The effect two vaulting conditions has on the maintenance of linear momentum and touch down and take-off joint characteristics
University of Wales
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This study aimed to identify the touch down and take-off characteristics of the hurdle step, springboard and vault contact phases and the effect they had on the rate of decay of linear momentum when two degrees of handspring vaults were considered. Horizontal ground reaction force data was collected on the hurdle step to identify braking force and three dimensional kinematic data was collected using a motion analysis system (CODA) to identify joint angles and velocity. Four female participants were used to identify the touch down and take-off characteristics. Each participant performed eight of two conditions of handspring preparation vaults which differed in difficulty. Results showed a significant difference in the loss of linear momentum between the two conditions, with percentage differences ranging between 4.29% and 1.33% for the participants. The biggest loss of linear momentum was found at the springboard phase which was found to be due to the transferral of linear momentum to angular momentum at this stage. The knee joint was found to be the most variable between the two conditions and between participants, implying that it is most influenced by vaulting difficulty and this inconsistency influences an increased loss of linear momentum.
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