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首页> 外文期刊>International journal of psychophysiology: official journal of the International Organization of Psychophysiology >Hydration status and cardiovascular function: effects of hydration enhancement on cardiovascular function at rest and during psychological stress.
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Hydration status and cardiovascular function: effects of hydration enhancement on cardiovascular function at rest and during psychological stress.

机译：水合状况和心血管功能：水合增强对静止和心理应激时心血管功能的影响。

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This study examined the effects of a 3-day enhanced hydration regimen on resting cardiac function and reactivity to acute stress. Healthy volunteers (14 male, 14 female) were assigned to one of two groups: Enhanced Hydration and Normal Hydration Group. Participants in the Enhanced Group were given six 1-l bottles of water and instructed to drink two bottles a day in addition to normal fluid intake for 3 days preceding their laboratory session; no extra water was given to the Normal Group. Heart rate (HR), systolic blood pressure (SBP), diastolic blood pressure (DBP), cardiac output (CO), stroke volume (SV), and total peripheral resistance (TPR) were recorded during a 10-min baseline, 6-min Paced Auditory Serial Addition Test (PASAT), 5-min recovery, 5-min intermediate baseline, and 3-min Cold Pressor Test. Repeated-measures ANOVA revealed a significant Hydration GroupxTask interaction for DBP during the cold pressor (p<0.01) with the Enhanced Group exhibiting greater DBP reactivity to cold stress relative to the Normal Group. Analysis revealed significant Hydration GroupxGender interactions for SV and TPR (p<0.05) at rest and during both the PASAT and Cold Pressor Test. Females in the Enhanced Group displayed higher SV and lower TPR relative to Enhanced Group males, whereas females in the Normal Group displayed lower SV and greater TPR relative to Normal Group males. These results suggest that 3-day hydration enhancement influences blood pressure reactivity in both men and women, and that long-term hydration enhancement is related to resting gender differences in cardiac function.
机译：这项研究检查了为期3天的增强水合方案对静息心脏功能和对急性应激反应性的影响。将健康志愿者（14名男性，14名女性）分配到以下两组之一：增强水合和正常水合组。增强组的参与者在实验前三天，除了正常摄入的液体外，还给他们灌了六瓶1升装的水，并被要求每天喝两瓶。没有给正常组多余的水。在10分钟的基线（6分钟）内记录心率（HR），收缩压（SBP），舒张压（DBP），心输出量（CO），中风量（SV）和总外周阻力（TPR）。分钟起搏听觉连续加法测试（PASAT），恢复时间5分钟，中间基线5分钟和冷压力测试3分钟。重复测量的方差分析显示，冷压期间DBP的水合GroupxTask相互作用显着（p <0.01），而增强组相对于正常组表现出更大的DBP对冷应激的反应性。分析显示，在静止状态下以及在PASAT和冷压试验期间，SV和TPR的水合GroupxGender相互作用显着（p <0.05）。增强组的女性相对于增强组的男性显示较高的SV和较低的TPR，而正常组的女性相对于正常组的男性显示较低的SV和较高的TPR。这些结果表明，三天的水合作用增强会影响男女的血压反应性，长期的水合作用增强与静息的心脏功能性别差异有关。

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