Garvin A W, Koltyn K F, Morgan W P
Department of Kinesiology, University of Wisconsin-Madison, 53706, USA.
Int J Sports Med. 1997 Aug;18(6):470-6. doi: 10.1055/s-2007-972666.
The purpose of this investigation was to evaluate the acute effects of physical activity and relaxation on state anxiety and blood lactate. Thirty male Ss performed resistance exercise (N=15) or cycling (N=15) for 50 min at 70% of maximum, while 30 additional male Ss practiced autogenic relaxation (N=15) or rested quietly (N=15) in a sound chamber for 50 min. Assessment of state anxiety and blood lactate was performed before, 5-10 min and 60 min following treatments. The data were analyzed with a repeated measures ANOVA for multifactor experiments, and results indicate a significant group by trial interaction for state anxiety (p<0.0001) and lactate (p < 0.0001). Post-hoc analysis revealed that: 1. lactate increased (p<0.001) immediately following resistance exercise and fell to baseline levels 60 min post exercise; 2. state anxiety was decreased (p < 0.01) at 5-10 min following autogenic relaxation and quiet rest; and 3. a reduction (p < 0.001) in state anxiety was noted at 60 min following cycling. It is concluded that: 1. comparable anxiolytic effects occur following aerobic exercise (cycling), autogenic relaxation and quiet rest, but the effect persists for a longer period of time following aerobic exercise; and 2. accumulation of lactate does not influence state anxiety in normal individuals.
本研究的目的是评估体育活动和放松对状态焦虑和血乳酸的急性影响。30名男性受试者进行了阻力运动（N = 15）或骑行（N = 15），运动强度为最大强度的70%，持续50分钟，另外30名男性受试者在隔音室中进行自生放松练习（N = 15）或安静休息（N = 15），持续50分钟。在治疗前、治疗后5 - 10分钟和60分钟对状态焦虑和血乳酸进行评估。数据采用多因素实验的重复测量方差分析进行分析，结果表明，状态焦虑（p < 0.0001）和乳酸（p < 0.0001）的组间试验交互作用显著。事后分析显示：1. 阻力运动后血乳酸立即升高（p < 0.001），运动后60分钟降至基线水平；2. 自生放松和安静休息后5 - 10分钟状态焦虑降低（p < 0.01）；3. 骑行后60分钟状态焦虑降低（p < 0.001）。研究得出结论：1. 有氧运动（骑行）、自生放松和安静休息后会产生类似的抗焦虑效果，但有氧运动后的效果持续时间更长；2. 乳酸积累对正常个体的状态焦虑没有影响。
