2022 Volume 52 Issue 2 Pages 87-93
Objectives: The purpose of this study was to clarify the differences in heat production between Hiesho (cold sensitivity) and non-Hiesho.
Subjects: Thirty-three subjects were divided into two groups: the Hiesho group (males; n＝6, females; n＝11) and the non-Hiesho group (males; n＝6, females; n＝ 10).
Methods: Heart rate, blood pressure, tympanic and hallux temperature, autonomic nervous activities index, soft lean mass and skeletal muscle mass of the Hiesho group and the non-Hiesho group were compared using SPSS Statistics 27.
Results: Sympathetic nervous activity (both males and females) in the Hiesho group was more dominant than parasympathetic nervous activity. On the other hand, the mean soft lean mass and skeletal muscle mass (both males and females) in the Hiesho group were reduced compared to those of the non-Hiesho group.
Conclusion: In the Hiesho group, sympathetic nervous activities enhanced and the mean muscle mass were reduced. Therefore, low heat production might be one of the reasons for physiological mechanism of Hiesho.
