Physiological Polymorphism of thermogenesis during cold exposure

2017 Fiscal Year Final Research Report

• Project/Area Number: 26291097
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Applied anthropology
• Research Institution: Kyushu University (2015-2017); Hokkaido University (2014)
• Principal Investigator: Maeda Takafumi 九州大学, 芸術工学研究院, 教授 (90301407)
• Co-Investigator(Kenkyū-buntansha): 西村 貴孝 長崎大学, 医歯薬学総合研究科(医学系), 助教 (80713148)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: 生理人類学 / 環境適応能 / 生理的多型性 / 体温調節 / 産熱反応

Outline of Final Research Achievements

The purpose of this study was to examine individual differences and their influence factors from the patterns of cold-induced non-shivering and shivering thermogenesis. Adult males participated to this study, and they exposed to cold environment which air temperature was falling from 28 degrees to 15 or 5 degrees for 90 min. Measurements were the rectal and skin temperatures, expired gas analysis value, electromyogram(EMG), etc during cold exposure. The cold-induced thermogenesis was quantified from oxygen intake and carbon dioxide emissions obtained from exhalation gas analysis, and was divided into non-shivering and shivering thermogenesis by EMG. From the pattern of thermogenic reaction, it became possible to divide into three types, which were non-shivering thermogenesis by brown adipose tissue, non-shivering by other effector than brown adipose tissue, and shivering thermogenesis type. It was possible to evaluate physiological polymorphism in cold - induced heat production.

Free Research Field

生理人類学