XU, Jie. Expression of Concern: Analysis and Improvement of the Application of Playground Sports Posture Detection Technology in Physical Education Teaching and Training. EAI Endorsed Transactions on Pervasive Health and Technology, [S. l.], v. 11, 2026. DOI: 10.4108/eetpht.11.12769. Disponível em: https://publications.eai.eu/index.php/phat/article/view/12769. Acesso em: 24 apr. 2026.