Department of Psychology & Biomedical Sciences, Florida State University, Tallahassee, FL, USA.
Department of Psychology, The University of Alabama, Tuscaloosa, AL, USA.
Psychophysiology. 2020 Oct;57(10):e13633. doi: 10.1111/psyp.13633. Epub 2020 Jul 14.
Past research has demonstrated that regular physical activity provides a myriad of physical, mental, and emotional benefits. The decision of whether to partake in physical activity (PA) or remain sedentary appears to be partially influenced by motivational and emotional systems. Research suggests left frontal alpha asymmetry is a neural marker of approach motivation. However, studies have not explored whether habitual levels of PA and sedentary behavior relate to this neurophysiological signal. Across two studies, individuals completed measures of habitual PA and sedentary behavior using the International Physical Activity Questionnaire-Short Form. Then, resting electroencephalography activity was recorded. Results of Study 1 (N = 32, 72% women) indicated that more time spent sitting on both weekdays and weekend days were associated with less left frontal asymmetry (r = -.45, p = .027, and r = -.55, p = .005, respectively). Study 2 recruited a larger sample (N = 96, 31% women) and investigated moderators. Greater levels of moderate (r = .27) and total (r = .29) PA were associated with greater left frontal asymmetry (ps < .05), and the relationship between sedentary behavior and less left frontal asymmetry was moderated by sex (weekday: β = .62, p = .011; weekend day: β = .41, p = .034). Our results suggest that left frontal asymmetry may be a novel neurophysiological marker for PA and sedentary behavior.
过去的研究表明，有规律的体育活动对身体、心理和情绪都有很多好处。是否参加体育活动（PA）或保持久坐不动的状态，似乎部分受到动机和情绪系统的影响。研究表明，左侧额叶阿尔法不对称是接近动机的神经标志。然而，研究尚未探讨习惯性 PA 和久坐行为是否与这种神经生理信号有关。在两项研究中，个体使用国际体力活动问卷-短表完成了习惯性 PA 和久坐行为的测量。然后，记录了静息脑电图活动。研究 1（N=32，72%为女性）的结果表明，工作日和周末每天坐着的时间越多，左侧额叶不对称程度越低（r = -.45，p =.027 和 r = -.55，p =.005）。研究 2 招募了更大的样本（N=96，31%为女性）并调查了调节因素。更高水平的中度（r =.27）和总（r =.29）PA 与更大的左侧额叶不对称相关（p <.05），而久坐行为与左侧额叶不对称程度降低之间的关系受到性别调节（工作日：β =.62，p =.011；周末：β =.41，p =.034）。我们的结果表明，左侧额叶不对称可能是 PA 和久坐行为的一种新的神经生理标志物。
