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首页> 外文期刊>The Journal of Physiology >Rate of rise in diastolic blood pressure influences vascular sympathetic response to mental stress
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Rate of rise in diastolic blood pressure influences vascular sympathetic response to mental stress

机译:舒张压率升高对精神压力影响血管交感神经反应

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摘要

Research indicates that individuals may experience a rise (positive responders) or fall (negative responders) in muscle sympathetic nerve activity (MSNA) during mental stress. In this study, we examined the early blood pressure responses (including the peak, time of peak and rate of rise in blood pressure) to mental stress in positive and negative responders. Negative MSNA responders to mental stress exhibit a more rapid rise in diastolic pressure at the onset of the stressor, suggesting a baroreflex-mediated suppression of MSNA. In positive responders there is a more sluggish rise in blood pressure during mental stress, which appears to be MSNA-driven. This study suggests that whether MSNA has a role in the pressor response is dependent upon the reactivity of blood pressure early in the task.
机译:研究表明,在精神压力期间,个体可能在肌肉交感神经活动(MSNA)中遇到升高(积极响应者)或跌倒(阴性响应者)。 在这项研究中,我们检查了积极和负响应者的精神胁迫的早期血压响应(包括峰值,血压峰值时间和血压率的速度)。 阴性MSNA响应者对心理压力的抑制在压力源的发作时表现出更快的舒张压升高,表明Baroreflex介导的MSNA抑制。 在积极的响应者中,精神压力期间的血压升高,这似乎是MSNA驱动的。 本研究表明,MSNA是否在压力响应中具有作用,取决于任务早期血压的反应性。

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