Associations between ultra-processed food consumption and duration of exercise with psychological symptoms in Chinese adolescents: a nationwide cross-sectional survey.

Overall, the prevalence of psychological symptoms showed a decreasing trend with the prolongation of the duration of exercise in adolescents, and the difference was statistically significant in comparison ( χ 2 value of 111.716, p < 0.001).

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Overall, the results showed that the prevalence of psychological symptoms among Chinese adolescents with UPF consumption of <3 times/week, 3–4 times/week, 5–6 times/week, and >6 times/week were 21.8, 20.0, 23.6, and 31.5%, respectively, showing an overall trend of increasing prevalence, and the difference was statistically significant ( χ 2 value of 53.166, p < 0.001).

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