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Background: We aimed to identify long-term patterns of sport participation (overall, team, and individual sport) from childhood into adolescence, and to examine the association between these patterns and academic outcomes. Methods: This cohort study used data from the Longitudinal Study of Australian Children in wave 3 (4–5 y) to wave 9 (20–21 y). The participants were a nationally representative sample of 4241 children. We conducted latent class analyses to identify sport participation trajectories and assessed the association between these trajectories and academic outcomes. Results: Continued sport participation was associated with lower odds of being absent from school (OR = 0.44; 95% confidence intervals [CIs], 0.26 to 0.74), better performance on attention (B = −0.010; 95% CIs, −0.019 to −0.002) and working memory (B = −0.013; 95% CIs, −0.023 to −0.003), higher numeracy (B = 20.21; 95% CIs, 14.56 to 25.86) and literacy scores (B = 9.42; 95% CIs, 2.82 to 16.02), higher end of school academic performance (B = 3.28; 95% CIs, 1.47 to 5.09), and higher odds of studying at university (OR = 1.78; 95% CIs, 1.32 to 2.40). Team sport participation was associated with reduced absenteeism, better performance on attention and working memory, and being awarded the Higher School Certificate. Whereas individual sport participation was associated with higher literacy scores and end of school academic performance. Conclusions: Team and individual sport participation both benefit academic outcomes, but differently. Given the decline in sport participation during adolescence, these findings highlight the need to develop educational policies to establish an environment that promotes sport participation, which in turn could improve academic outcomes. [ABSTRACT FROM AUTHOR]

Background Cross-sectional studies show associations between loneliness, social isolation and physical inactivity. Cohort studies are shedding light on these relationships and further longitudinal investigations are needed. Purpose This study aimed to assess the longitudinal and bidirectional associations between loneliness, social isolation, and physical inactivity. Methods Data were drawn from five annual waves of the Household and Labour Dynamics of Australia Survey (2015–2019), providing a sample of 17,303 persons (mean age = 46.3 years [ SD = 18.0], 49.4% female). Relationships between loneliness, social isolation, and physical inactivity were examined using cross-lagged panel modeling, with estimation of simultaneous cross-lagged effects across each wave. Models adjusted for sociodemographic factors, chronic disease status, psychological distress, and mutually for social isolation or loneliness. Moderation of associations by sex was explored. Results There were modest lagged effects of physical inactivity on loneliness across the survey waves (odds ratio 1.16 [95% confidence interval 1.04–1.29] to 1.20 [1.07, 1.33]). A lagged effect of physical inactivity upon social isolation was only present across three of the waves (odds ratio 1.20 [1.02–1.41] to 1.23 [1.05–1.42]). While loneliness and social isolation showed lagged effects upon physical inactivity, these did not persist with adjustment for psychological distress. Conclusions Longitudinal analysis found that physical inactivity consistently predicted loneliness, but not social isolation. After adjustment for confounding, loneliness and social isolation were not predictive of physical inactivity. While the strength of the associations was modest, further investigation is warranted of the type and dose of physical activity that is most beneficial for reducing loneliness. [ABSTRACT FROM AUTHOR]