Memory and Motor Rehabilitation Laboratory (MEMORY-LAB), Feil and Oberfeld Research Centre, Jewish Rehabilitation Hospital, Montreal Center for Interdisciplinary Research in Rehabilitation (CRIR), Laval, Quebec, Canada; School of Physical and Occupational Therapy, Faculty of Medicine, McGill University, Montreal, Quebec, Canada.
Chair of Human Movement Science, Department of Sport and Health Sciences, Technical University of Munich, Munich, Germany.
Neurobiol Learn Mem. 2023 Nov;205:107846. doi: 10.1016/j.nlm.2023.107846. Epub 2023 Oct 21.
A single bout of cardiovascular exercise (CE) performed after practice can facilitate the consolidation of motor memory. However, the effect is variable and may be modulated by different factors such as the motor task's or participant's characteristics and level of awareness during encoding (implicit vs explicit learning). This study examines the effects of acute CE on the consolidation of motor sequences learned explicitly and implicitly, exploring the potential moderating effect of fitness level and awareness. Fifty-six healthy adults (24.1 ± 3.3 years, 32 female) were recruited. After practicing with either the implicit or explicit variant of the Serial Reaction Time Task (SRTT), participants either performed a bout of 16 min of vigorous CE or rested for the same amount of time. Consolidation was quantified as the change in SRTT performance from the end of practice to a 24 h retention test. Fitness level (V̇O) was determined through a graded exercise test. Awareness (implicit vs explicit learning) was operationalized using a free recall test conducted immediately after retention. Our primary analysis indicated that CE had no statistically significant effects on consolidation, regardless of the SRTT's variant utilized during practice. However, an exploratory analysis, classifying participants based on the level of awareness gained during motor practice, showed that CE negatively influenced consolidation in unfit participants who explicitly acquired the motor sequence. Our findings indicate that fitness level and awareness in sequence acquisition can modulate the interaction between CE and motor memory consolidation. These factors should be taken into account when assessing the effects of CE on motor memory.
单次心血管运动（CE）练习后可以促进运动记忆的巩固。然而，这种效果是可变的，可能会受到不同因素的调节，例如运动任务或参与者的特征以及编码过程中的意识水平（内隐学习与外显学习）。本研究考察了急性 CE 对显式和隐式学习的运动序列巩固的影响，探索了健身水平和意识的潜在调节作用。56 名健康成年人（24.1±3.3 岁，32 名女性）被招募。在使用内隐或外显的序列反应时任务（SRTT）变体进行练习后，参与者要么进行 16 分钟的剧烈 CE 运动，要么休息相同的时间。巩固程度通过 SRTT 表现从练习结束到 24 小时保留测试的变化来量化。通过分级运动测试确定健身水平（V̇O）。通过在保留后立即进行的自由回忆测试来操作意识（内隐学习与外显学习）。我们的主要分析表明，CE 对巩固没有统计学上的显著影响，无论在练习期间使用哪种 SRTT 变体。然而，一项探索性分析根据运动练习过程中获得的意识水平对参与者进行分类，表明在明显获得运动序列的体能不足的参与者中，CE 对巩固有负面影响。我们的研究结果表明，在序列获取中，健身水平和意识可以调节 CE 和运动记忆巩固之间的相互作用。在评估 CE 对运动记忆的影响时，应考虑这些因素。
