- 著者
- Eun-Jung Sung Yutaka Tochihara
- 出版者
- Japan Society of Physiological Anthropology
- 雑誌
- Journal of PHYSIOLOGICAL ANTHROPOLOGY and Applied Human Science (ISSN:13453475)
- 巻号頁・発行日
- vol.19, no.1, pp.21-27, 2000-01-30 (Released:2000-04-12)
- 参考文献数
- 29
- 被引用文献数
- 46 67
The effects of daily bathing and hot footbath (immersion of feet in hot water) in winter on the sleep behavior of nine healthy female volunteers were studied. Subjects were assigned to three sleep conditions: sleep after bathing (Condition B), sleep after hot footbath (Condition F), and sleep without either treatment (Control). Polysomnograms (consisting of electro-encephalograph, electrooculograph, and electromyograph) were obtained, and body movements during sleep were measured while monitoring both the rectal and skin temperatures of subjects. In addition, subjective sleep sensations were obtained with a questionnaire answered immediately by the subjects on awakening. The rectal temperature increased by approximately 1.0°C under Condition B, but this elevation was not observed under Condition F compared with Control. In contrast, the respective increases in the mean skin temperature of participants subjected to bathing and hot footbath were greater than those of Control, although these temperature differences became negligible 2 h after subjects went to bed. The sleep onset latency was shortened under both conditions compared with Control. Body movements during the first 30 min of sleep in Control were greater than under the other conditions. Rapid eye movement (REM) sleep decreased under Condition B compared with Condition F, and stage 3 was greater under the latter condition compared with Control. As such, the subjective sleep sensations were better under the two treatment conditions. These results suggest that both daily bathing and hot footbath before sleeping facilitates earlier sleep onset. A hot footbath is especially recommendable for the handicapped, elderly, and disabled, who are unable to enjoy regular baths easily and safely.
- 著者
- Nobuko Hashiguchi Furong Ni Yutaka Tochihara
- 出版者
- Japan Society of Physiological Anthropology
- 雑誌
- Journal of PHYSIOLOGICAL ANTHROPOLOGY and Applied Human Science (ISSN:13453475)
- 巻号頁・発行日
- vol.21, no.6, pp.277-283, 2002 (Released:2003-03-01)
- 参考文献数
- 23
- 被引用文献数
- 13 24
The effects of bathroom thermal conditions on physiological and subjective responses were evaluated before, during, and after whole-body bath (W-bath), half-body bath (H-bath) and showering. The air temperature of the dressing room and bathroom was controlled at 10°C, 17.5°C, and 25°C. Eight healthy males bathed for 10 min under nine conditions on separate days. The water temperature of the bathtub and shower was controlled at 40°C and 41°C, respectively. Rectal temperature (Tre), mean skin temperature (Tsk), blood pressure (BP), heart rate (HR), body weight loss and blood characteristics (hematocrit: Hct, hemoglobin: Hb) were evaluated. Also, thermal sensation (TS), thermal comfort (TC) and thermal acceptability (TA) were recorded.BP decreased rapidly during W-bath and H-bath compared to showering. HR during W-bath was significantly higher than for H-bath and showering (p<0.01). The double products due to W-bath during bathing were also greater than for H-bath and showering (p<0.05). There were no distinct differences in Hct and Hb among the nine conditions. However, significant differences in body weight loss were observed among the bathing methods: W-bath>H-bath>showering (p<0.001). W-bath showed the largest increase in Tre and Tsk, followed by H-bath, and showering. Significant differences in Tre after bathing among the room temperatures were found only at H-bath. The changes in Tre after bathing for H-bath at 25°C were similar to those for W-bath at 17.5°C and 10°C. TS and TC after bathing significantly differed for the three bathing methods at 17.5°C and 10°C (TS: p<0.01 TC: p<0.001). Especially, for showering, the largest number of subjects felt “cold” and “uncomfortable”. Even though all of the subjects could accept the 10°C condition after W-bath, such conditions were intolerable to half of them after showering.These results suggested that the physiological strains during H-bath and showering were smaller than during W-bath. However, colder room temperatures made it more difficult to retain body warmth after H-bath and created thermal discomfort after showering. It is particularly important for H-bath and showering to maintain an acceptable temperature in the dressing room and bathroom, in order to bathe comfortably and ensure warmth.