Neuropsychology and Functional Neuroimaging Group, Department of Basic Psychology, Clinical Psychology and Psychobiology, Universitat Jaume I, Castelló de la Plana, Spain.
Department of Psychology and Sociology, University of Zaragoza, 44003, Teruel, Spain.
Commun Biol. 2023 Oct 31;6(1):1106. doi: 10.1038/s42003-023-05423-8.
Some recent theories about the origins and maintenance of regular physical activity focus on the rewards of the properties of practicing this activity. Animal and human studies have demonstrated that mesolimbic dopamine plays a crucial role in the involvement in voluntary physical activity. Here, we test this possible role in a sample of 66 right-handed healthy young adults by studying the influence of personality and the volume of reward-related brain areas on individual differences in voluntary physical activity, objectively measured by accelerometer and subjectively self-reported by questionnaire. Our results show that a smaller volume of the right anterior cingulate cortex and lower scores on reward sensitivity contributed to explaining low levels of daily physical activity. Moreover, the volume of the right anterior cingulate cortex correlates positively with self-reported total physical activity. Results are discussed by highlighting the need to use objective measures of daily physical activity, as well as the important role of the anterior cingulate cortex and personality in promoting effortful and invigorating actions to obtain rewards.
一些关于有规律的身体活动的起源和维持的最新理论集中在实践这种活动的特性所带来的回报上。动物和人类研究已经表明，中脑边缘多巴胺在自愿进行身体活动中起着至关重要的作用。在这里，我们通过研究人格和与奖励相关的大脑区域的体积对自愿身体活动的个体差异的影响，在 66 名右利手健康年轻成年人的样本中测试了这种可能的作用，这些差异通过加速度计进行客观测量，并通过问卷进行主观自我报告。我们的结果表明，右侧前扣带皮层体积较小和奖励敏感性得分较低，有助于解释日常身体活动水平较低的情况。此外，右侧前扣带皮层的体积与自我报告的总身体活动呈正相关。研究结果通过强调使用日常身体活动的客观测量以及前扣带皮层和人格在促进获得奖励的努力和激励行动方面的重要作用来进行讨论。
