There have been numerous research studies based on HRV, coherent breathing, 24-hour stress and recovery, and sleep quality.  Select a heading to review the relevant research.  


 Chronic Heart Failure & COPD



    Coherent or Paced Breathing






        Lowering Sympathetic Activity



        Improving Sleep Quality






        HeartMath Institute Research 

        The HeartMath Institute has sponsored numerous research studies about HRV, coherent breathing, and other related topics.  You can check out their research page or review their research library which includes 286 research publications.  A FREE special publication is also available, Science of the Heart.  It includes coverage of the HeartMath Autonomic Assessment Report which is available as an add-on to most measurement packages sold in the store.  Research about the 24-hour assessment is available here