Lucas-Cuevas Angel Gabriel, Encarnación-Martínez Alberto, Camacho-García Andrés, Llana-Belloch Salvador, Pérez-Soriano Pedro
a GIBD, Department of Physical Education and Sports , University of Valencia , Valencia , Spain.
b Faculty of Physical Activity and Sports Sciences , Catholic University of Murcia , Murcia , Spain.
J Sports Sci. 2017 Sep;35(17):1734-1738. doi: 10.1080/02640414.2016.1235792. Epub 2016 Oct 3.
Tibial accelerations have been associated with a number of running injuries. However, studies attaching the tibial accelerometer on the proximal section are as numerous as those attaching the accelerometer on the distal section. This study aimed to investigate whether accelerometer location influences acceleration parameters commonly reported in running literature. To fulfil this purpose, 30 athletes ran at 2.22, 2.78 and 3.33 m · s with three accelerometers attached with double-sided tape and tightened to the participants' tolerance on the forehead, the proximal section of the tibia and the distal section of the tibia. Time-domain (peak acceleration, shock attenuation) and frequency-domain parameters (peak frequency, peak power, signal magnitude and shock attenuation in both the low and high frequency ranges) were calculated for each of the tibial locations. The distal accelerometer registered greater tibial acceleration peak and shock attenuation compared to the proximal accelerometer. With respect to the frequency-domain analysis, the distal accelerometer provided greater values of all the low-frequency parameters, whereas no difference was observed for the high-frequency parameters. These findings suggest that the location of the tibial accelerometer does influence the acceleration signal parameters, and thus, researchers should carefully consider the location they choose to place the accelerometer so that equivalent comparisons across studies can be made.
胫骨加速度与多种跑步损伤有关。然而，将胫骨加速度计附着在近端的研究与将加速度计附着在远端的研究数量相当。本研究旨在调查加速度计的位置是否会影响跑步文献中通常报道的加速度参数。为实现这一目的，30名运动员分别以2.22、2.78和3.33米/秒的速度跑步，将三个加速度计用双面胶带附着，并根据参与者的耐受程度紧固在额头、胫骨近端和胫骨远端。针对每个胫骨位置计算时域参数（峰值加速度、冲击衰减）和频域参数（峰值频率、峰值功率、信号幅度以及低频和高频范围内的冲击衰减）。与近端加速度计相比，远端加速度计记录到的胫骨加速度峰值和冲击衰减更大。在频域分析方面，远端加速度计提供的所有低频参数值更大，而高频参数未观察到差异。这些发现表明，胫骨加速度计的位置确实会影响加速度信号参数，因此，研究人员应仔细考虑选择放置加速度计的位置，以便能够在不同研究之间进行等效比较。
