Brasil LJ et al. — Effects of Pulsed Radiofrequency on a Standard Model of Muscle Injury in Rats
Anesthesia and Pain Medicine, February 2020
This Brazilian rat study investigated whether PRF could reduce oxidative stress and inflammation following acute muscle trauma. Twenty-four male Wistar rats were divided into four groups (control, PRF only, trauma only, trauma + PRF), with PRF delivered using a Spring2 device — notably one of the few studies explicitly naming the Spring device in the methods.
Key findings after 7 days:
- Oxidative stress (measured via TBARS/lipid peroxidation): increased by 233% with trauma, fully normalized by PRF
- Antioxidant enzymes (SOD and catalase): significantly disrupted by trauma, both restored to near-control levels with PRF
- Pro-inflammatory cytokines (TNF-α, IL-1β, IL-6): elevated by 215–326% with trauma, substantially reduced by PRF
The authors propose that PRF's effects are mediated through the spin-correlated radical-pair mechanism (SCRPM); the magnetic field influencing unpaired electron spin states, thereby modulating free radical behavior and redox equilibrium.
Significance: Strong preclinical evidence supporting PRF's anti-inflammatory and antioxidant effects, with a direct mechanistic hypothesis linking electromagnetic field physics to biological tissue response.