Electrical signals are sent via ‘electrode pads’ to specific points on the body. This causes the muscles to react. As a result, two things happen:
1. Muscle pumping action:
By applying low-frequency electrical waves to a body area with stiffness/tiredness, muscles contract and extend (relax)
Muscle contracts: blood containing ‘waste’ is flushed out
Muscle relaxes: fresh blood rushes in
By this repeated ‘muscle pumping’ process, blood flow is improve
> Shoulder stiffness, tired legs and cramps are relieved.
2. Shutting out pain signals:
By applying low-frequency signals to the painful area, the nerves near this area are stimulated, which affects the pain-transmission mechanism (‘inhibits’ pain messages) towards spinal cord. These have relatively short effect. Frequencies: 2 ~ 100Hz.
Electrical waves also stimulate the human body to produce natural substances (endorphins). These have a much longer effect (5 ~ 12 hrs).
Frequencies: 100 ~ 1200 Hz.
>As a result, the sense of pain is relieved.