow-up of French adolescents - Archive ouverte HAL Accéder directement au contenu
Poster De Conférence Année : 2021

Objective measurement of the evolution of the distribution of physical activity in social times during lockdown against COVID-19: a longitudinal follow-up of French adolescents

Résumé

Introduction The health crisis and resulting lockdowns are life events which disrupt physical activity (PA) lifestyles for adolescents (Gropper, 2020), a population whose PA levels are already problematic (Allender, 2008). Whilst no other studies have used objective measurements to quantify the loss of PA in youth following lockdowns (Lopez-Valenciano et al., 2021), this study seeks to examine how the lockdown impacted PA according to different social times throughout the day, using accelerometry. Methods 43 French adolescents (age: 17±1.1 y.o.) participated in a longitudinal study, which took place one week before lockdown (October 2020), and during the second week of lockdown (November 2020) using ActiGraph GT3X accelerometers. Respectively following the algorithms of Troiano (2007) and Freedson (1998), we determined the wearing periods and the PA cut points. At the same time, these adolescents completed a daily digital diary to reconstruct the ten daily social times: transport, home, school, physical education lesson, unsupervised leisure, supervised leisure, household chores, job, meals and rest (Klinker et al., 2014), which were synchronized with the accelerometric data. Results Firstly, the overall PA decreases significantly due to the reorganization of social times associated with PA: transport, physical education, supervised leisure. Secondly, we show a significant increase of unsupervised leisure. However, the latter is not able to compensate for the loss of the aforementioned social times. Finally, the loss in PA is correlated with the initial PA profile of the students. Discussion We show that lockdown has reorganized the entire distribution of PA across social times, shifting the peak of physical activity from supervised leisure and PE to unsupervised leisure. Based on a temporal division we highlight which population has had its PA the most impacted and, more importantly, which social times are to be targeted in order to reduce this loss of PA.

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Education
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Dates et versions

hal-04194326 , version 1 (02-09-2023)

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  • HAL Id : hal-04194326 , version 1

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Thibaut Derigny, François Potdevin, Georges Baquet, Joseph Gandrieau, Christophe Schnitzler. Objective measurement of the evolution of the distribution of physical activity in social times during lockdown against COVID-19: a longitudinal follow-up of French adolescents. International Conference on Ambulatory Monitoring of Physical Activity and Movement, Jun 2021, Virtual, United States. Journal for the Measurement of Physical Behaviour, 2021. ⟨hal-04194326⟩
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