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E xcessive physical activity (PA) has been linked to increased risk for disordered eating behaviours and eating disorders.This study investigates the relationship between PA and disordered eating behaviours and attitudes (DEBAs) among Jamaican adolescents. This cross-sectional study included 521 adolescents, 12-19 years. Anthropometric measurements were collected, and adolescents completed questionnaires on disordered eating behaviours (EAT-26), physical activity, self-esteem and affect. Associations were assessed using sex-specific mixed-effect linear and logistic regression models. Participants reported exercising an average of 3 days per week. Adolescents who exercised for a longer duration had greater odds of having elevated EAT-26 scores (at least 1 hour-OR = 2.04; 95% CI = 1.03, 4.06; p = .042), while a higher exercise frequency among males (3-5 days per week) was protective against DEBAs (OR 0.38; 95% CI = 0.16, 0.88; p = .025). Female adolescents reported higher prevalence of elevated EAT-26 scores than males (p < .01). Increased negative affect increased odds of an elevated EAT-26 score. Exercise duration and frequency play a role in disordered eating behaviours in Jamaican adolescents and vary by gender. Our findings have implications for weight management interventions and policies, encouraging healthcare providers to monitor PA levels as well as negative affect in adolescents who display disordered eating behaviours.

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The prevalence of problematic Internet use (PIU) and its associated negative outcomes among college students has been heavily researched in developed countries. However, despite the increased accessibility of the Internet and indicators which may suggest PIU in developing countries such as Jamaica, PIU in this context remains grossly understudied. This study surveyed 277 Jamaican university students and found evidence of PIU, with younger respondents (ages 18–23) at risk. The findings also indicate that the predictors of PIU in this sample are depressive symptomatology, avoidant-attachment, and low social connectedness ( R 2 = .208, F [7, 269] = 10.112, p < .001). Findings from the current study highlight that problematic Internet use is of concern in this developing context and warrants further exploration.