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Association between individual differences in interoception and cardiac coherence during heart rate variability
Ryuji Saito1, Kazuki Yoshida2, Daisuke Sawamura2
1Graduate School of Health Sciences, Hokkaido University, Sapporo, Japan.
Physiology & Behavior
|March 10, 2025
Summary
Heart rate variability biofeedback (HRVBF) training effectiveness may depend on individual interoception skills. Higher vagally-mediated heart rate variability (vmHRV) correlates with better cardiac coherence, suggesting interoception influences HRVBF outcomes.
Area of Science:
- Psychophysiology
- Neuroscience
Background:
- Heart rate variability biofeedback (HRVBF) trains increased vagally-mediated heart rate variability (vmHRV) through slow breathing and heart rhythm feedback.
- HRVBF is recognized for its benefits in emotion and cognition, with growing interest in participant characteristics influencing its effects.
- Neural mechanisms of HRVBF and interoception processing share commonalities, prompting investigation into their relationship.
Purpose of the Study:
- To comprehensively measure interoception in healthy young adults.
- To examine the relationship between interoception and cardiac coherence, a key indicator of HRVBF effects.
- To identify participant characteristics, specifically interoception and HRV parameters, that predict HRVBF training outcomes.
Main Methods:
- Fifty-four healthy young participants completed subjective interoception assessments (MAIA-J, BPQ-BAVSF-J) and objective measures (heartbeat counting task, HRV).
- Cardiac coherence scores from HRVBF and visual exteroception were also measured.
- Multiple regression analysis was employed to assess the influence of interoception, HRV, and visual exteroception on cardiac coherence.
Main Results:
- Certain subjective interoception measures and HRV parameters were significantly associated with the cardiac coherence score.
- Higher vmHRV demonstrated a positive correlation with enhanced cardiac coherence, aligning with previous research.
- The multiple regression analysis indicated a limited, though present, effect of interoception on cardiac coherence, suggested by a low adjusted R-squared and few selected predictors.
Conclusions:
- Interoception and vmHRV are associated with cardiac coherence, potentially influencing HRVBF training outcomes.
- These findings may aid in predicting HRVBF effectiveness and identifying individuals likely to benefit from the training.
- Further research is warranted to fully elucidate the role of interoception in HRVBF and optimize participant selection for training.
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