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The resilience of natural interceptive actions to refractive blur

Mann, David, Abernethy, Bruce and Farrow, Damian (2010) The resilience of natural interceptive actions to refractive blur. Human Movement Science, 29 (3). pp. 386-400. ISSN 0167-9457

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Abstract

The impact of refractive visual blur on interceptive skill was examined for a series of highly-demanding striking tasks. Ten skilled cricket batsmen were required to intercept balls projected by either a ball projection-machine (medium-pace only) or cricket bowlers (two velocities; medium-pace and fast-pace) under each of four systematically varied visual conditions. Contact lenses were fitted to simulate increments in refractive blur (habitual, +1.00, +2.00, +3.00 D), with changes in interceptive performance evaluated on three concurrent measures of performance relevant to cricket batting (quality of bat–ball contact, forcefulness of bat-swing, and likelihood of dismissal). For the projection-machine condition, results replicate those reported previously (Mann, Ho, De Souza, Watson, & Taylor, 2007) with blur needing to reach +3.00 D before any significant decreases in performance were evident, a finding further replicated when facing bowlers of comparable velocity. The influence of blur on interception was found to interact with ball-velocity, with the increased temporal demands of fast-paced trials resulting in decreased performance becoming evident at a lower level of blur (+2.00 D). The findings demonstrate that even when presented with a situation replicating highly-demanding performance conditions, substantial degradation of visual clarity is possible before acuity is a limiting factor for interceptive performance.

Item Type: Article
Uncontrolled Keywords: ResPubID21116, myopia, sport, visual acuity, contact lenses, cricket
Subjects: Faculty/School/Research Centre/Department > Institute of Sport, Exercise and Active Living (ISEAL)
FOR Classification > 1106 Human Movement and Sports Science
SEO Classification > 970117 Expanding Knowledge in Psychology and Cognitive Sciences
Depositing User: VUIR
Date Deposited: 21 May 2012 01:58
Last Modified: 19 Jun 2012 06:33
URI: http://vuir.vu.edu.au/id/eprint/7039
DOI: https://doi.org/10.1016/j.humov.2010.02.007
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Citations in Scopus: 28 - View on Scopus

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