Liu Bo, Shi Peng, Jin Teng, Feng Xiaosu
School of Athletic Performance, Shanghai University of Sport, Shanghai, 200438, China.
School of Physical Education, Shanghai University of Sport, Shanghai, 200438, China.
Arch Public Health. 2025 Jan 10;83(1):10. doi: 10.1186/s13690-024-01493-0.
24-h movement behaviors have a close relationship with children and adolescents' cognition, gray matter volume, and academic performance. This systematic review aims to precisely explore the associations between meeting different combinations of guidelines and the aforementioned indicators, in order to better serve public health policy.
Computer retrieval was conducted on CNKI, Web of Science, PubMed, SPORT Discus and Cochrane library databases. The screening and data extraction processes were conducted by two researchers. This study used the Joanna Briggs Institute checklist for methodological quality assessment and the Grading of Recommendations Assessment, Development, and Evaluation system for the evaluation of the level of evidence. Descriptive statistical analysis is performed using frequency and percentage on the extracted data and key findings, primarily to assess the consistency of the positive benefits associated with meeting different guidelines and outcome variables.
A total of 10 studies were included (with 16 correlation analyses conducted), involving 51,566 children and adolescents aged between 4.2 and 15.9 years old. The included studies generally agreed upon the following associations: adherence to the screen time (ST) guidelines is positively linked to fluid intelligence; adherence to the sleep duration (SD) guidelines is positively linked to literacy; adherence to both ST and SD guidelines is associated with increased fluid intelligence and gray matter volume; and overall adherence to all guidelines is positively correlated with fluid intelligence. The included studies reported low certainty of evidence. Additionally, the included studies have provided clear evidence, but some studies did not strictly control confounding factors, and it is also unclear whether there is a larger effect size, hence the level of evidence is relatively low.
There are varying degrees of associations between different combinations of guidelines and cognition, gray matter volume, and academic performance, but further research is needed to confirm these findings, especially the relatively limited role of meeting physical activity guidelines.
24小时运动行为与儿童和青少年的认知、灰质体积及学业成绩密切相关。本系统评价旨在精确探究符合不同指南组合与上述指标之间的关联，以便更好地服务于公共卫生政策。
在知网、Web of Science、PubMed、SPORT Discus和Cochrane图书馆数据库进行计算机检索。筛选和数据提取过程由两名研究人员进行。本研究使用乔安娜·布里格斯研究所的方法学质量评估清单和推荐分级评估、制定与评价系统来评估证据水平。对提取的数据和关键发现进行频率和百分比的描述性统计分析，主要是评估符合不同指南与结果变量相关的积极益处的一致性。
共纳入10项研究（进行了16项相关性分析），涉及51566名年龄在4.2至15.9岁之间的儿童和青少年。纳入的研究普遍认同以下关联：遵守屏幕时间（ST）指南与流体智力呈正相关；遵守睡眠时间（SD）指南与读写能力呈正相关；同时遵守ST和SD指南与流体智力和灰质体积增加有关；总体遵守所有指南与流体智力呈正相关。纳入的研究报告证据确定性较低。此外，纳入的研究提供了明确的证据，但一些研究没有严格控制混杂因素，也不清楚是否存在更大的效应量，因此证据水平相对较低。
不同指南组合与认知、灰质体积和学业成绩之间存在不同程度的关联，但需要进一步研究来证实这些发现，尤其是符合身体活动指南的作用相对有限。
