Abstract The physical fitness level of Chinese adolescents shows a decreasing trend year by year, which hurts adolescents’ physical health and future achievements.
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The association between weight-adjusted waist index and physical fitness index among Chinese adolescents.
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The sentences
Further, the results of the curve regression analysis showed that with the gradual increase of WWI, the PFI showed a trend of first increasing and then decreasing, a result that is consistent with the findings of the relevant study.