Physical activity and academic achievement among Norwegian adolescents: Findings from a longitudinal study

Ingeborg Barth Vedøy; Knut Ragnvald Skulberg; Sigmund Alfred Anderssen; Hege Eikeland Tjomsland; Miranda Thurston

doi:10.1016/j.pmedr.2021.101312

Physical activity and academic achievement among Norwegian adolescents: Findings from a longitudinal study

Prev Med Rep. 2021 Jan 9:21:101312. doi: 10.1016/j.pmedr.2021.101312. eCollection 2021 Mar.

Authors

Ingeborg Barth Vedøy^{1

2}, Knut Ragnvald Skulberg¹, Sigmund Alfred Anderssen², Hege Eikeland Tjomsland¹, Miranda Thurston¹

Affiliations

¹ Inland Norway University of Applied Sciences, Postboks 400, 2418 Elverum, Norway.
² The Norwegian School of Sport Sciences, Postboks 4014 Ullevål stadion, 0806 Oslo, Norway.

Abstract

Regular physical activity (PA) has been associated with academic achievement, but the evidence is mainly based on cross-sectional research and self-reported measures of PA. The purpose of the current study was to explore the longitudinal relationship between objectively measured PA and academic achievement among a cohort of adolescents in Norway between 2016 and 2018. As a secondary aim, an indirect relationship via waist circumference (WC) and sleep duration was assessed. Data from 599 adolescents (54.4% female, mean age at baseline ± SD 13.3 ± 0.3 years) were collected annually during their three years at lower secondary school. PA was measured objectively using accelerometry. Academic achievement was assessed using grade point average (GPA) from school records. Linear regression analysis was performed to explore associations between longitudinal changes in measures of PA (Total PA and moderate-to-vigorous PA [MVPA]) and academic achievement directly or via mediators. Results showed no significant associations between Total PA or MVPA and academic achievement, either in the main analyses or through mediation of WC and sleep duration. The results contribute to a growing evidence base of studies showing no association between objectively measured PA and academic achievement among adolescents.

Keywords: Academic performance; Accelerometry; Adolescence; Body composition; Sleep.