Delfino RJ, Quintana PJE, Floro J, Gastanaga VM, Samini BS, Kleinman MT, Liu L-JS, Bufalino C, Wu C-F, McLaren CE.
2004.
Association of FEV1 in Asthmatic Children with Personal and Microenvironmental Exposure to Airborne Particulate Matter.
Environmental Health Perspectives, 112 (8): pp. 932-941.
This paper describes a study of 19 asthmatic children ages 9-17 in Southern California who were followed for two weeks during either fall 1999 or spring 2000. Forced expiratory volume in one second (FEV1) was measured by subjects in the morning, afternoon, and evening. Environmental data collection included personal passive, continuous particle monitoring; indoor, outdoor, and central community site outdoor 24-hour average air concentrations of fine particles (PM2.5) and coarse particles (PM10); and, central community site outdoor air hourly average concentrations of PM10, nitrogen dioxide, and ozone. Among the results, the researchers reported the percent predicted FEV1 decreased with increased personal 24-hour average particle concentrations (exposures) the day before FEV1 was measured. Furthermore, this association was relatively stronger among boys allergic to other known indoor allergens.
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