INFLUENCE OF TPICAL CAPSAICIN CREAM ON THERMOREGULATION AND PERCEPTION DURING ACUTE EXERCISE IN THE HEAT
Presenter Type
UNO Undergraduate Student
Major/Field of Study
Biology
Other
Biology
Advisor Information
Dustin Slivka
Location
MBSC Ballroom Poster # 1207 - U
Presentation Type
Poster
Start Date
24-3-2023 1:00 PM
End Date
24-3-2023 2:15 PM
Abstract
Determine if topical capsaicin, a transient receptor potential vanilloid heat thermoreceptor activator, alters thermoregulation and perception when applied topically prior to thermal exercise. Methods: Twelve subjects completed 2 treatments. Subjects walked (1.6 m·s-1, 5% grade) for 30 minutes in the heat (38°C, 60% relative humidity) with either a capsaicin (0.025% capsaicin) or control cream applied to the upper (shoulder to wrist) and lower (mid-thigh to ankle) limbs covering ~50% body surface area. Skin blood flow (SkBF), sweat (rate, composition), heart rate, temperature (skin, core), and perceived thermal sensation were measured prior to and during exercise. Results: The relative change in SkBF was not different between treatments at any time point (p=0.284). There were no differences in sweat rate between the capsaicin (1.23±0.37 L·h-1) and control (1.43±0.43 L·h-1, p=0.122). There were no differences in heart rate between the capsaicin (122±38 beats·min-1) and control (125±39 beats·min-1, p=0.431). There were also no differences in weighted surface (p=0.976) or body temperatures (p=0.855) between the capsaicin (36.0±1.7 °C, 37.0±0.8 °C, respectively) and control (36.0±1.6 °C, 36.9±0.8 °C, respectively). The capsaicin treatment was not perceived as hotter than the control treatment until minute 30 of exercise (2.8±0.4, 2.5±0.5, respectively, p=0.038) Conclusions: Topical capsaicin application does not alter whole-body thermoregulation during acute exercise in the heat despite perceiving the treatment as hotter late in exercise.
Scheduling
9:15-10:30 a.m., 10:45 a.m.-Noon, 1-2:15 p.m., 2:30 -3:45 p.m.
INFLUENCE OF TPICAL CAPSAICIN CREAM ON THERMOREGULATION AND PERCEPTION DURING ACUTE EXERCISE IN THE HEAT
MBSC Ballroom Poster # 1207 - U
Determine if topical capsaicin, a transient receptor potential vanilloid heat thermoreceptor activator, alters thermoregulation and perception when applied topically prior to thermal exercise. Methods: Twelve subjects completed 2 treatments. Subjects walked (1.6 m·s-1, 5% grade) for 30 minutes in the heat (38°C, 60% relative humidity) with either a capsaicin (0.025% capsaicin) or control cream applied to the upper (shoulder to wrist) and lower (mid-thigh to ankle) limbs covering ~50% body surface area. Skin blood flow (SkBF), sweat (rate, composition), heart rate, temperature (skin, core), and perceived thermal sensation were measured prior to and during exercise. Results: The relative change in SkBF was not different between treatments at any time point (p=0.284). There were no differences in sweat rate between the capsaicin (1.23±0.37 L·h-1) and control (1.43±0.43 L·h-1, p=0.122). There were no differences in heart rate between the capsaicin (122±38 beats·min-1) and control (125±39 beats·min-1, p=0.431). There were also no differences in weighted surface (p=0.976) or body temperatures (p=0.855) between the capsaicin (36.0±1.7 °C, 37.0±0.8 °C, respectively) and control (36.0±1.6 °C, 36.9±0.8 °C, respectively). The capsaicin treatment was not perceived as hotter than the control treatment until minute 30 of exercise (2.8±0.4, 2.5±0.5, respectively, p=0.038) Conclusions: Topical capsaicin application does not alter whole-body thermoregulation during acute exercise in the heat despite perceiving the treatment as hotter late in exercise.