This study on 7 to 14 year old juveniles suffering from rheumatoid arthritis examined effects of low-frequency magnetic fields from a Polius-1 device. Ten daily treatment exposures of 10 to 12 minutes each were conducted on three experimental groups. The three groups showed 58, 76, 37 percent beneficial effects from the treatment.

E.A. Shlyapok, et al., “Use of Alternating Low-Frequency Magnetic Fields in Combination with Radon Baths for Treatment of Juvenile Rheumatoid Arthritis,” Vopr Kurortol Fizioter Lech Fiz Kult, 4, 1992, p. 13-17.