Hata Keiichiro, Yamazaki Yohei, Ishikawa Misato, Yanagiya Toshio
Faculty of Physical Education, International Pacific University, Okayama 709-0863, Japan.
Institute of Sports Sciences, International Pacific University, Okayama 709-0863, Japan.
Sensors (Basel). 2025 Jul 15;25(14):4417. doi: 10.3390/s25144417.
Understanding the foot strike pattern (FSP) and impact force of running-related injuries is crucial for athletes and researchers. This study investigated a novel method for detecting FSP using the loadsol sensor insole during treadmill running. Twelve collegiate athletes ran at three different speeds (12, 15, and 20 km/h), with their FSP determined using both the kinematic method based on the foot strike angle and the loadsol method based on the plantar force applied to the rear-, mid-, and forefoot sensor areas. This study provides significant insights into FSP detection. Comparing the kinematic method to the loadsol method, the rearfoot, midfoot, and forefoot strike detection rates were 94.7%, 37.1%, and 81.8%, respectively. Moreover, the FSP was not uniform, even during treadmill running at a constant speed, with most participants exhibiting mixed patterns across different speeds. The loadsol sensor insole could offer a promising device for in-field measurement of FSP and impact forces, potentially helping researchers and athletes better understand and predict the potential running-related injury risks by monitoring step-to-step variations in running biomechanics.
了解跑步相关损伤的着地方式（FSP）和冲击力对运动员和研究人员至关重要。本研究调查了一种在跑步机跑步过程中使用Loadsol传感器鞋垫检测FSP的新方法。12名大学生运动员以三种不同速度（12、15和20公里/小时）跑步，使用基于着地角度的运动学方法和基于施加在后足、中足和前足传感器区域的足底力的Loadsol方法来确定他们的FSP。本研究为FSP检测提供了重要见解。将运动学方法与Loadsol方法进行比较，后足、中足和前足着地的检测率分别为94.7%、37.1%和81.8%。此外，即使在以恒定速度在跑步机上跑步时，FSP也不一致，大多数参与者在不同速度下表现出混合模式。Loadsol传感器鞋垫可为现场测量FSP和冲击力提供一种有前景的设备，通过监测跑步生物力学的逐步变化，可能有助于研究人员和运动员更好地理解和预测潜在的跑步相关损伤风险。
