J. Hot Spring Sci. /2 +.,.,**2 + + + +, - +3 ++ -*,* + -+ Evaluation of the E# ect of Hyperthermia on Bedrock Bath Hideyuki O, Shoichi O, Takao O, Kumiko Y, Yoshinao K and Tsuneaki G + + + HNAMI KOUCHI HAMI +, - OSHIOKA ATAOKA OMI Abstract The physiological e# ect has not become clear concerning the bedrock bath which recently becomes popular. Then, we have explored the body temperature and the change of hemodynamics in bedrock bath. In addition, we have evaluated the e# ect on autonomic nervous system by using heart rate variability (HRV). Twenty-one young, healthy adults were selected and they took a bedrock bath by the method of bathing - times by +/ min long. As a result, tympanic temperature, cutaneous temperature and cutaneous surface blood flow increased significantly. The e# ect of hyperthermia as bathing bedrock bath was confirmed by the measurement results. Furthermore, it was found that bedrock bath is low-inpact bathing for body from the comparison with dry sauna. Therefore, the bedrock bath was expected to application to the senior citizen whose blood vessel and heart function became weak. The change of autonomic nervous activity on bedrock bath became clearer by the evaluation of HRV. HRV supported the e# ect of hyperthermia. Though, it was suggested that subjects were tired in later stages of bathing. Based upon the results of this study, it is desirable method that the iteration of bathing is, times or less, or that the period of time for once bathing is +* min or less. Key words : Bedrock bath, tympanic temperature, cutaneous temperature, blood flow, heart rate variability, dry sauna +2. 2/2. -1, Department of Materials Chemistry, Faculty of Engineering, Hosei University, Kajinocyo -1,, Koganei-shi, Tokyo +2. 2/2., Japan +-/ 2/11. + +2 Department of Internal Medicine, Showa University Toyosu Hospital, Toyosu. + +2, Koto-ku, Tokyo +-/ 2/11, Japan +03 **1- + +* +, Gomi Clinic, Hyakunincyo + +* +,, Shinjuku-ku, Tokyo +03 **1-, Japan + +,, - - 14
/2,**2 Heart rate variability, HRV,+ +/ - HRV HRV +/ - HRV, : + +333,**-,**/ Heart rate variability, HRV,.* - -+,+ -0,0..* SD,+ - +2 15
:., +.- SD : 0, 0. 0 SD : /+,.* SD HEM-1-1 OMRON FM-+2*,**0 / +* + +/ -,/ +* / Blood pressure, BP MC- /+*, OMRON PT-1 LD, OPTEX / PIM, PERIMED, Sweden,**, 2/ +/ 0, +/ + -, HRV Kataoka et al.,,**/ HRV / Heart rate, HR R RR MemCalcCHIRAM,,**, / High frequency, HF : *+/. *.. Hz Low frequency, LF : **.. *+/. Hz HF LFHF N RR NN SDNN t / p **/. SD..+ Fig. + a - *2. +* Fig. + b +/, +/ Fig., a -1 Fig., b 0, 16
/2,**2 Fig. + a Change of tympanic temperature on bedrock bath. + a Fig. + b Change of tympanic temperature on dry sauna. + b., Fig. -a - - + Fig. -b 17
Fig., a Change of cutaneous temperature on bedrock bath., a Fig., b Change of cutaneous temperature on dry sauna., b / Fig.. a Diastolic blood pressure, DBP Systolic blood pressure, SBP DBP Fig.. b DBP, SBP +* +/,* mmhg n.s. DBP / n.s. 18
/2,**2 Fig. -a Change of blood flow on bedrock bath. -a Fig. -b Change of blood flow on dry sauna. -b.- HRV / HR Fig. / / + - HF Fig. 0 + LFHF Fig. 1 +, 19
Fig.. a Change of BP on bedrock bath.. a Fig.. b Chenge of BP on dry sauna.. b HF SDNN Fig. 2 20
/2,**2 Fig. / Change of HR on bedrock bath. / Fig. 0 Change of HF on bedrock bath. 0 HF - / HRV 21
Fig. 1 Change of LF/HF on bedrock bath. 1 LFHF Fig. 2 Change of SDNN on bedrock bath. 2 SDNN BP DBP 22
/2,**2 HF LFHF HR SBP BP BP : p **+. : n.s. Heat Shock Protein, HSP HSP HSP HSP,**/ HSP HRV SDNN RR SDNN +/ - +, 0 23
HRV HRV DIVA,**/ :HSP +333 : ORP ph.3 /30..,**, :, /, +, +3.,**- : /- +3.,**/ : // // 0-. Kataoka, Y. and Yoshida, F. (,**/) : The change of hemodynamics and heart rate variability on bathing by the gap of water temperature. Biomedicine & Pharmacotherapy, /3, S3, S 33.,**0 :,**, : MemCalc,**0 3 1 /3,**1 3,* 0* 24