Air Pollution and Activity During Transportation by Car, Subway, and Walking
Air Pollution and Activity During Transportation by Car, Subway, and Walking
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DOI：
10.1016/j.amepre.2009.03.014
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发表时间：
2009-07-01
影响因子：
5.5
通讯作者：
Markowitz, Steven B.
中科院分区：
文献类型：
--
作者：
Morabia, Alfredo;Amstislavski, Philippe N.;Markowitz, Steven B.
背景：很少有证据表明使用公共汽车和地铁而不是汽车对健康的危害和益处。本研究的目的是评估个人暴露于2.5微米或更小颗粒物的程度和方差（PM（2.5））和伴随的体力活动能量消耗（PAEE），用于汽车、地铁或步行的交通。来自纽约市的20名不吸烟的志愿者在3个不同的日子里通过汽车、地铁和步行在预定的路线上旅行长达8小时，在2007年10月到2008年2月之间。他们配备了一个带有PM（2.5）气溶胶入口的个人监测器和一个GPS接收器，完成了每条路线的详细体力活动日记。代谢当量（MET）和PAEE率（千卡/分钟）计算从GPS衍生的活动持续时间和速度，活动特异性MET，和测量的体重。（2.5）汽车、地铁和步行臂之间的暴露没有差异（分别为21.4、30.6和26.5 μ g/m3.min，p=0.19）;但平均MET值（分别为1.51、2.03和2.60 Kcal/kg.hr，p
Background: Little evidence exists about the health risks and benefits associated with using public buses and subways rather than cars. The objective of the current study was to assess the magnitude and variance of personal exposure to particulate matter 2.5 microns or smaller (PM(2.5)) and concomitant physical activity energy expenditure (PAEE) for transportation by car, subway, or walking.Methods: Twenty nonsmoking volunteers from New York City traveled on predetermined routes by car, subway, and walking, for up to 8 hours on 3 different days, between October 2007 and February 2008. Outfitted with a personal monitor with PM(2.5) aerosol inlet, and a GPS receiver, they completed a detailed physical activity diary for each route. Both metabolic equivalent (MET) and PAEE rates (Kcal/min) were computed from GPS-derived activity durations and speeds, activity-specific METs, and measured body weight.Results: Total PM(2.5) exposures did not differ among car, subway, and walking arms (respectively, 21.4, 30.6, and 26.5 mu g/m(3).min, p=0.19); but average MET values (respectively, 1.51, 2.03, and 2.60 Kcal/kg.hr, p