Department of Physical Education, China University of Geosciences (Beijing), Beijing, China,
Department of Physical Education, China University of Geosciences (Beijing), Beijing, China.
Obes Facts. 2022;15(4):463-472. doi: 10.1159/000524857. Epub 2022 May 11.
This study systematically reviewed scientific evidence concerning the influence of green space on obesity in China.
Keyword and reference search was conducted in PubMed, Web of Science, Scopus, EBSCO, and CNKI. Predetermined selection criteria included study designs: experimental and observational studies; subjects: people of all ages; exposures: green space (i.e., any open land partly or entirely covered with grass, trees, shrubs, or other vegetation); outcomes: body weight status (e.g., body mass index [BMI], overweight, or obesity); and country: China.
Ten studies met the selection criteria and were included in the review. All studies adopted a cross-sectional design. Overall greenness measures were found to be inversely associated with BMI, overweight, and obesity in most included studies. Street greenness, which measures the perceived greenness at the eye level on streets, was found to be inversely associated with BMI and obesity. By contrast, mixed results were observed for the relationship between green space accessibility and weight outcomes. Air quality was found to mediate the relationship between greenness and obesity. The influence of green space on obesity tended to vary by residents' gender, age, and socioeconomic status. Boys, women, older residents, and those with lower education or household income were more likely to benefit from greenness exposure.
The literature on green space exposure in relation to obesity in China remains limited. Longitudinal and quasi-experimental studies are warranted to assess the causal link between green space and obesity. Future measures should better capture the self-perception, quality, and attractiveness of green space. The underlying pathways through which green space affects residents' weight outcomes should be further elucidated.
本研究系统回顾了有关中国绿色空间对肥胖影响的科学证据。
在 PubMed、Web of Science、Scopus、EBSCO 和中国知网（CNKI）中进行了关键词和参考文献检索。预定的选择标准包括研究设计：实验和观察研究；对象：所有年龄段的人；暴露：绿色空间（即部分或全部覆盖草、树、灌木或其他植被的任何开放土地）；结果：体重状况（例如，体重指数[BMI]、超重或肥胖）；以及国家：中国。
符合选择标准并纳入综述的研究有 10 项。所有研究均采用横断面设计。大多数纳入的研究发现，整体绿化程度与 BMI、超重和肥胖呈负相关。街道绿化是指在街道上观察到的感知绿化程度，与 BMI 和肥胖呈负相关。相比之下，绿地可达性与体重结果之间的关系则观察到混合结果。空气质量被发现调节了绿化与肥胖之间的关系。绿色空间对肥胖的影响似乎因居民的性别、年龄和社会经济地位而异。男孩、女性、老年居民以及受教育程度或家庭收入较低的居民更有可能受益于绿化。
关于中国绿色空间暴露与肥胖之间关系的文献仍然有限。需要进行纵向和准实验研究来评估绿色空间与肥胖之间的因果关系。未来的措施应更好地捕捉对绿色空间的自我感知、质量和吸引力。应进一步阐明绿色空间影响居民体重结果的潜在途径。
