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A perception-action coupling type of control in long jumping
G Montagne1, S Cornus, D Glize
1Université de la Mediterranée, Faculté des Sciences du Sport, UMR Mouvement & Perception, 163 Avenue de Luminy, CP 910, 13288 Marseille Cedex 9, France. montagne@laps.univ-mrs.fr
Abstract:
The authors' goal was to identify the control mechanisms used by long jumpers (N = 6) to precisely position their foot at the board. In addition to the intertrial method usually used in previous research, an original method based on a trial-by-trial analysis was also implemented. If the approach to the board in long jumping encompasses two distinct sequences separated by a key step that marks the initiation of visual control, then a trial-by-trial analysis should reveal those sequences, regardless of the amount of adjustment: The step number at which regulation is initiated should be the same irrespective of the amount of adjustment. If, in contrast, a perception-action coupling mechanism operates, then the step number at which regulation is initiated should be a function of the amount of adjustment: A linear relation between those 2 variables should emerge. The results of the present study are compatible with continuous control mechanisms based on a perception-action coupling.
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