Key result
A 5-minute heart rate variability biofeedback session increased alpha EEG activity in both groups, with Indian students showing more pronounced activation in theta and beta1 spectral power.
Why the study?
Neurophysiological changes during heart rate variability biofeedback in individuals from tropical regions studying in the Arctic are not well understood.
Does a single short-term heart rate variability biofeedback session alter electroencephalographic and HRV parameters differently in healthy Indian versus Russian students studying in the Russian Arctic?
Cross-Sectional (n=80)
No
Does a single short-term heart rate variability biofeedback session alter electroencephalographic and HRV parameters differently in healthy Indian versus Russian students studying in the Russian Arctic?
Short-term HRV biofeedback training induces more pronounced brain system activation in Indian students compared to Russian students adapting to the Arctic environment.
May indicate ethnicity- or adaptation-linked EEG responses to brief HRV biofeedback; leaves open generalizability and clinical relevance.
Heart rate variability biofeedback (HRV BF) training aids adaptation to new climatic, geographical, and social environments. Neurophysiological changes during the HRV BF in individuals from tropical regions studying in the Arctic are not well understood. The aim of this study was to research electroencephalographic (EEG) changes during a single short-term HRV BF session in Indian and Russian students studying in the Russian Arctic. The Indian (n = 40) and Russian (n = 40) healthy students (age 19–21 years) at a medical university in Arkhangelsk (64°33′ N 40°32′ E) were studied. HRV and EEG parameters were measured at baseline (5 min) and during a short-term HRV BF session (5 min) to increase the total power (TP, ms2) of the HRV spectrum. The baseline heart rate and stress index levels were significantly higher in the Indian students. During the HRV BF sessions, the sympathetic activity decreased more significantly in Russian students, while the alpha EEG activity significantly increased across all brain regions in both groups. In Indian students, there was a notable increase in theta and beta1 EEG spectral power in the frontal, central, and temporal regions. HRV BF training in Indian students was associated with a more pronounced activation of brain systems compared with Russian students.
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Демин et al. (2024) conducted a cross-sectional in Healthy (n=80). Short-term heart rate variability biofeedback (HRV BF) training vs. Baseline and Russian students was evaluated on Electroencephalographic (EEG) changes and HRV parameters. A 5-minute heart rate variability biofeedback session increased alpha EEG activity in both groups, with Indian students showing more pronounced activation in theta and beta1 spectral power.
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