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      "name": "Zhengyang Yang"
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      "name": "Lubo Zhai"
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    {
      "name": "Jin Yan",
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  "published": "2026-10-31",
  "publisher": "Springer Science and Business Media LLC",
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      "origin": "issn:1471-2458",
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  "title": "Changes in the frequency of vigorous physical activity across four survey cycles: analyses of 12-year repeated cross-sectional surveys of 729,201 adolescents",
  "title_text": "Changes in the frequency of vigorous physical activity across four survey cycles: analyses of 12-year repeated cross-sectional surveys of 729,201 adolescents",
  "type": "peer-reviewed",
  "updated_at": "2026-11-02T00:21:52Z",
  "url": "https://research.draconitic.com/paper/2ny6vn7tha8bw",
  "venue": "BMC Public Health",
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