Research Group in Sports Biomechanics (GIBD), Department of Physical Education and Sports, University of Valencia, 46010 Valencia, Spain.
Physical Education and Sport, University of Alicante, 03690 San Vicente del Raspeig, Spain.
Sensors (Basel). 2021 Mar 4;21(5):1758. doi: 10.3390/s21051758.
Running retraining programs focused on concurrent feedback of acceleration impacts have been demonstrated to be a good strategy to reduce running-related injuries (RRI), as well as to improve running economy and reduce acceleration impacts and injury running incidence. Traditionally, impacts have been registered by mean of accelerometers attached directly to the athletes, which is inaccessible to the entire population, because it requires laboratory conditions. This study investigated the validity and reliability of a new device integrated directly into the treadmill, compared to a traditional acceleration impact system. Thirty healthy athletes with no history of RRI were tested on two separate days over the instrumented treadmill (AccTrea) and simultaneously with an acceleration impact system attached to the participant (AccAthl). AccTrea was demonstrated to be a valid and reliable tool for measuring spatio-temporal parameters like step length (validity intraclass correlation coefficient (ICC) = 0.94; reliability ICC = 0.92), step time (validity ICC = 0.95; reliability ICC = 0.96), and step frequency (validity ICC = 0.95; reliability ICC = 0.96) during running. Peak acceleration impact variables showed a high reliability for the left (reliability ICC = 0.88) and right leg (reliability ICC = 0.85), and peak impact asymmetry showed a modest validity (ICC = 0.55). These results indicated that the AccTrea system is a valid and reliable way to assess spatio-temporal variables, and a reliable tool for measuring acceleration impacts during running.
运行重新训练计划，重点关注加速度影响的同时反馈，已被证明是减少与跑步相关的损伤（RRI）的有效策略，同时还可以提高跑步经济性，降低加速度影响并减少受伤的跑步发生率。传统上，加速度是通过直接附着在运动员身上的加速度计来记录的，但这种方法无法普及到所有人，因为它需要实验室条件。本研究比较了一种新的集成到跑步机中的设备与传统的加速度冲击系统的有效性和可靠性。30 名没有 RRI 病史的健康运动员在仪器化跑步机（AccTrea）上分别进行了两次测试，同时在运动员身上附着有加速度冲击系统（AccAthl）。AccTrea 被证明是一种有效的工具，可以测量空间时间参数，如步长（有效性组内相关系数（ICC）= 0.94；可靠性 ICC = 0.92）、步时（有效性 ICC = 0.95；可靠性 ICC = 0.96）和步频（有效性 ICC = 0.95；可靠性 ICC = 0.96）。在跑步过程中，峰值加速度冲击变量的左（可靠性 ICC = 0.88）和右（可靠性 ICC = 0.85）腿均具有很高的可靠性，而峰值冲击不对称性的有效性适中（ICC = 0.55）。这些结果表明，AccTrea 系统是评估空间时间变量的有效可靠方法，也是测量跑步过程中加速度冲击的可靠工具。
