Use of green spaces and blood glucose in children; a population-based CASPIAN-V study
Use of green spaces and blood glucose in children; a population-based CASPIAN-V study
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DOI：
10.1016/j.envpol.2018.09.094
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发表时间：
2018-12-01
影响因子：
8.9
通讯作者：
Kelishadi, Roya
中科院分区：
文献类型：
--
作者：
Dadvand, Payam;Poursafa, Parinaz;Kelishadi, Roya
有限但不断涌现的证据表明，接触绿色空间与成人血糖稳态之间存在有益关联；然而，针对儿童的此类证据却很少。我们对 3844 名 7-18 岁伊朗学童进行基于人群的多中心样本评估（2015 年），评估了在绿色空间度过的时间与空腹血糖 (FBG) 水平和空腹血糖受损（IFG、FBG >= 110 mg/dL）之间的关联。参与者被要求报告采访前 12 个月内每个季节和每种类型的绿地（公园、树林/其他自然绿地和私人花园/农田）每周在绿地中花费的平均小时数。我们开发了以中心为随机效应的线性和逻辑混合效应模型，以评估在绿色空间（每种类型单独以及所有类型一起）花费的时间分别与 FBG 和 IFG 的关联，并控制了广泛的协变量，包括社会经济地位的家庭指标。我们观察到在绿色空间（尤其是自然绿色空间）中花费的时间与光纤光栅水平之间呈负相关。具体来说，在绿色空间中花费的总时间增加 1.83 小时与 FBG 水平的 -0.5 mg/dl（95% 置信区间：-0.9，-0.1）变化相关。我们还观察到，与花在绿色空间的时间相关的 IFG 风险降低；然而，这种关联仅对于在自然绿色空间中度过的时间具有统计显着性。有人建议加强城市地区居民和社会经济地位较低群体的协会；然而，社会经济地位和城市化的相互作用项在统计上并不显着。需要进一步的纵向研究来在具有不同气候和人群易感性的其他环境中复制我们的发现。 (C) 2018 Elsevier Ltd. 保留所有权利。
A limited but emerging body of evidence is suggestive for a beneficial association between contact with green spaces and glucose homeostasis in adults; however, such an evidence for children is scarce. We evaluated the association between time spent in green spaces and fasting blood glucose (FBG) levels and impaired fasting glucose (IFG, FBG >= 110 mg/dL) in a population-based multicentric sample of 3844 Iranian schoolchildren aged 7-18 years (2015). Participants were instructed to report the average hours per week spent in green spaces separately during each season and in each type of green space (parks, woods/other natural green spaces, and private gardens/agricultural field) for a 12-month period preceding the interview. We developed linear and logistic mixed effects models with centre as random effect to evaluate the association of time spent in green spaces (separately for each type as well as all types together) with FBG and IFG, respectively, controlled for a wide range of covariates including household indicators of socioeconomic status. We observed inverse associations between time spent in green spaces, especially in natural green spaces, and FBG levels. Specifically, 1.83 h increase in the total time spent in green spaces was associated with -0.5 mg/dl (95% confidence intervals: -0.9, -0.1) change in FBG levels. We also observed reduced risk of IFG associated with time spent in green spaces; however, the association was statistically significant only for the time spent in natural green spaces. There were suggestions for stronger associations for those residing in urban areas and those from lower socioeconomic status groups; however, the interaction terms for socioeconomic status and urbanity were not statistically significant. Further longitudinal studies are required to replicate our findings in other settings with different climates and population susceptibilities. (C) 2018 Elsevier Ltd. All rights reserved.