Sympathetic nervous system and behavioral responses to stress following exercise training.
Sympathetic nervous system and behavioral responses to stress following exercise training.
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运动训练后的交感神经系统和对压力的行为反应。
DOI：
10.1016/0031-9384(92)90293-b
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发表时间：
1992
影响因子：
2.9
通讯作者：
Horn,TS
中科院分区：
文献类型：
--
作者：
Sothmann,MS;Hart,BA;Horn,TS
本研究检验了短期（16周）运动计划改变交感神经系统（SNS）和对急性心理压力的选择性行为反应的假设。将24名最大有氧能力（V = maxO2）值< 40 ml·kg - 1·min - 1、既往久坐不动的中年男性分为实验组（n = 12）和对照组（n = 12）。所有受试者在运动前和运动后训练时进行改良的Stroop试验（18分钟），在此期间，每隔3个时间间隔抽取静脉血液样本以测定血浆儿茶酚胺（CA）。连续记录运动表现，以评估反应时间的前运动（PMT）和运动（MOT）成分。在修改Stroop后立即使用一组字谜来确定引起的认知疲劳水平。在运动前和运动后干预时，总组（n = 24）在状态焦虑、心率和血浆去甲肾上腺素方面均有显著（p≤0.05）升高。随着时间的推移，PMT或MOT没有明显的变化。与非应激值相比，应激后的字谜表现得分显著延长（p≤0.01）。实验组运动训练3天/周，连续16周，使vo2max增加20%。然而，在干预前或干预后，CA或对改良Stroop的行为反应没有组间差异。这些发现不支持短期有氧训练显著改变中年男性暴露于急性心理挑战的SNS活动或中央加工行为测量的假设。
This study tests the hypothesis that a short-term (16 weeks) exercise program modifies sympathetic nervous system (SNS) and selected behavioral responses to acute psychological stress. Twenty-four previously sedentary middle-aged men with maximal aerobic capacity (V ̇ maxO2) values < 40 ml·kg−1·min−1were assigned to experimental (n = 12) and control (n = 12) groups. All subjects performed a modified Stroop test (18 min) at pre- and postexercise training during which intravenous blood samples were drawn at three time intervals for plasma catecholamine (CA) determination. Motor performance was continuously recorded for assessment of premotor (PMT) and motor (MOT) components of reaction time. A set of anagrams were administered immediately following the modified Stroop to determine the level of cognitive fatigue induced. At both pre- and postexercise intervention, the total group (n = 24) manifested significant (p ≤ 0.05) elevations in state anxiety, heart rate, and plasma norepinephrine. No significant changes occurred over time on PMT or MOT. There were significantly (p ≤ 0.01) lengthened anagram performance scores poststress compared to nonstress values. The experimental group exercise trained 3 days/week for 16 weeks, resulting in a 20% increase in V̇O2max. However, there were no group differences on the CA or behavioral responses to the modified Stroop at pre- or postintervention. These findings do not support the hypothesis that short-term aerobic training significantly alters SNS activity or behavioral measures of central processing in middle-aged men exposed to an acute psychological challenge.