At Kageyu, Nanasawa, and Kusatsu Spas, the author studied the balneological effects on lipoprotein, triglyceride, non-esterified fatty acids and fatty acid components in total lipids, cholesterol ester fraction, triglyceride fraction, non-esterified fatty acid fraction and phospholipid fraction in sera.
The results were as follows.:
(1) At Kageyu and Kusatu Spa, a single bath showed a quantitatively significant effect on non-esterified fatty acids but not on β-lipoprotein and triglyceride. An hour later after the bath, non-esterified fatty acids rose at maximum.
(2) Successive baths decreased β-lipoprotein at Kageyu, pre β-lipoprotein at Nanasawa but no significant change was observed in non-esterified fatty acids and triglyceride. A week after initiation of daily baths, value of β-lipoprotein and per cent of pre β-lipoprotein were lowered.
(3) Successive baths had no significant influence on fatty acids.