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  • Expression of Concern
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20 March 2026

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Expression of Concern: Liu et al. Optimization of a Sports Activity Development Model Using Artificial Intelligence Under New Curriculum Reform. Int. J. Environ. Res. Public Health 2021, 18, 9049

MDPI AG, St. Alban-Anlage 66, 4052 Basel, Switzerland
With this notice, the IJERPH Editorial Office alerts readers to concerns related to this article [1]. Following publication, concerns were raised regarding the reliability of certain references within the article, which may affect the scientific integrity of its content. In order to maintain the highest scientific standards, the Editorial Board and Editor-in-Chief have decided to issue this expression of concern while an investigation is ongoing.
The authors of this publication have been contacted for further clarification, but did not respond.
Once this process has been completed, the Editorial Office will provide an update on the situation and announce any post-publication modifications deemed necessary, as per MDPI’s Update to Published Papers policy (https://www.mdpi.com/ethics#_bookmark30).

Reference

  1. Liu, T.; Wilczyńska, D.; Lipowski, M.; Zhao, Z. Optimization of a Sports Activity Development Model Using Artificial Intelligence under New Curriculum Reform. Int. J. Environ. Res. Public Health 2021, 18, 9049. [Google Scholar] [CrossRef] [Scilit] [PubMed]
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