Volume 42 Issue 11
Nov.  2021
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MA Tao, HUO Jiakang, WU Lijuan, LI Weiming, LIU Xiangtong, WEN Bo, CHEN Li, DONG Yanhui, GUO Xiuhua, MA Jun. Effect modification of overweight and obesity on the relationship between short-term PM2.5 exposure and vital capacity in children and adolescents[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2021, 42(11): 1740-1743. doi: 10.16835/j.cnki.1000-9817.2021.11.032
Citation: MA Tao, HUO Jiakang, WU Lijuan, LI Weiming, LIU Xiangtong, WEN Bo, CHEN Li, DONG Yanhui, GUO Xiuhua, MA Jun. Effect modification of overweight and obesity on the relationship between short-term PM2.5 exposure and vital capacity in children and adolescents[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2021, 42(11): 1740-1743. doi: 10.16835/j.cnki.1000-9817.2021.11.032

Effect modification of overweight and obesity on the relationship between short-term PM2.5 exposure and vital capacity in children and adolescents

doi: 10.16835/j.cnki.1000-9817.2021.11.032
  • Received Date: 2021-03-30
  • Rev Recd Date: 2021-08-01
  • Available Online: 2021-12-01
  • Publish Date: 2021-11-25
  •   Objective  To analyze the relationship between short-term exposure of PM2.5 and the vital capacity of children and adolescents and the modification effect of overweight and obesity, and to provide a scientific reference for appropriate outdoor activities and strengthening prevention of air pollution.  Methods  A total of 1 036 273 students who qualified in the annual health examination data of primary and secondary school students in a city from 2017 to 2018 were selected; the meteorological factors and air quality of the study area were obtained by inverse distance weighted interpolation method; the generalized linear mixed model was used to estimate the individual lag effect and average lag effect of PM2.5 short-term exposure on lung capacity with in 7 days, and to analyze the modification effect of overweight and obesity on the relationship between short-term PM2.5 exposure and vital capacity in children and adolescents.  Results  From September 1, 2017 to June 30, 2018, the average PM2.5 concentration in this city was 66.36 μg/m3, the detection rate of overweight and obesity was 33.38%, and the average lung capacity was (2 286.72±956.77)mL. The single lag effect of PM2.5 on vital capacity was the biggest when lag6, the average daily PM2.5 concentration increased by 10 μg/m3 and the decrease of vital capacity of children and adolescents by 2.81(95%CI=2.60-3.03)mL. The average lag effect of PM2.5 on lung capacity was the largest when lag07, the average concentration of PM2.5 sliding was significantly correlated with the decrease of lung capacity of children and adolescents by 5.82(95%CI=5.37-6.27)mL every 10 μg/m3 increase. The prevalence of PM2.5 short-term exposure to pulmonary capacity decreased in overweight and obese children and adolescents was higher (P < 0.01).  Conclusion  The short-term exposure of PM2.5 has a significant negative correlation with the lung capacity of children and adolescents, and there is a lag effect. The decrease of the vital capacity of overweight and obese children and adolescents after PM2.5 short-term exposure is more significant.
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