First responders face extreme workplace stressors that can increase symptoms of distress. While mindfulness-based interventions are well-established for stress management, their time-intensive formats may pose barriers for those with long shifts and unpredictable schedules. Smartphone-delivered mindfulness interventions offer a flexible alternative. This study used a micro-randomized controlled...
Background/Objectives: First responders frequently encounter high-stress environments that challenge physiological resilience and autonomic regulation. Heart rate variability (HRV) complexity is a critical marker of adaptive capacity and stress regulation. This study assessed the impact of a wearable-based mindfulness intervention on HRV complexity among first responders using a smartwatch....