足浴の生理的作用について : 31例のケーススタディ
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Physiological effects of a mild footbath were examined on 31 subjects before, during and after 10 minutes' footbath at 41 degree cersius. Weakly alkaline hot water supplied by the administration of Yuda-Hot Spring was used for this study. Body temperature and blood flow were measured at leg and arm by a laser-doppler blood flow meter. Electro cardiogram (ECG) was recorded from leg and arm, and electro encephalogram (EEC) was lead from FZ, CZ, and PZ on the mid-sagittal plane of the head. Analog signals of ECG and EEC were digitalized and recorded for 30 min before, during and after the footbath, then analyzed by means of a conventional spectral analysis protocol (BIMUTASII). No obvious change was observed in body temperature, while subcutaneous blood flow increased in the lower limb during the footbath. Relative content of the high frequency component in the heart rate variability and of the alpha rhythm in EEC were increased in 69% subjects during the footbath. This observation may suggest that about two-thirds of subjects experienced a true rest as well as a mental relaxation during the footbath. Two dimensional distribution of the alpha rhythm content versus the delta rhythm content showed a reciprocal pattern; i.e., high alpha/low delta (delta <1 <alpha) or low alpha/high delta (alpha <1 <delta), suggesting "Relax or Sleep" effect of the footbath. Combined together, 10 min of the footbath might be good enough for rest and/or mental relaxation, and even for sleep if the bath is maintained at a moderate temperature around 41 degree cersius. Effects of warmer and/or longer footbath are not well understood and await further study.
- 山口県立大学の論文
- 2006-03-22
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