CARDIOVASCULR AND BLOOD OXIDATIVE STRESS RESPONSES TO EXERCISE AND ACUTE WOODSMOKE EXPOSURE IN ACTIVE INDIVIDUALS
C. Williamson-Reisdorph, K. Tiemessen, K. Christison, S. Gurney, D. Richmond, K. Wood, T. Quindry, C. Dumke, FACSM, J. Quindry, FACSM
University of Montana, Missoula, MT
Wildland firefighters and those who recreate outdoors experience woodsmoke exposure during fire season. There is a rationale to indicate that concurrent exercise and woodsmoke exposure are deleterious to cardiovascular function, but the short-term underpinnings are currently understudied. PURPOSE: The purpose of the laboratory-based study was the examination of the concurrent effects of exercise and woodsmoke exposure on acute indicators of cardiovascular function, including heart rate variability (HRV), pulse wave velocity (PWV), blood pressure (BP), augmentation index (AIx), and blood oxidative stress. METHODS: Ten recreationally active participants performed two moderate-intensity exercise (70% VO2peak) trials (Clean Air 0µg/m3 and Woodsmoke 250µg/m3) in a randomized, crossover design. HRV, PWV, BP, AIx, and blood oxidative stress were measured at PRE, POST, and 90-minutes post-exercise for each trial. Blood oxidative stress was quantified through lipid damage (LOOH, 8-ISO), protein damage (3-NT and PC), antioxidant capacity (TEAC), and antioxidant potential (FRAP). RESULTS: HRV, PWV, BP, AIx, and oxidative stress were unaffected by woodsmoke exposure (p>0.05). CONCLUSION: Moderate-intensity aerobic exercise while exposed to woodsmoke particulate matter (250µg/m3) did not alter HRV, PWV, or blood oxidative stress.
The funding for the investigation was provided by a USDA Forest Service grant 18-CR-11138100-023 to J.C.Q.
Williamson-Reisdorph, C; Tiemessen, K; Christison, K; Gurney, S; Richmond, D; Wood, K; Quindry, T; Dumke, FACSM, C; and Quindry, FACSM, J
"CARDIOVASCULR AND BLOOD OXIDATIVE STRESS RESPONSES TO EXERCISE AND ACUTE WOODSMOKE EXPOSURE IN ACTIVE INDIVIDUALS,"
International Journal of Exercise Science: Conference Proceedings: Vol. 8:
9, Article 28.
Available at: https://digitalcommons.wku.edu/ijesab/vol8/iss9/28