Change of digital blood flow during sodium sulfate bathing was studied using laser Doppler flowmeter. The 10 subjects were divided into two groups; group A and group B. In group A, digital bloood flow was measured in the following order; in the air→plain water→air→sodium sulfate bathing→air, while in group B, in the air→sodium sulfate bathing→air→plain water→air. The temperature of the water was kept at 40°C using thermostat. The 10g of sodium sulfate was dissolved in the 10L of water. In group A, the digital blood flow was 60.2±16.7 in the plain water and 70.6±35.0 in the sodium sulfate water, while in group B, 30.4±12.7 in the sodium sulfate water and 7.36±10.06 in the plain water (P<0.05). Above results suggest an increase in digital blood flow in the sodium sulfate bathing, although there were great differences by individual and by the order of immersion.
To find the effects of habitual hot-spring bathing from a young age on the blood pressure of adults, the effects of hot-spring bathing on lowering blood pressure and serum lipoperoxides were investigated using spontaneously hypertensive rats (SHR). Male SHRs, six week old, were subjected to hot bathing at 40°C for 10min per day for 14 weeks continuously. 1) Hot bathing tended to suppress blood pressure. For hot-spring bathing, blood pressure was maintained within 100 to 120mmHg until the end of the bathing experiment. Furthermore, these controlled values of blood pressure were maintained for more than 5 weeks after cessation of the experiment. For plain-water bathing, blood pressure increased gradually, but then was maintained within 100 to 145mmHg until the end of the experiment. These values were maintained for 4 weeks after cessation of the bathing experiment. In those SHRs that were not subjected to bathing, blood pressure was 100mmHg at the age of 6 weeks, 150mmHg at the age of 13 weeks, 160mmHg at the age of 19 weeks, and 170mmHg at the age of 24 weeks. Accordingly, it was found that hot-spring bathing is more effective than plain-water ordinary bathing in suppressing blood pressure. 2) The serum lipoperoxide values decreased during the 12th week of the bathing experiment. These values remained at a significantly low level until the end of the 6th week after cessation of the bathing experiment. This finding seems to suggest that habitual bathing from a young age may slow down the aging process. 3) It was shown that the concentrations of catecholamines in blood were lower in both the hot-spring bathing group and the plain-water bathing group than those in the non-bathing group. This may indicate that controlled secretion of catecholamines is related to the relaxation induced by bathing. 4) The rate of weight increase was significantly lower in the groups of SHRs subjected to hot-spring bathing and plain-water bathing from a young age than in the non-bathing group.
To confirm the safety of home-use electrotherapy units, an ultrashort wave unit and a TENS unit were used on five healthy adults and their effects on living bodies were studied. 1. The subjects were five healthy adults of ages ranging from 22 to 55. 2. Home-use ultrashort wave unit (K-50A) and home-use TENS unit (Twin-pal M), both of which are products of ITO Company in Tokyo, Japan, were used in the study. 3. Ultrashort wave unit were used on all five subjects, and TENS treatment was combined on two subjects. On three subjects, a pair of applicators were attached on the low back to irradiate the right and left suprarenal body region simultaneously for 30 minutes treatment (suprarenal body irradiation method). On two subjects, one applicator was attached to the abdomen and the other one, to the back to irradiate one kidney at a time (single kidney irradiation method). The irradiation time for the right and left kidney region was 15 minutes each. TENS treatment was applied to “Jinyu” and “San-inko” for 15 minutes each at a medium intensity. 4. The study was conducted from July 21 to Octber 26. 5. Blood and urinary analysis and kidney function test were performed once before the treatment and five times during the treatment. From a clinical viewpoint, no abnormality was found in the results of blood tests, urine tests, electrolyte tests, liver function tests, or kidney function tests. 6. PAH clearance values increased above the normal range when the number of times and days of this therapy increased. Such tendency was particularly remarkable in two subjects to whom both ultrashort wave and TENS treatment were applied. 7. We conclude that long-term use of home-use electrotherapeutic units has no side effects on human bodies, and it has rather a good effect on kidney function by increasing kidney blood flow.
A symposium on spas in Peru was held in Lima on 27-28., May, 1991. Then four spas in Peru, namely Monterrey, Chancos, La Merced, and Oyeros were inspected. All these spas are situated 2500-3000 meters above sea level and surrounded by beautiful woods and streams. Monterrey and Chancos have thermal pool and natural vapor bath rooms other than individual bath facilities. Waters of Oyeros are rich in Lithium. Tourist hotels are provided only in Monterrey.