{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,26]],"date-time":"2026-10-26T23:24:39Z","timestamp":1793057079055,"version":"4.5.0"},"reference-count":63,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2024,8,7]],"date-time":"2024-08-07T00:00:00Z","timestamp":1722988800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Public Health"],"abstract":"<jats:sec>\n                    <jats:title>Objective<\/jats:title>\n                    <jats:p>Experienced 3\u2009years of pandemic-induced home life, in the post-epidemic period, preschoolers in China are falling short of the World Health Organization\u2019s standards for screen time and outdoor activities. This notably impacts their physical well-being. The study aims to probe the associations between screen time, outdoor activities, and the physical health of preschoolers, offering insights to shape interventions targeting myopia and obesity prevention in children.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A cross-sectional study was conducted in Guangdong Province, involving a representative sample of 23,992 preschoolers and their caregivers recruited through proportional stratified cluster sampling. Data collection utilized the Chinese Early Human Capability Index (CHeHCI, eHCi), a questionnaire on children\u2019s media use in daily family life, and Body Mass Index (BMI). Linear regression and binary logistic regression models were employed to analyze the impact of screen time and outdoor activity duration on the physical health of preschoolers.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>In the high family socioeconomic status (SES) group, children had significantly less screen time compared to those in the medium and low SES groups. Outdoor activity time varied significantly based on SES, with higher SES linked to extended outdoor engagement. Additionally, children\u2019s eHCi health dimension score exhibited significant SES-related differences, showcasing higher scores for children in higher SES groups. In terms of gender differences, boys dedicated significantly more time to outdoor activities than girls, yet boys had a notably higher overweight rate. Furthermore, girls demonstrated better health outcomes based on eHCi health scores. A significant association emerged between overweight and screen time in children with high SES, indicating that prolonged screen time was linked to a higher likelihood of overweight based on BMI. Additionally, a substantial negative correlation was observed between children\u2019s eHCi health dimension score and screen time. Furthermore, children\u2019s outdoor activity time exhibited a significant positive correlation with eHCi health dimension score. Regression analysis revealed that screen time could significantly negatively predict children\u2019s physical health score, while outdoor activity time could significantly positively predict children\u2019s eHCi physical health score.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The current study highlights that family SES, age, and gender play pivotal roles in influencing preschoolers\u2019 screen time and outdoor activity duration, with family SES being particularly influential. Higher family SES correlates with reduced screen time, increased outdoor activity, and elevated health levels among children. Importantly, children\u2019s screen time negatively predicts their health status, while outdoor time positively predicts their health status.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fpubh.2024.1434936","type":"journal-article","created":{"date-parts":[[2024,8,7]],"date-time":"2024-08-07T10:28:09Z","timestamp":1723026489000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":22,"title":["Effects of outdoor activity time, screen time, and family socioeconomic status on physical health of preschool children"],"prefix":"10.3389","volume":"12","author":[{"given":"Bobo","family":"Zong","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lun","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yufang","family":"Cui","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Wenxia","family":"Shi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2024,8,7]]},"reference":[{"key":"ref1","doi-asserted-by":"publisher","first-page":"9","DOI":"10.1016\/j.ajo.2013.08.010","article-title":"Epidemiology and disease burden of pathologic myopia and myopic choroidal neovascularization: an evidence-based systematic review","volume":"157","author":"Wong","year":"2014","journal-title":"Am J Ophthalmol"},{"key":"ref2","doi-asserted-by":"publisher","first-page":"1435","DOI":"10.1186\/s12889-023-16270-x","article-title":"A cluster randomized trial of a comprehensive intervention nesting family and clinic into school centered implementation to reduce myopia and obesity among children and adolescents in Beijing, China: study protocol","volume":"23","author":"Wang","year":"2023","journal-title":"BMC Public Health"},{"key":"ref3","doi-asserted-by":"publisher","first-page":"52","DOI":"10.1038\/nutd.2016.52","article-title":"Overweight and obesity in Mexican children and adolescents during the last 25 years","volume":"7","author":"Hern\u00e1ndez-Cordero","year":"2017","journal-title":"Nutr Diabet"},{"key":"ref4","doi-asserted-by":"publisher","first-page":"6","DOI":"10.1167\/iovs.62.5.6","article-title":"IMI prevention of myopia and its progression","volume":"62","author":"Jonas","year":"2021","journal-title":"Invest Ophthalmol Vis Sci"},{"key":"ref5","doi-asserted-by":"publisher","first-page":"176","DOI":"10.3390\/ijerph18010176","article-title":"Sociodemographic predictors of changes in physical activity, screen time, and sleep among toddlers and preschoolers in Chile during the COVID-19 pandemic","volume":"18","author":"Aguilar-Farias","year":"2021","journal-title":"Int J Environ Res Public Health"},{"key":"ref6","doi-asserted-by":"publisher","first-page":"966","DOI":"10.1177\/0013916518806686","article-title":"Outdoor time, screen time, and connection to nature: troubling trends among rural youth?","volume":"51","author":"Larson","year":"2019","journal-title":"Environ Behav"},{"key":"ref7","doi-asserted-by":"publisher","first-page":"98","DOI":"10.16470\/j.csst.2021013","article-title":"Effects of RCT interventions on sedentary behavior and Screentime in children and adolescents aged 2 to 18 based on smartphone technology: meta-analysis","volume":"58","author":"He","year":"2022","journal-title":"Chin Sport Sci Technol"},{"key":"ref8","doi-asserted-by":"publisher","first-page":"744","DOI":"10.1111\/cch.12701","article-title":"Screen time and childhood overweight\/obesity: a systematic review and meta-analysis","volume":"45","author":"Fang","year":"2019","journal-title":"Child Care Health Dev"},{"key":"ref9","doi-asserted-by":"publisher","first-page":"96","DOI":"10.3969\/j.issn.2095-4301.2021.02.004","article-title":"Correlations among screen time, outdoor activity time, and physical health of preschoolers","volume":"9","author":"Li","year":"2021","journal-title":"J Bio-Educ"},{"key":"ref10","doi-asserted-by":"publisher","first-page":"161","DOI":"10.1186\/s12875-022-01761-4","article-title":"Screen time increases overweight and obesity risk among adolescents: a systematic review and dose-response meta-analysis","volume":"23","author":"Haghjoo","year":"2022","journal-title":"BMC Prim Care"},{"key":"ref11","doi-asserted-by":"publisher","first-page":"17","DOI":"10.1186\/s12889-017-4854-y","article-title":"Proportion of preschool-aged children meeting the Canadian 24Hour movement guidelines and associations with adiposity: results from the Canadian health measures survey. 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