Journal of Food, Agriculture and Environment

Morning exercise and PM2.5/PM10

Author(s):

Yuhong Zhao ¹, Yang Zhao ^{2 *}, Zhihua Tu ², Xinxiao Yu ^{2 *}

Recieved Date: 2013-09-02, Accepted Date: 2014-01-10

Abstract:

Morning exercise in the park is getting increasingly popular in Beijing, while Beijing’s Particulate Matter (PM) is getting worse. Studies indicated that the growing density of PM2.5 is positively correlated with the number of patients with circulatory system, respiratory and cardiovascular problems. To make people reduce the chance of exposure to PM2.5 as far as possible in the exercise and determine the most appropriate time and place for exercise, PM10 and PM2.5 were monitored in four sampling sites (broad-leaved forests, coniferous woodland, flower meadow and impervious surface) in December 2012 and May 2013 in Beijing Olympic forest park. And we selected four precipitation-free sunny days every month and monitoring occurred at least 48 h after precipitation. The concentrations of PM2.5, PM10 at the four different monitoring sites were also comparatively analyzed. Results indicated that the concentrations of PM10 and PM2.5 were both higher in heating period (December) than those in non-heating period (May) (p<0.05). In addition, the mean hourly concentrations of PM10 and PM2.5 in early morning and after 5:00 am were significantly higher than those in daytime (9:00 am-15:00 pm) (p<0.05), with the four different sites exhibiting the same hourly variation. Combined the study result, we argue that the traditional view that park, especially in the woods, is the best place to exercise in the morning should be corrected. 9:00 am to 15:00 pm is the best time for exercise, for the reason of low concentration of PM. Coniferous woodland and flower meadow are the best choice to morning exercise in non-heating period, while only impervious surface is the best choice for winter morning exercises. The results will provide scientific support for correcting the current false understanding in the morning exercise.

Keywords:

PM2.5, PM10, morning exercise, misunderstanding, Beijing

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Journal: Journal of Food, Agriculture and Environment
Year: 2014
Volume: 12
Issue: 1
Category: Food and Health
Pages: 84-87

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