在青少年时期坚持24小时活动周期和全脑体积方法:一个横截面研究 - 认知行动项目
Carlos Cristi-Montero1, Javier Sanchez-Martinez2, Juan Pablo Espinoza-Puelles1
1IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile.
Brain and cognition
|March 1, 2025
概括
青少年的屏幕时间坚持表明拉丁美洲青年大脑体积下降的趋势. 身体活动和睡眠等日常习惯与大脑发育有复杂的联系,与高收入国家的研究结果不同.
科学领域:
- 神经科学是一个神经科学.
- 发展心理学 发展心理学
- 公共卫生 公共卫生
背景情况:
- 遵守世卫组织24小时运动指南与健康有关,但它对大脑形态学的影响还未得到充分研究,特别是在拉丁美洲的青少年中.
- 了解这些关系对于针对青少年福祉的公共卫生倡议至关重要.
研究的目的:
- 调查智利青少年遵守运动指南 (身体活动,睡眠,屏幕时间) 与大脑形态之间的关联.
- 与高收入国家发现相比,探索这些协会的潜在差异.
主要方法:
- 在58名智利青少年的横截面研究中,使用结构性MRI分析大脑体积 (灰质,皮层,皮下,海马,杏仁体).
- 通过加速度计评估中度至强度的体力活动 (MVPA) 和睡眠;自报的屏幕时间.
- 使用FDR校正的线性回归模型探索了遵循指南和大脑体积之间的关联.
主要成果:
- 很少有青少年符合睡眠 (12%) 或MVPA (27%的样本特定,0%的国际) 准则;55%符合屏幕时间准则.
- 只有9%的人符合睡眠和屏幕时间的指导方针;没有参与者符合这三个指导方针.
- 屏幕时间准则的遵守显示出趋势水平的关联与较低的总灰质,皮质,皮质下,海马和杏仁体体积 (FDR p < 0.100).
结论:
- 青少年的日常习惯 (屏幕时间,体力活动,睡眠) 与大脑发育有复杂的关系,可能与预期的模式分歧.
- 研究结果表明,这些行为与大脑发育之间的联系在拉丁美洲青少年与高收入国家的青少年相比可能有所不同.
- 为了阐明这些关系,需要在不同的社会经济和文化背景下进行进一步的研究.
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