Demin Denis, Poskotinova Liliya
N. Laverov Federal Center for Integrated Arctic Research of the Ural Branch of the Russian Academy of Sciences, Arkhangelsk 163020, Russia.
Life (Basel). 2024 Dec 26;15(1):11. doi: 10.3390/life15010011.
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 ( = 40) and Russian ( = 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, ms) 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.
心率变异性生物反馈（HRV BF）训练有助于适应新的气候、地理和社会环境。在北极地区学习的热带地区个体进行HRV BF训练期间的神经生理变化尚不清楚。本研究的目的是研究在俄罗斯北极地区学习的印度和俄罗斯学生在单次短期HRV BF训练期间的脑电图（EEG）变化。对阿尔汉格尔斯克（北纬64°33′，东经40°32′）一所医科大学的40名印度学生和40名俄罗斯健康学生（年龄19 - 21岁）进行了研究。在基线（5分钟）和短期HRV BF训练期间（5分钟）测量HRV和EEG参数，以增加HRV频谱的总功率（TP，毫秒）。印度学生的基线心率和压力指数水平显著更高。在HRV BF训练期间，俄罗斯学生的交感神经活动下降更为显著，而两组所有脑区的α脑电活动均显著增加。在印度学生中，额叶、中央和颞叶区域的θ和β1脑电频谱功率有显著增加。与俄罗斯学生相比，印度学生的HRV BF训练与更明显的脑系统激活有关。
