| （1.暨南大学珠海校区 体育部，广东 珠海 519070；2.上海体育学院 心理学院，上海 200438） 摘 要：探究不同强度急性有氧运动对甲基苯丙胺类(methamphetamine，MA)成瘾者前额皮层活性及其执行控制能力的影响，并明确能够最大程度改善MA成瘾者执行控制能力的短时有氧运动干预方式。通过行为测量和功能性近红外光谱技术(functional near-infrared spectroscopy，fNIRS)，将MA成瘾者分为两组，分别接受30 min中等或高强度功率自行车运动干预，以探测干预前后MA成瘾者在Stroop任务中的行为表现和前额皮层活动变化。结果显示：(1)行为层面上不同强度急性有氧运动间无显著差异，均显著降低了Stroop效应的反应时；(2)神经层面上两组被试者间存在差异，中等强度组被试者右侧DLPFC的[HbO]显著高于高强度组；而高强度组被试者左侧DLPFC及右侧VLPFC的[HbO]在运动干预后显著增加。结论：30 min的中等、高强度有氧运动均能够提高MA成瘾者执行控制的任务表现，但高强度带来了更多前额皮层的活性增强(包括左侧DLPFC及右侧VLPFC)，推测高强度急性有氧运动更有利于成瘾个体恢复执行控制能力。 |
RONG Hao1，LIU Jia-ning2，LIU Xu-dong2，ZHOU Cheng-lin2，CHEN Yi-fan2
| （1.Department of Physical Education，Zhuhai Campus of Jinan University，Zhuhai 519070，China；2.Department of Psychology，Shanghai University of Sport，Shanghai 200438，China) Abstract: In order the probe into the effect of different intensities of acute aerobic exercise on the prefrontal cortical activity and execution control ability of methamphetamine (MA) addicts, and to specify the way of short-term aero-bic exercise intervention that can improve the execution control ability of MA addicts to the maximum extent, the authors, by means of behavior measurement and functional near-infrared spectroscopy (fNIRS), divided MA addicts into two groups, which accepted 30min medium or high intensity cycle ergometer exercise intervention respectively, so as to detect the changing of behavior performance and prefrontal cortical activity of MA addicts during the Stroop task before and after intervention. The results showed the followings: (1) in terms of behavior, there was no significant difference between different intensities of acute aerobic exercise, both reduced the response time of the Stroop effect significantly; (2) in terms of nerve, there was a difference between the testees in the two groups, the [HbO] of the right DLPFC of the testees in the medium intensity group was significantly higher than that of the testees in the high intensity group; while the [HbO] of the left DLPFC and the right VLPFC of the testees in the high intensity group increased significantly after exercise intervention. Conclusions: 30min medium and high intensity aerobic exercise can improve the task performance of execution control of MA addicts, but high intensity aerobic exercise brought the activity enhancement of more prefrontal cortex (including the left DLPFC and the right VLPFC). It was speculated that high intensity acute aerobic exercise is more conducive to MS addiction individuals recovering their execution control ability. |
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