title: Exercise performance while wearing a tight-fitting powered air purifying respirator with limited flow.
abstract: Sixteen subjects exercised at 80-85% of maximal aerobic capacity on a treadmill while wearing a tight-fitting, FRM40-Turbo Powered Air Purifying Respirator (PAPR). The PAPR was powered by a DC power supply to give flow rates of 0%, 30%, 66%, 94%, and 100% of rated maximum blower capacity of 110 L/min. As flow rate was reduced, so was performance time. There was a 20% reduction in performance time as blower flow changed from 100% to 0% of maximum. Significant differences in breathing apparatus comfort and facial thermal comfort were found as flow rate varied. It was concluded that inadequate blower flow rate decreases performance time, facial cooling, and respirator comfort.
authors: Biological Resources Engineering, University of Maryland, College Park, MD 20742, USA. aj16@umail.umd.edu
authors: Arthur T
authors: AT
authors: Johnson
authors: Kathryn R
authors: KR
authors: Mackey
authors: William H
authors: WH
authors: Scott
authors: Frank C
authors: FC
authors: Koh
authors: Ken Y H
authors: KY
authors: Chiou
authors: Stephanie J
authors: SJ
authors: Phelps
mesh_terms: D000293:Adolescent; D000328:Adult; D001833:Body Temperature Regulation; D004867:Equipment Design; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test; D005260:Female; D006801:Humans; D008297:Male; D010807:Physical Endurance; D012134:Respiratory Protective Devices; D013696:Temperature