High impact forces during running have been associated with tibial stress injuries. Previous research has demonstrated increasing step rate will decrease impact forces during running. However, no research has determined the cognitive demand of gait retraining. The primary purpose was to determine the cognitive demand and effectiveness of field-based gait retraining. We hypothesized that in-field gait retraining would alter running mechanics without increasing cognitive workload as measured by EEG following learning. Runners with a history of tibial injury completed a gait retraining protocol which included a baseline run, retraining phase, practice phase, and re-assessment following retraining protocol. Results demonstrated an increase in the theta, beta, and gamma power within prefrontal cortex during new learning and corresponding return to baseline following skill acquisition and changes across alpha, beta, gamma, mu, and theta in the motor cortex (p < .05). In the midline superior parietal cortex, spectral power was greater for theta activity during new learning with a corresponding alpha suppression. Overall, the results demonstrated the use of EEG as an effective tool to measure cognitive demand for implicit motor learning and the effectiveness of in-field gait retraining.

中文翻译：

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跑步者步态再训练的认知需求：一项脑电图研究。

跑步过程中高冲击力与胫骨应力损伤有关。先前的研究表明，提高步速会降低跑步过程中的冲击力。但是，尚无研究确定步态再训练的认知需求。主要目的是确定野外步态训练的认知需求和有效性。我们假设野外步态再训练将改变跑步机制，而不会增加学习后脑电图所测的认知负荷。有胫骨损伤史的跑步者完成了步态再训练方案，其中包括基线跑步，再训练阶段，练习阶段以及再训练方案后的重新评估。结果表明theta，beta，在新的学习过程中，前额叶皮层内的γ功率和技能获得后相应返回基线，并且运动皮层中的α，β，γ，μ和θ发生变化（p <.05）。在中线上顶叶皮层中，新学习期间theta活动的频谱功率更大，并具有相应的alpha抑制。总体而言，研究结果表明，脑电图是一种有效的工具，可用于测量对内隐运动学习的认知需求以及场上步态再训练的有效性。