The Proceedings of Design & Systems Conference
Online ISSN : 2424-3078
2020.30
Session ID : 1307
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Evaluation of the effects of AC magnetic fields on improved circulation of venous edema in the lower limb
*Akifumi HARADAHideyuki OKANOHiromi ISHIWATARIKeiichi WATANUKI
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Abstract

In this study, the effects of exposure to a 50 Hz AC magnetic field (Bmax 180 mT, 10 minutes) on skin blood flow volume, skin temperature and lower limb volume after tourniquet compression (50-60 mmHg) of the upper calf under knee in healthy adults were examined in a double-blind manner. The AC magnetic field was applied to the calf and foot of the right lower extremity immediately after 10 minutes of completion of hemostasis, with magnetic field exposure or sham exposure for 10 minutes. Although blood flow volume was significantly reduced from baseline immediately after the compression hemostasis, magnetic field exposure significantly increased the change rate of blood flow volume during and after exposure to the magnetic field compared to sham exposure. In addition, magnetic field exposure significantly increased skin temperature and decreased edema volume earlier than sham exposure. However, the results of change rate of skin temperature and edema volume showed no significant differences between them. These results suggest that AC magnetic field exposure improves the edema caused by circulatory disturbance.

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© 2020 The Japan Society of Mechanical Engineers
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