TITLE

Trunk Inclination Estimate During the Sprint Start Using an Inertial Measurement Unit: A Validation Study

AUTHOR(S)
Bergamini, Elena; Guillon, Pélagie; Camomilla, Valentina; Pillet, Hélène; Skalli, Wafa; Cappozzo, Aurelio
PUB. DATE
October 2013
SOURCE
Journal of Applied Biomechanics;Oct2013, Vol. 29 Issue 5, p622
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The proper execution of the sprint start is crucial in determining the performance during a sprint race. In this respect, when moving from the crouch to the upright position, trunk kinematics is a key element. The purpose of this study was to validate the use of a trunk-mounted inertial measurement unit (IMU) in estimating the trunk inclination and angular velocity in the sagittal plane during the sprint start. In-laboratory sprint starts were performed by five sprinters. The local acceleration and angular velocity components provided by the IMU were processed using an adaptive Kalman filter. The accuracy of the IMU inclination estimate and its consistency with trunk inclination were assessed using reference stereophotogrammetric measurements. A Bland-Altman analysis, carried out using parameters (minimum, maximum, and mean values) extracted from the time histories of the estimated variables, and curve similarity analysis (correlation coefficient > 0.99, root mean square difference < 7 deg) indicated the agreement between reference and IMU estimates, opening a promising scenario for an accurate in-field use of IMUs for sprint start performance assessment.
ACCESSION #
91999689

 

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