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The mattress pads used in this study were typical full-size pads containing 124 permanent ferrite magnets with magnetic field strengths of 750-950 gauss each. The pads themselves were made of two sheets of felt with the magnets sandwiched between them. The felt sheets were then wrapped in a cloth cover. The total number of subjects in this double-blind clinical experiment was 431 (216 male, 215 female).375 subjects were given magnetic pads, 56 were given non-magnetic pads. None of the 431 subjects knew which pad they were sleeping on. Subjects selected for the experiment were those with chief complaints related to: Neck and Shoulder pain, Back and Lower Back Pain, Back Pain (general), Lower Limb pain, Insomnia and Fatigue.
To determine the presence of any side effects, blood pressure, hemoglobin, number of erythrocytes and number of leucocytes were examined before and after the use of the mattress pads. Besides blood sedimentation, and TP, COL, ALT, GOT, GPT, Na, and K were also examined, as were functions of the kidneys, liver, pancreas, and the entire circulatory system.
| Symptom | Cases | Positive Results |
% | No Results |
% |
| Neck and Shoulder Pain | 66 | 47 | 71.2 | 19 | 28.8 |
| Back and Lower Back Pain | 76 | 61 | 80.3 | 15 | 19.7 |
| Back Pain (General) | 31 | 25 | 80.7 | 6 | 19.3 |
| Lower Limb Pain | 68 | 54 | 79.4 | 14 | 20.6 |
| Insomnia | 70 | 61 | 87.1 | 9 | 12.9 |
| Fatigue | 64 | 53 | 82.8 | 11 | 17.2 |
Out of 375 total subjects with symptoms, 301 (80.27%) reported positive results. 74 cases (19.73%) reported no results.
The percentage of subjects who realized the effect of the magnetic mattress pad within 3 days: Neck and Shoulder pain 46.9%, Back and Lower Back Pain 50%, Back Pain (general) 38.7%,Lower Limb pain 54.4%, Insomnia 64.3% and Fatigue 57.8%.
Out of 375 total subjects who slept on magnetic mattress pads, 200 (53.3%) realized the effects within 3 days. Over 70% realized the effects within 5 Days.
Testing for side effects was conducted at the conclusion of the experiment. Symptoms such as tinnitus, headache, hearing problems, visual disturbances, vertigo, palpitation, perceptive abnormality, motor disturbance, fever, digestive disturbance, cutaneous symptoms, and other clinical symptoms to suggest any side effects were found to be totally absent. Extensive testing was also done before and after the experiment to check functions of the kidney, liver, pancreas, blood pressure, and circulatory system. No clinical symptoms were found to indicate any side effects whatsoever.
Dr. Shimodaira's conclusion of this year long study conducted in 3 of Japan's foremost hospitals: "The magnetized health mattress (pad) is proved to be effective on neck and shoulder pain, back and lower back pain, back pain, lower limb pain, insomnia and fatigue, and to have no side effects."
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