CET and RET tecar therapy

CET (Capacitive Mode) and RET (Resistive Mode) are the two core operating modes of tecar therapy (a type of high-frequency diathermy). Simply put, they differ in the type of body tissue they target: CET primarily acts on water-rich soft tissues, while RET primarily acts on high-resistance, dense tissues.

The specific princIples and applications of the two are compared below:

一、CET (Capacitive Mode)

Principle of Action: Utilizing the capacitive effect, energy is primarily concentrated in soft tissues with high water content and rich electrolytes (such as muscles, blood vessels, and lymph).

Physiological Effects:** Promotes blood circulation, accelerates inflammation resolution, relieves swelling, and relaxes supeRficial muscles.

Common Applications:** Muscle strains, lymphedema, soft tissue contractures, abdominal core activation (e.g., targeting the transverse abdominis muscle).

二、RET (Resistive Mode)

Principle of Action: Utilizing the resistive effect, energy penetrates deeper, preferentially acting on tissues with higher fat and fibrous components (such as bones, ligaments, tendons, and fascia). Physiological Effects: Deep heating, stimulates tissue repair, relieves deep pain, and increases joint mobility.

Common Applications: Tendinitis, ligament injuries, joint capsule contractures, fasciitis, and bone spur pain.

Clinical Efficacy Reference: A 2025 study showed that combining CET and RET during exercise significantly increased the thickness of the transverse abdominis and internal oblique muscles, contributing to abdominal muscle remodeling and trunk stability.

If you see these parameters in a rehabilitation center, the practitioner typically uses CET to treat superficial muscle problems and then uses RET to treat deep joint or ligament issues. Are you planning to use this technology for sports rehabilitation or for specific pain symptoms? Tell me your specific scenario, and I can help you analyze which mode is more suitable.