Speed-accuracy tradeoff in aimed ball kicks: a Fitts' law perspective

Hensing, S.J. (Sjoerd) (2013) Speed-accuracy tradeoff in aimed ball kicks: a Fitts' law perspective. thesis, Human Movement Sciences.

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Abstract

The lawfulness of the speed-accuracy tradeoff has been proven in different fields of research. Fitts' law is the most generally known model for the speed-accuracy tradeoff. The penalty kick is often used to explain the model of speed-accuracy tradeoff. Nevertheless, Fitts' law has never been validated for aimed ball kicks, such as the penalty kick. In the current study the speed-accuracy tradeoff was investigated for aimed ball kicks, from a Fitt's law perspective. In addition an anxiety manipulation was conducted, in order to see if this would affect the speed-accuracy tradeoff. 9 amateur football players (aged 22 ± 1.8 years) participated in the experiment. Participants had to perform 84 aimed ball kicks, directed at three different targets (Target widths = 1,50m, 0,75m and 0.375m). Ball velocity and accuracy data were collected using video analysis. Furthermore, the participants were given verbal instruction; manipulate the participants in either an approach or avoidance behavioral state. MRF-3 and CSAI-2R questionnaires were used to acquire the level of anxiety. Repeated measures ANOVA showed significant differences in ball velocity for the three different target widths (p < 0.05), thereby validating Fitts' law for aimed ball kicks. No significant differences were found for accuracy (p > 0.05). Paired samples t-test of the outcome variables of the questionnaires revealed no difference between different verbal instructional manipulations (p's > 0.05). Results confirmed the Fitts' law for aimed ball kicks. Findings indicated that players should aim at large targets, thereby increasing their ball velocity, since the accuracy is not negatively affect by the increase in target width. Keywords: Fitts' law, aimed ball kick, speed-accuracy tradeoff, penalty kick

Item Type:	Thesis (Thesis)
Supervisor name:	Supervisor and Poel, Dr. Harjo J. de and Center for Human Movement Sciences, University Medical Centr and University of Groningen
Faculty:	Medical Sciences
Date Deposited:	25 Jun 2020 10:56
Last Modified:	25 Jun 2020 10:56
URI:	https://umcg.studenttheses.ub.rug.nl/id/eprint/1632

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