Presentation Type

Poster

Faculty Mentor’s Full Name

John Quindry

Faculty Mentor’s Department

Health and Human Performance

Abstract

Summers in the Rocky Mountain West are notorious for wildfires. By virtue of event frequency, inhalation of woodsmoke particulate matter (PM) may potentially impact cardiovascular health. While field based studies have provided some insights, well controlled lab studies that quantify cardiovascular function before and after smoke inhalation are the next step. In order to better understand the physiological effects, we examined autonomic-sensitive cardiovascular responses to exogenous particulate during exercise using lab simulated exposure to filtered woodsmoke (Western Larch dried to 15% water content). High heart rate variability (time difference between cardiac cycles in an ECG) and low pulse wave velocity (“PWV”, the speed at which a cardiac impulse is transmitted through arteries) are two metrics of cardiovascular autonomic control that are indicative of good health. Two exercise trials at 70% VO2max cycling for 45-minutes, with smoke (PM 2.5µm,“WS”at 250µg/m3) or without smoke (PM 2.5µm,“CON”at 0µg/m3) were performed with a randomized, cross-over design (n=5). WS and CON trials were separated by one week with significance occuring at p

Category

Health and Medical Science

Available for download on Wednesday, April 13, 2022

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Apr 17th, 3:00 PM Apr 17th, 4:00 PM

Cardiovascular Responses to Woodsmoke During Exercise

UC South Ballroom

Summers in the Rocky Mountain West are notorious for wildfires. By virtue of event frequency, inhalation of woodsmoke particulate matter (PM) may potentially impact cardiovascular health. While field based studies have provided some insights, well controlled lab studies that quantify cardiovascular function before and after smoke inhalation are the next step. In order to better understand the physiological effects, we examined autonomic-sensitive cardiovascular responses to exogenous particulate during exercise using lab simulated exposure to filtered woodsmoke (Western Larch dried to 15% water content). High heart rate variability (time difference between cardiac cycles in an ECG) and low pulse wave velocity (“PWV”, the speed at which a cardiac impulse is transmitted through arteries) are two metrics of cardiovascular autonomic control that are indicative of good health. Two exercise trials at 70% VO2max cycling for 45-minutes, with smoke (PM 2.5µm,“WS”at 250µg/m3) or without smoke (PM 2.5µm,“CON”at 0µg/m3) were performed with a randomized, cross-over design (n=5). WS and CON trials were separated by one week with significance occuring at p