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The following is a list of research looking at the effects of yoga on heart rate variability (HRV).

Most research studies in this list indicate the duration and frequency of yoga. Age of participants and general level of health is sometimes noted. Some of the studies are targeting specific conditions or populations that may be aided by a yoga practice.

The most glaring omission, common to most yoga research is lack of detail or protocol specific to style, intensity, type of poses, sequences, and whether or not pranayama or yogic breathing was employed. It seems a mystery as to why the most important control to outcome is not outlined more clearly in yoga research studies.

This list is not intended to show or prove the efficacy of a yoga practice but is meant to provide a general reading list into the available literature.

Yoga Nidra Relaxation Increases Heart Rate Variability and is Unaffected by a Prior Bout of Hatha Yoga

Slow yogic breathing through right and left nostril influences sympathovagal balance, heart rate variability, and cardiovascular risks in young adults

Effect of integrated yoga on stress and heart rate variability in pregnant women

Effects of Yoga on Heart Rate Variability and Mood in Women

Effect of an office worksite-based yoga program on heart rate variability: outcomes of a randomized controlled trial

Randomized controlled trial of a 12 week yoga intervention on negative affective states, cardiovascular and cognitive function in post-cardiac rehabilitation patients

The relationship between heart rate recovery and heart rate variability in coronary artery disease

Heart rate variability changes during high frequency yoga breathing and breath awareness

Increased heart rate variability but no effect on blood pressure from 8 weeks of hatha yoga – a pilot study

The effects of regular yoga practice on pulmonary function in healthy individuals: a literature review