BRG.LifeMOD™ modeling and simulation of swimmers impulse during a grab start

Guillaume Agnesina (1) , Redha Taiar (1) , Nicolas Houel (2) , Kevin Guelton (3) , Philippe Hellard (4) , Yuli Toshev (5)

1 GRESPI - Groupe de Recherche en Sciences Pour l'Ingénieur - EA 4694
2 LMS - Laboratoire de mécanique des solides
3 CRESTIC - Centre de Recherche en Sciences et Technologies de l'Information et de la Communication - EA 3804
4 IRMES - EA 7329 - Institut de recherche biomédicale et d’épidémiologie du sport
5 Institute of Mechanics and Biomechanics, Bulgarian Academy of Sciences, Sofia, Bulgaria

The main aim of the study is to propose an approach for 3D modeling and simulation of swimmers impulse during a grab start. Four national level swimmers were investigated. For every swimmer, 3D model was generated in BRG.LifeMOD TM on the base of individual morphologic parameters and kinematic data obtained by high speed video camera and passive markers attached at the level of each important articulation. The proposed approach allows predicting swimmer's joint moments for each important articulation during the impulse phase of the grab start and to analyze the segmental coordination for each studied swimmer in order to optimize the performance. The model was successfully validated by comparing the predicted speed and power values with experimental ground reactions data collected in situ.

Mots clés: 3D modeling; swimming; grab start; kinematics; joint moments

Domaines: Biomécanique [physics.med-ph]

Guillaume Agnesina, Redha Taiar, Nicolas Houel, Kevin Guelton, Philippe Hellard, et al.. BRG.LifeMOD™ modeling and simulation of swimmers impulse during a grab start. 9th Symposium on 3D Analysis of Human Movement, Jun 2006, Valenciennes, France. ⟨hal-02291512⟩