静坐行为模式与身体活动的替代和青少年心血管风险因素之间的关联:一项为期3年的纵向研究
Leonardo Alex Volpato1, Vinícius Muller Reis Weber2, Wendell Arthur Lopes3
1Laboratory of Physical Activity and Health, Center of Physical Education and Sports, State University of Londrina-UEL, Londrina, PR, Brazil.
通过中度至剧烈的体力活动 (MVPA) 取代久坐时间,改善了青少年男孩的心肺呼吸能力. 用MVPA替代较长时间的久坐状态,对心血管健康有更大的益处.
科学领域:
- 心血管健康 心血管健康
- 青少年健康 青少年健康
- 运动生理学 运动生理学
背景情况:
- 对于如何用身体活动取代久坐行为 (SB) 影响青少年心血管风险因素的理解有限.
- 需要对SB替代对青春期心血管健康的影响进行性别分层分析.
研究的目的:
- 调查替代性静坐行为 (SB) 和静坐期间与不同体力活动强度和心血管风险因素的纵向变化之间的联系.
- 进行性别分层分析,以了解SB替代的性别特异性影响.
主要方法:
- 与109名巴西青少年 (60名女孩,49名男孩) 进行前性队列研究,并进行了为期3.2年的随访.
- 测量心血管风险因素:BMI,腰围,心肺健康,以及综合心血管风险评分.
- 使用加速度计来测量久坐不动,轻度体力活动 (LPA) 和中度至强度体力活动 (MVPA).
- 采用多变量线性回归的异时代替代模型来分析用LPA和MVPA替代10分钟/天的静止病发作的影响.
主要成果:
- 用MVPA替代SB (短时间和长时间) 与男孩的心肺呼吸能力改善有关.
- 对于男孩的特定关联:用MVPA替代SB显示了对心肺健康的显著积极影响 (β系数从0.076到0.084).
- 对于用LPA替代药物,或对肥胖和心血管风险评分的影响,在任何性别中都没有发现显著的关联,在任何结果中也没有发现女孩.
结论:
- 通过中度到剧烈的体力活动 (MVPA) 取代久坐不动的行为,积极影响青少年男孩的心肺呼吸能力变化.
- 用MVPA替代较长时间的久坐状态似乎对青少年男孩的心肺健康产生了更大的益处.
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