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The location of the tibial accelerometer does influence impact acceleration parameters during running
Authors:Angel Gabriel Lucas-Cuevas  Alberto Encarnación-Martínez  Andrés Camacho-García  Salvador Llana-Belloch  Pedro Pérez-Soriano
Institution:1. GIBD, Department of Physical Education and Sports, University of Valencia, Valencia, Spain;2. Faculty of Physical Activity and Sports Sciences, Catholic University of Murcia, Murcia, Spain;3. Grupo de Comunicaciones Aplicadas a Redes Telemáticas, Departamento de Comunicaciones, Universitat Politècnica de València, Alcoy, Spain
Abstract: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–1 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.
Keywords:Tibial acceleration  shock attenuation  frequency analysis  deceleration  accelerometry
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