TY - JOUR
T1 - Pattern recognition in cyclic and discrete skills performance from inertial measurement units
AU - Seifert, Ludovic
AU - L'Hermette, Maxime
AU - Komar, John
AU - Orth, Dominic
AU - Mell, Florian
AU - Merriaux, Pierre
AU - Grenet, Pierre
AU - Caritu, Yanis
AU - Hérault, Romain
AU - Dovgalecs, Vladislavs
AU - Davids, Keith
PY - 2014
Y1 - 2014
N2 - The aim of this study is to compare and validate an Inertial Measurement Unit (IMU) relative to an optic system, and to propose methods for pattern recognition to capture behavioural dynamics during sport performance. IMU validation was conducted by comparing the motions of the two arms of a compass, which was equipped with IMUs and reflective landmarks detected by a multi-camera system. Spearman's rank correlation tests showed good correlations between the IMU and multi-camera system, especially when the angles were normalized. Bland-Altman plot, root mean square and the normalized pairwise variability index showed low differences between the two systems, confirming the good accuracy levels of the IMUs. Regarding pattern recognition, joint angle and limb orientation was respectively studied for 25 m during breaststroke swimming and 10 m of indoor rock climbing in athletes of various skill levels. Pattern recognition was also conducted on a macroscopic parameter that captured inter-limb coordination. IMUs revealed the potential to assess movement and coordination variability between and within individuals from joint angle measures in swimming and limb orientation time-series data in climbing.
AB - The aim of this study is to compare and validate an Inertial Measurement Unit (IMU) relative to an optic system, and to propose methods for pattern recognition to capture behavioural dynamics during sport performance. IMU validation was conducted by comparing the motions of the two arms of a compass, which was equipped with IMUs and reflective landmarks detected by a multi-camera system. Spearman's rank correlation tests showed good correlations between the IMU and multi-camera system, especially when the angles were normalized. Bland-Altman plot, root mean square and the normalized pairwise variability index showed low differences between the two systems, confirming the good accuracy levels of the IMUs. Regarding pattern recognition, joint angle and limb orientation was respectively studied for 25 m during breaststroke swimming and 10 m of indoor rock climbing in athletes of various skill levels. Pattern recognition was also conducted on a macroscopic parameter that captured inter-limb coordination. IMUs revealed the potential to assess movement and coordination variability between and within individuals from joint angle measures in swimming and limb orientation time-series data in climbing.
KW - Coordination dynamics
KW - Inertial measurement unit
KW - Movement variability
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U2 - 10.1016/j.proeng.2014.06.033
DO - 10.1016/j.proeng.2014.06.033
M3 - Article
AN - SCOPUS:84903752998
SN - 1877-7058
VL - 72
SP - 196
EP - 201
JO - Procedia Engineering
JF - Procedia Engineering
ER -