Speaker
Description
In recent years in Japan, 50/60 Hz magnetic therapy has attracted attention for improving blood circulation and recovery from muscle fatigue. However, its effectiveness in pressure sores has not yet been fully verified. In this study, we investigated the effect of a 50 Hz magnetic field (MF; Brms127 mT for 10 min) on ischemic circulation induced in the sole of the left foot. Ankle weights (3 kg) were attached around the left calf, to reproduce the conditions for early-stage pressure ulcers. Skin blood flow volume in the sole was monitored for 70 min using 2D laser speckle flowmetry in six healthy adult males recruited for this study. Each participant was positioned supine on a bed, and the left lower leg was compressed and immobilized with ankle weights for 60 min, causing a decrease in blood flow volume values. The heel and ankle were exposed to an MF for 10 min, and the blood flow volume values in the sole were analyzed. The results indicated that the MF rapidly increased and restored the decreased blood flow volume values. In addition, these significant effects were sustained in the rearfoot region for 40 min after the end of the exposure.
