Haltmar Hana, Janura Miroslav, Kolářová Barbora
Department of Natural Sciences in Kinanthropology, Faculty of Physical Culture, Palacký University Olomouc, Olomouc, Czech Republic.
Department of Rehabilitation, University Hospital Olomouc, Olomouc, Czech Republic.
Sci Rep. 2025 Jan 2;15(1):191. doi: 10.1038/s41598-024-84081-0.
Motor imagery (MI) is a mental simulation of a movement without its actual execution. Our study aimed to assess how MI of two modalities of gait (normal gait and much more posturally challenging slackline gait) affects muscle activity and lower body kinematics. Electromyography (biceps femoris, gastrocnemius medialis, rectus femoris and tibialis anterior muscles) as well as acceleration and angular velocity (shank, thigh and pelvis segments) data were collected in three tasks for both MI modalities of gait (rest, gait imagery before and after the real execution of gait) in quiet bipedal stance in 26 healthy young adults. No significant change was observed in electromyography activity and lower body kinematics when comparing MI tasks of normal gait. A significantly higher acceleration for the lower limb segments in the vertical direction and for the pelvis in the mediolateral and anteroposterior direction and angular velocity for pelvis in the frontal plane were found during MI of slackline gait after its real execution compared to rest. The results show that MI of normal gait does not lead to any significant changes, while MI of slackline gait affects lower body kinematics parameters.
运动想象（MI）是一种不实际执行运动的运动心理模拟。我们的研究旨在评估两种步态模式（正常步态和姿势要求更高的走扁带步态）的运动想象如何影响肌肉活动和下半身运动学。在26名健康年轻成年人安静的双足站立姿势下，针对两种步态模式的运动想象（休息、实际步态执行前后的步态想象）的三个任务，收集了肌电图（股二头肌、腓肠肌内侧头、股直肌和胫骨前肌）以及加速度和角速度（小腿、大腿和骨盆节段）数据。比较正常步态的运动想象任务时，未观察到肌电图活动和下半身运动学有显著变化。与休息相比，在实际执行走扁带步态后的运动想象过程中，发现下肢节段在垂直方向以及骨盆在内外侧和前后方向的加速度显著更高，并且骨盆在额面的角速度显著更高。结果表明，正常步态的运动想象不会导致任何显著变化，而走扁带步态的运动想象会影响下半身运动学参数。
