- 著者
- 
             
             Sachiko Ito Uemura
             
             Takashi Kanbayashi
             
             Wakako Ito
             
             Yoshino Terui
             
             Masahiro Satake
             
             Go Eun Han
             
             Takanobu Shioya
             
             Seiji Nishino
             
          
- 出版者
- The Society of Physical Therapy Science
- 雑誌
- Journal of Physical Therapy Science (ISSN:09155287)
- 巻号頁・発行日
- vol.35, no.5, pp.330-339, 2023 (Released:2023-05-01)
- 参考文献数
- 60
        [Purpose] Herein, we aimed to investigate the effects of bathing in a sodium chloride          spring and an artificially carbonated spring on core body temperature and          electroencephalograms, to assess whether the springs facilitate sleep. [Participants and          Methods] This randomized, controlled, crossover study evaluated the effects of a sodium          chloride spring, an artificially carbonated spring, a plain hot bath, and no bath on          sleep. The subjective evaluations and recording of temperature were performed before/after          bathing at 40 °C for 15 min at 22:00 h, before nocturnal sleep (0:00–7:00 h), and after          the participants (n=8) woke up in the morning. [Results] Bathing significantly increased          the core body temperature, with significant subsequent declines observed until bedtime.          Participants in the sodium chloride spring group had the highest average core body          temperature, while participants in the no-bath group had the lowest average core body          temperature before bedtime (23:00–0:00 h). During bedtime (1:00–2:00 h), the participants          in the no bath group had the highest average core body temperature, while participants in          the artificially carbonated spring group had the lowest average core body temperature. The          amount of delta power/min in the first sleep cycle significantly increased in the bathing          groups, with the highest value during bedtime being recorded in the artificially          carbonated spring group, followed by the sodium chloride spring, plain hot bath, and          no-bath groups. These sleep changes were associated with significant declines in the          elevated core body temperature. Increased heat dissipation and decreased core body          temperature were observed in the artificially carbonated spring and sodium chloride spring          groups, which increased the delta power during the first sleep cycle compared with that          observed in the plain hot bath group, followed by the no-bath group. [Conclusion] An          artificially carbonated spring would be the most appropriate given each circumstance          because it did not cause fatigue, as observed with the sodium chloride spring.