The Roles of width of targets and the amplitude of movement on movement velocity in simple and complex tasks
Poster Presentation XML
Authors
1Department of Motor Behavior, Faculty of Sport Sciences, Al-Zahra University
2Department of Motor Behavior, Faculty of Sport Sciences, Hakim Sabzevari University
Abstract
The purpose of this research was to determine roles parameters are more effective in movement velocity. width of targets and the amplitude of movement that contributed in index of difficulty variables according to logarithm equation speed and accuracy trade- off of Fitts’ law in two level of simple and complex tasks. A number of 56 right handed university students were selected through convenience sampling and were randomly assigned to four groups (n=14) which differed in type of task the half participants performed simple tasks and half participants performed complex tasks.
The method was quasi-experimental. Fitts’ task were designed as software and appeared on a computer monitor.The aim of this task was maximum movement speed and accuracy. The subjects practiced 64 trails in the acquisition phase by different ID in each type of task performed. The data were analyzed t test (P<0.05).
The results showed in each of two experimental (simple and complex tasks) there were the effective width of targets and the amplitude of movement on average movement time. In fact difficulty indices and compound of these indices are key factor in motor control.
So that there was significant difference in average movement time by width of targets and the amplitude of movement. These findings suggest, tasks that depend on from the principal of speed and accuracy, proportion width of targets and the amplitude of movement is effective factor in movement control. Speed and accuracy scales are important factor in acquisition in movement and motor learning
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