Van den Berghe Pieter, De Bock Sander, Breine Bastiaan, Horvais Nicolas, Gruber Allison, Six Joren, Samozino Pierre, Leman Marc, Morin Jean-Benoît, De Clercq Dirk, Giandolini Marlène
Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium.
Amer Sports Footwear Innovation and Sport Sciences Lab, Salomon SAS, Annecy, France.
Sports Biomech. 2025 Jun;24(6):1788-1801. doi: 10.1080/14763141.2024.2367619. Epub 2024 Oct 1.
Peak tibial accelerations are used to monitor impact severity during distance running and as input for bio-feedback. Here, peak tibial accelerations were compared between rearfoot and forefoot strikes. Two different studies were undertaken by independent research centres. Tibial acceleration and optical motion capture were collected in 14 rearfoot strikers who changed to a forefoot strike in the first centre. In the second centre, tibial acceleration of 14 other rearfoot strikers and nine forefoot strikers were collected and processed. In over-ground level running at a submaximal speed, the resultant peak tibial acceleration was greater in the instructed forefoot strike condition (Δ = 7.6 ± 1.3 g, mean ± standard error difference) and in the habitual forefoot strikers (Δ = 3.7 ± 1.1 g) than in the rearfoot strikers. The shank kinematics revealed a greater decrease in antero-posterior velocity following touchdown in the forefoot strike condition. The forefoot strikes experienced greater posterior tibial acceleration, which resulted in an increased resultant peak tibial acceleration that also occurred earlier than in the rearfoot strikes. No significant difference in axial peak tibial acceleration was found between these foot strike patterns. In conclusion, the foot strike pattern differently affects peak tibial accelerations in level running, which can have implications for monitoring and biofeedback applications.
胫骨加速度峰值用于监测长跑过程中的撞击严重程度，并作为生物反馈的输入参数。在此，对后足着地和前足着地时的胫骨加速度峰值进行了比较。两个独立研究中心开展了两项不同的研究。在第一个中心，对14名由后足着地改为前足着地的受试者进行了胫骨加速度和光学运动捕捉数据的采集。在第二个中心，采集并处理了另外14名后足着地者和9名前足着地者的胫骨加速度数据。在次最大速度的地面跑步中，在前足着地的指导条件下（Δ = 7.6 ± 1.3 g，均值 ± 标准误差差异）以及习惯性前足着地者中（Δ = 3.7 ± 1.1 g），合成的胫骨加速度峰值均高于后足着地者。小腿运动学显示，在前足着地条件下触地后前后向速度的下降幅度更大。前足着地时胫骨后向加速度更大，这导致合成的胫骨加速度峰值增加，且该峰值出现的时间也比后足着地时更早。在这些着地模式之间，轴向胫骨加速度峰值未发现显著差异。总之，着地模式在水平跑步中对胫骨加速度峰值的影响不同，这可能对监测和生物反馈应用产生影响。
