PDF(Pubmed)
Abstract：
Skateboarding is an Olympic event with frequent jumping and landing, where the cushioning effect by the foot structure (from the arch, metatarsals, etc.) and damping performance by sports equipment (shoes, insoles, etc.) can greatly affect an athlete\'s sports performance and lower the risk of limb injury. Skateboarding is characterized by the formation of a \"man-shoe-skateboard system,\" which makes its foot cushioning mechanism different from those of other sports maneuvers, such as basketball vertical jump and gymnastics broad jump. Therefore, it is necessary to clarify the cushioning mechanism of the foot structure upon landing on a skateboard. To achieve this, a multibody finite element model of the right foot, shoe, and skateboard was created using Mimics, Geomagic, and ANSYS. Kinetic data from the ollie maneuver were used to determine the plantar pressure and Achilles tendon force at three characteristics (T1, T2, and T3). The stress and strain on the foot and metatarsals (MT1-5) were then simulated. The simulation results had an error of 6.98% compared to actual measurements. During landing, the force exerted on the internal soft tissues tends to increase. The stress and strain variations were highest on MT2, MT3, and MT4. Moreover, the torsion angle of MT1 was greater than those of the other metatarsals. Additionally, the displacements of MT2, MT3, and MT4 were higher than those of the other parts. This research shows that skateboarders need to absorb the ground reaction force through the movements of the MTs for ollie landing. The soft tissues, bones, and ligaments in the front foot may have high risks of injury. The developed model serves as a valuable tool for analyzing the foot mechanisms in skateboarding; furthermore, it is crucial to enhance cushioning for the front foot during the design of skateboard shoes to reduce potential injuries.
摘要：
滑板运动是一项经常跳跃和着陆的奥运会项目，脚部结构的缓冲作用(来自足弓，meta骨，等。)和运动器材的阻尼性能(鞋子，鞋垫,等。）可以极大地影响运动员的运动表现，并降低肢体受伤的风险。滑板的特点是形成“人-鞋-滑板系统”，这使得它的脚缓冲机制不同于其他运动动作，如篮球垂直跳和体操跳远。因此,有必要澄清脚部结构在滑板着陆时的缓冲机制。为了实现这一点，右脚的多体有限元模型，鞋子,滑板是用Mimics制作的，Geomagic,和ANSYS。来自ollie动作的动力学数据用于确定三个特征（T1，T2和T3）的足底压力和跟腱力。然后模拟足部和meta骨（MT1-5）上的应力和应变。仿真结果与实际测量相比误差为6.98%。着陆期间,施加在内部软组织上的力趋于增加。应力和应变变化在MT2、MT3和MT4上最高。此外，MT1的扭转角大于其他meta骨的扭转角。此外,MT2，MT3和MT4的位移高于其他部分。这项研究表明，滑板运动员需要通过MTs的运动吸收地面反作用力才能着陆。软组织，骨头,前脚的韧带可能有很高的受伤风险。开发的模型是分析滑板脚部机制的有价值的工具；此外，在滑板鞋的设计过程中，加强前脚的缓冲以减少潜在的伤害是至关重要的。
