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Effects of dry and mist saunas on circulatory and thermoregulatory functions in humans

Health 2013年第2期5卷 267-273页

作者： Satoshi Iwase Yuko Kawahara Naoki Nishimura Hiroki Takada mayumi nagata Yuki Niimi Chihiro Miwa Aichi Medical College for Physical Therapy and Occupational Therapy Kiyosu Japan Department of Human & Artificial Intelligent Systems Graduate School of Engineering University of Fukui Fukui Japan Department of Neurology Tsushima Municipal Hospital Tsushima Japan Department of Physiology Aichi Medical University Nagakute Japan Group of Home Systems & Appliance R&D Department of Home Systems & Appliance Sales Toho Gas Co. Ltd. Nagoya Japan Plumbing Fixtures Technology Research Institute Kitchen & Plumbing Fixtures Company LIXIL Corporation Tokoname Japan

To test the hypothesis that mist sauna is a safer way of bathing than dry sauna, we compared changes in circulatory and thermoregulatory functions during 10 min sauna bathing in mist sauna at 40℃ with relative humidity of 100%, and in dry sauna by infrared ray at 70℃ with relative humidity of 15%. Subjects were seven healthy young men aged 29 ± 6 yrs (mean ± SD). We measured blood pressure, heart rate, skin temperatures at chest, forearm, thigh, and leg, tympanic temperature (Tty) by thermistors, skin blood flow at forearm by laser Doppler flowmetry, and sweat rate by ventilated capsule method at 1 min intervals throughout the experiment. Total sweating and change of hematocrit were also measured for dehydration analysis. Blood pressure was elevated more and changes in heart rate and total sweating were larger in dry sauna than mist. A significant hematocrit increase was observed in dry sauna bathing only. Mean skin temperature and Tty in dry sauna were elevated higher than those in mist. Heat stress of the dry sauna may be stronger than that of the mist, leading to dehydration and hypovolemia by sweating. Percent plasma volume loss was significantly larger in the dry than mist sauna. Changes in skin blood flow and sweat rate/Tty during mist sauna were significantly larger than those during dry sauna bathing despite heat stress of the mist sauna. The mist sauna bathing may thus be safer physiologically, and provide more effective vascular dilatation and sweating than the dry sauna bathing.

关键词： Sauna Bathing Mist Sauna Dry Sauna Heat Stress Hemodynamic Change Thermoregulatory Function

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Therapeutic factors in the process of psychodynamic play therapy with maltreated children in Japan

Therapeutic factors in the process of psychodynamic play the...

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第十九届世界儿童及青少年精神卫生与相关学科学术会议

作者： Arata Oiji Yukiko Morioka Madoka Sato Yume nagata Eri Sasaki mayumi Oki Asami Sato Sumiko Naito Kitasato University Japan Taisho University Japan Japan Ground Self Defense Force Japan Sakuracho Hospital Japan Yamagata Prefecture Japan Nanakubo Shi-on-en Japan Kuzuha-no-mori Japan

＜正＞Background The number of child maltreatment cases filed by the child guidance centers had been increasing rapidly in these twenty years and reached 37 323 in 2006 in *** two thirds（63.4%in 2006） of maltreated children separated from their parents are placed in"Jido yougo shisetsu"（JYS）.J YS is a group foster care facility in *** may be similar to children’s homes in *** Ministry of Health,Labor and Welfare of Japan started financial support for JYS to introduce child psychotherapists in 1999 and family social workers in 2004 in order to facilitate therapeutic functions of *** aim of the present study is to explore important therapeutic

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