Increased levels of FFA during heat stress after a 2-week repeated heat stress

Abstract

Event Abstract Back to Event Increased levels of FFA during heat stress after a 2-week repeated heat stress Jeong-Beom Lee1*, Tae-Wook Kim2, Young-Ki Min1 and Hun-Mo Yang1 1 Soonchunhyang University, Physiology, Republic of Korea 2 Soonchunhyang University, Health care, Republic of Korea The purpose of this study was to determine whether repeated heat stress is closely related to circulating levels of free fatty acids (FFA) during repeated heat stress, defined as immersion of the lower body up to an umbilical level in hot water, 42±0.5 °C (three times/ week, 30 min/day) for 2 weeks. There were significant correlations between mean body temperature and FFA before and after repeated heat stress (p<0.001, respectively), and the level of FFA was significantly higher after repeated heat stress during heat stress (p<0.01). The threshold of mean body temperature for lipolysis was lowered by repeated heat load and enhanced lipolysis during heat stress. However, caution is needed for diabetic individuals. Acknowledgements None of the authors have any conflicts of financial interest to declare. References Bae, J.S., Lee, J.B., Matsumoto, T., Othman, T., Min, Y.K., and Yang, H.M. (2006). Prolonged residence of temperate natives in the tropics produces a suppression of sweating. Pflugers. Arch. 453, 67-72. Kim, T.W., and Lee, J.B. (2013). The effects of caffeine ingestion before passive heat loading on serum leptin levels in humans. Appl. Biochem. Biotechnol. 171,1253-1251. Lee, J.B., Bae, J.S., Matsumoto, T., Yang, H.M., and Min, Y.K. (2009). Tropical Malaysians and temperate koreans exhibit significant differences in sweating sensitivity in response to iontophoretically administered acetylcholine. Int. J. Biometeorol. 53,149-157. Lee, J.B. (2008). Heat acclimatization in hot summer for ten weeks suppress the sensitivity of sweating in response to iontophoretically-administered acetylcholin. Korean. J. Physiol. Pharmacol. 12, 349-355. Lee, J.B., Bae, J.S., Shin, Y.O., Kang, J.C., Matsumoto, T., Toktasynovna, A.A., Kaimovich, A.G., Kim, W.J., Min, Y.K., and Yang, H.M. (2007). Long-term tropical residency diminishes central sudomotor sensitivities in male subjects. Korean. J. Physiol. Pharmacol. 11, 233-237. Ramanathan, N.L. (1964). New weighing system for mean surface temperature of human body. J. Appl. Physiol. 19, 531-533. Rowell, L.B., Brengelmann, G.L., Blackmon, J.R., Murray, J.A. (1970). Redistribution of blood flow during sustained high skin temperature in resting man. J. Appl. Physiol. 28, 415-420. Tobin, L., Simonsen, L., Galbo, H., Bülow, J. (2012). Vascular and metabolic effects of adrenaline in adipose tissue in type 2 diabetes. Nutr. Diabetes. 2:e46. Keywords: Repeated heat stress, free fatty acids, Lipolysis, mean body temperature, diabetic individual Conference: Neuroinformatics 2015, Cairns, Australia, 20 Aug - 22 Aug, 2015. Presentation Type: Poster, not to be considered for oral presentation Topic: Clinical neuroscience Citation: Lee J, Kim T, Min Y and Yang H (2015). Increased levels of FFA during heat stress after a 2-week repeated heat stress. Front. Neurosci. Conference Abstract: Neuroinformatics 2015. doi: 10.3389/conf.fnins.2015.91.00014 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 01 Mar 2015; Published Online: 05 Aug 2015. * Correspondence: Prof. Jeong-Beom Lee, Soonchunhyang University, Physiology, Cheonan, ChungNam, Cheonan, Republic of Korea, leejb@sch.ac.kr Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Jeong-Beom Lee Tae-Wook Kim Young-Ki Min Hun-Mo Yang Google Jeong-Beom Lee Tae-Wook Kim Young-Ki Min Hun-Mo Yang Google Scholar Jeong-Beom Lee Tae-Wook Kim Young-Ki Min Hun-Mo Yang PubMed Jeong-Beom Lee Tae-Wook Kim Young-Ki Min Hun-Mo Yang Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.