Acute effects of static magnetic fields on cutaneous microcirculation in rabbits.

The acute microcirculatory effects of locally applied of static magnetic (SMF) to the cutaneous tissue within a rabbit ear chamber (REC) were evaluated during consciousness. Rabbits with REC were subjected to microphotoelectric plethysmography. Power levels of SMF upon the REC were controlled at 1, 5, 10 mT(milli Tesla), respectively. The duration of exposure was 10 minutes. The exposure of SMF induced variation of vasomotion with a latency of about 10 seconds in a non-dose dependent manner. SMF had a biphasic effect upon the microcirculatory system; when the vascular tone was low, the SMF enhanced vasomotion, and when it was high, the SMF suppressed vasomotion. The results suggest that the SMF can modulate vascular tone due to vasomotion which may involve in clinical efficacy for refraining from neck and shoulder stiffness.