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学校开始时间与青少年饮食摄入量之间的关联:来自全国研究的结果
Katherine M Kidwell1, Megan A Milligan1, Arleigh Perkins1
1Syracuse University, Syracuse, NY, USA.
概括
较早的上学时间与青少年不健康食品和含糖饮料的消费增加有关. 然而,在美国的一项全国性研究中,更早的开始时间也与更高的水果摄入量有关.
科学领域:
- 公共卫生 公共卫生
- 营养科学 营养科学
- 青少年健康 青少年健康
背景情况:
- 较早的学校开学时间与青少年健康状况的负面影响有关.
- 对学校开学时间和青少年饮食的研究是有限的.
- 这项研究调查了美国青少年上学开始时间和饮食摄入量之间的关系.
研究的目的:
- 评估美国青少年全国样本中学校开学时间和饮食摄入量之间的关联.
- 为了确定更早的学校开学时间是否预测了更高的能量密度,营养缺乏的食物摄入量.
- 为了检查更早的学校开学时间是否预测不太健康的食物摄入量.
主要方法:
- 利用了国家癌症研究所的家庭生活,活动,阳光,健康和饮食 (FLASHE) 研究的数据 (n=1371).
- 使用加权最小平方回归来分析学校开始时间作为饮食摄入量的预测指标.
- 在分析中控制了人口和社会经济因素.
主要成果:
- 早期开学时间的学校的青少年消耗了更多的能量密度高,营养缺乏的食物,主要是因为他们摄入了更多的含糖饮料和添加糖.
- 较早的学校开学时间出乎意料地与更大的整体水果摄入量有关.
- 后期分析显示,较早的开始时间预测了较高的水果杯摄入量,但不是蔬菜摄入量.
结论:
- 较早的上学时间与青少年不太健康的饮食模式有关,其特点是增加了含糖饮料和能量密度高,营养不良的食物的消费.
- 较早开学时间和增加水果摄入量之间的联系需要进一步调查.
- 未来的研究应该利用纵向设计和更详细的饮食评估来探索这些关联.
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