Study on the stress response of young passengers in different subway passenger densities
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ORIGINAL ARTICLE
Study on the stress response of young passengers in different subway passenger densities Xiaofei Lin1
•
Shouxin Song2 • Pengfei Yu3 • Pengwei Yuan4
Received: 17 October 2019 / Revised: 28 February 2020 Ó The Society for Reliability Engineering, Quality and Operations Management (SREQOM), India and The Division of Operation and Maintenance, Lulea University of Technology, Sweden 2020
Abstract In this study, we set up a virtual subway car and analyzed the stress response of young passengers in different compartments. A total of 10 volunteers participated in the experimental study. We measured their diastolic blood pressures, systolic blood pressures, and heart rates, from a car density of one person per square meter to a density of 10 persons per square meter, using 37° sport wristbands. The results show that the participants’ mean, minimum, and maximum heart rates were within the normal range, but the ratio of their mean to their maximum heart rate was 73.69%, a level that would have an impact on human health. Their mean, minimum, and maximum diastolic blood pressures and systolic blood pressures were within the normal range. Passenger density had no significant effect on diastolic blood pressure, systolic blood pressure, or heart rate (p \ 0.05). Diastolic and systolic blood pressures were significantly positively correlated, whereas diastolic blood pressure and heart rate, and systolic blood pressure and heart rate, were negatively correlated, although not significantly. For the sake of comfort, we recommend five persons per square meter as the critical value of congestion.
& Xiaofei Lin [email protected] 1
Civil Engineering and Agriculture School, Anhui University of Technology, Ma’anshan 243032, China
2
School of Economics and Management, Beijing Jiaotong University, Beijing 100044, China
3
College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
4
Business School, University of Jinan, Jinan 250022, China
Keywords Subway Passenger density Stress Heart rate Blood pressure Abbreviations ANOVA Analysis of variance BP Blood pressure SP Systolic blood pressure DP Diastolic blood pressure HR Heart rate SD Standard deviation bpm Beats per minute
1 Introduction Due to their relatively closed building structure, subway cars differ from train carriages in that they do not have the same inherent microenvironmental disadvantages for passengers, such as wind, heat, light, sound, and so on. At the same time, due to the large volume, speed, convenience, and accuracy of subways, more and more cities and people are choosing the subway for their public transport needs, and that trend has led to subways being very crowded. Although crowded car environments do not directly cause increasing concentrations of air particulate matter (Park et al. 2012), they can reduce the air quality and negatively change the per capita physical and mental environment, thereby affecting the health of passengers through, for example, infectious diseases. They also can dec
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