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Abstract

This cross-sectional study examined the associations between sleep duration, physical activity, sport practice, perceived health indicators, and social media addiction among young adults. The analysis included 505 participants and used descriptive statistics, Spearman correlation analyses, and multivariable ordinary least squares regression models with higher-order polynomial terms. Descriptive results indicated moderate to high levels of social media addiction in the sample. Bivariate analyses revealed weak and nonsignificant correlations between addiction scores and both sleep duration and overall physical activity. Sport practice showed a small positive correlation with addiction scores that did not remain significant after adjustment for multiple testing. In contrast, lifestyle variables were strongly interrelated, particularly physical activity, sport practice, and gender, indicating significant behavioral heterogeneity. Multivariable models explained a small and statistically nonsignificant proportion of the variance in social media addiction (R² < 0.05). Sleep duration and sport practice did not emerge as significant predictors. Physical activity showed a non-linear association, with a higher-order term reaching statistical significance, indicating a complex relationship rather than a direct protective effect. Anthropometric variables showed limited influence, with height exhibiting a modest negative association with addiction scores. Overall, the findings suggest that sleep duration and physical activity are not strong independent correlates of social media addiction when modeled directly, supporting a multifactorial and non-linear interpretation in which lifestyle behaviors interact with psychological and contextual factors‎.

Keywords: Physical activity, Sleep, Social media addiction, Sport practice, Young adults

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