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ORIGINAL RESEARCH article

Front. Med.
Sec. Ophthalmology
Volume 12 - 2025 | doi: 10.3389/fmed.2025.1523640
This article is part of the Research Topic Myopia in Childhood and Adolescence View all 5 articles

Adherence to the Canadian 24-Hour Movement Guidelines and Vision Impairment in Children and Adolescents: A Cross-Sectional Study

Provisionally accepted
Haoxi Zhong Haoxi Zhong Huimin Zhu Huimin Zhu Mingjie Jiang Mingjie Jiang Jingfeng Mu Jingfeng Mu *
  • Shenzhen Eye Hospital, Shenzhen, China

The final, formatted version of the article will be published soon.

    This study investigates the associations between adherence to the Canadian 24-hour movement guidelines-covering physical activity (PA), screen time (ST), and sleep duration (SD)-and vision impairment, specifically myopia and anisometropia, among children and adolescents in Shenzhen, China.A cross-sectional study was conducted in 2022 with 4,649 participants. Adherence to the guidelines was assessed using self-reported PA, ST, and SD measures, while vision impairment was clinically assessed.Logistic regression models were used to analyze the associations, adjusting for sociodemographic factors.Among participants, 48.63% were diagnosed with myopia and 11.01% had myopic anisometropia.Meeting the ST guideline was associated with a reduced risk of myopia (aOR = 0.86, 95% CI = 0.76-0.98) and myopic anisometropia (aOR = 0.78, 95% CI = 0.64-0.95). Meeting both PA and ST guidelines further reduced the odds of myopia (aOR = 0.73, 95% CI = 0.56-0.97) and myopic anisometropia (aOR = 0.60, 95% CI = 0.41-0.89). Meeting all three guidelines (PA, ST, and SD) significantly reduced the odds of myopia (aOR = 0.71, 95% CI: 0.53-0.93) and showed a trend toward reduced risk of anisometropia (aOR = 0.69, 95% CI: 0.47-1.02), compared to those who met none. Meeting two guidelines also significantly reduced the risk of myopia (aOR = 0.76, 95% CI: 0.59-0.97) and anisometropia (aOR = 0.71, 95% CI: 0.51-1.00).

    Keywords: physical activity, screen time, Sleep, Public Health, Myopia, Anisometropia, 24-hour movement, Children and adolescents

    Received: 06 Nov 2024; Accepted: 24 Jan 2025.

    Copyright: © 2025 Zhong, Zhu, Jiang and Mu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Jingfeng Mu, Shenzhen Eye Hospital, Shenzhen, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.