大脑血液动力学和阴道介导的HRV与高频和低频呼吸相关:一个探索性,随机化,交叉研究
Chetan Aacharya1, Shirley Telles1,2, Sachin Kumar Sharma2
1Department of Yoga, University of Patanjali, Haridwar, Uttarakhand, India.
International journal of yoga
|June 20, 2024
概括
呼吸技巧,慢速和快速,降低中脑动脉 (MCA) 血流速度,增加抵抗力. 这些MCA血液动力学变化可能与呼吸练习期间神经活动减少有关.
科学领域:
- 神经科学是一个神经科学.
- 心血管生理学心血管生理学
- 呼吸系统生理学 呼吸系统生理学
背景情况:
- 自发控制呼吸会影响中脑动脉 (MCA) 血流.
- 不同呼吸速率对MCA血流的具体影响仍未得到充分研究.
研究的目的:
- 研究缓慢 (熊蜂呼吸) 和快速 (高频呼吸) 技术对MCA血流的影响.
- 评估这些呼吸模式对阴道介导心率变化 (VmHRV) 的影响.
主要方法:
- 30名健康成年人参加了一项随机交叉研究.
- 参与者练习高频呼吸 (HFYB,54.2次呼吸/分钟) 和大蜂呼吸 (BBYB,3.8次呼吸/分钟).
- 使用跨皮多普勒声学测量MCA血液动力学;也记录了VmHRV和呼吸.
主要成果:
- 无论是HFYB还是BBYB,MCA流速都降低了 (缩峰值,缩末端,平均值),MCA脉动性指数增加.
- 在BBYB期间VmHRV增加 (反映在HF和LF功率中),但在HFYB期间下降 (减少HF功率).
- 在HFYB期间观察到VmHRV变化的统计学意义 (P <0.05).
结论:
- 这两种呼吸技术,无论频率如何,似乎都能降低MCA流速,增加脑血管阻力.
- 观察到的MCA血液动力学变化可能与呼吸期间全球神经活动减少有关.
- 在缓慢和快速呼吸技术之间,VmHRV反应有所不同,这表明自主神经系统有不同的调节.
更多相关视频
08:12Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
Published on: June 5, 2019
19.8K
10:45A Community-based Stress Management Program: Using Wearable Devices to Assess Whole Body Physiological Responses in Non-laboratory Settings
Published on: January 22, 2018
7.6K
相关概念视频
Factors Influencing Heart Rate
2.6K
The heart rate, or pulse rate, is a vital indicator of cardiovascular health. It reflects the number of times the heart beats per minute. Various physiological and environmental factors influence heart rate, increasing or decreasing cardiac output. Understanding these factors is crucial for assessing heart function and identifying potential health issues.
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
Let us explore the significant factors affecting heart rate, including age, body temperature, posture, acute pain, chemical influences,...
2.6K
Neural Regulation of Blood Pressure
2.8K
The neural regulation of blood pressure involves intricate interactions between the autonomic nervous system (ANS) and cardiovascular system, ensuring adequate perfusion of tissues. This regulation primarily occurs through baroreceptor and chemoreceptor reflexes, involving both short-term and long-term mechanisms.
Baroreceptor Reflex
Baroreceptors, located in the carotid sinuses and aortic arch, detect changes in blood pressure. When blood pressure rises, these stretch-sensitive receptors...
Baroreceptor Reflex
Baroreceptors, located in the carotid sinuses and aortic arch, detect changes in blood pressure. When blood pressure rises, these stretch-sensitive receptors...
2.8K
Hyperpnea and Hyperventilation
1.0K
Hyperventilation refers to a higher-than-normal rate and depth of breathing, often associated with anxiety attacks. This excessive breathing surpasses the body's need to expel CO2, leading to a condition known as hypocapnia - an unusually low level of carbon dioxide in the blood. Hypocapnia can constrict cerebral blood vessels, reducing blood flow to the brain, which may result in dizziness or fainting. Early signs include tingling and muscle spasms in the hands and face, caused by falling...
1.0K
Regulation of Heart Rates
1.7K
The regulation of heart rate is a complex process controlled by the autonomic nervous system (ANS), hormonal influences, and intrinsic cardiac mechanisms. The ANS has two main components: the sympathetic nervous system (SNS) and the parasympathetic nervous system (PNS).
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
The SNS increases heart rate through the release of norepinephrine and epinephrine, which act on beta-1 adrenergic receptors in the heart. This action increases the rate of depolarization in the sinoatrial (SA) node, the heart's...
1.7K
Autoregulation of Blood Flow
2.3K
Autoregulation mechanisms are characterized by their inherent capacity for self-regulation without necessitating specific nervous stimulation or endocrine control. These mechanisms facilitate the adjustment of blood flow and, therefore, perfusion specific to each tissue region. This self-regulation encompasses chemical signals and myogenic controls.
Chemical Signaling in Autoregulation
Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation....
Chemical Signaling in Autoregulation
Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation....
2.3K
Cardiac Output I:Effect of Heart Rate on Cardiac Output
735
Cardiac Output
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart...
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart...
735
