Summary
The PRESTINT protocol showed that HRV biofeedback-assisted relaxation training before deployment altered parasympathetic regulation, resulting in less physiological arousal during simulated combat stress.
Methods
Large-scale RCT with military personnel before deployment
Key Findings
- HRV biofeedback group showed higher HRV during combat simulation
- Less physiological arousal despite stressful scenarios
- Parasympathetic regulation improved with training
- Effects measurable in realistic stress conditions
- Implications for pre-deployment preparation
Limitations
Single training protocol, varied individual responses
What This Means for You
Pre-exposure stress inoculation training with HRV biofeedback can build physiological resilience. The same principles apply to anyone preparing for high-stress events or environments.
Source
Read the original paper in Psychophysiology ↗
Added to HRV Zone: 2025-01-10