Kinematic determinants of early acceleration in field sport athletes.

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Show simple item record Murphy, AJ Lockie, RG Coutts, AJ 2009-12-21T03:53:41Z 2003-12
dc.identifier.citation Journal of sports science & medicine, 2003, 2 (4), pp. 144 - 150
dc.identifier.other C1 en_US
dc.description.abstract Acceleration performance is important for field sport athletes that require a high level of repeat sprint ability. Although acceleration is widely trained for, there is little evidence outlining which kinematic factors delineate between good and poor acceleration. The aim of this study was to investigate the kinematic differences between individuals with fast and slow acceleration. Twenty field sport athletes were tested for sprint ability over the first three steps of a 15m sprint. Subjects were filmed at high speed to determine a range of lower body kinematic measures. For data analysis, subjects were then divided into relatively fast (n = 10) and slow (n = 10) groups based on their horizontal velocity. Groups were then compared across kinematic measures, including stride length and frequency, to determine whether they accounted for observed differences in sprint velocity. The results showed the fast group had significantly lower (~11-13%) left and right foot contact times (p < .05), and an increased stride frequency (~9%), as compared to the slow group. Knee extension was also significantly different between groups (p < .05). There was no difference found in stride length. It was concluded that those subjects who are relatively fast in early acceleration achieve this through reduced ground contact times resulting in an improved stride frequency. Training for improved acceleration should be directed towards using coaching instructions and drills that specifically train such movement adaptations.
dc.format Electronic-eCollection
dc.language eng
dc.subject Sprint performance, first step quickness, running speed, Sport Sciences
dc.subject Sprint performance; first step quickness; running speed; Sport Sciences
dc.title Kinematic determinants of early acceleration in field sport athletes.
dc.type Journal Article
dc.parent Journal of sports science & medicine
dc.journal.volume 4
dc.journal.volume 2
dc.journal.number 4 en_US
dc.publocation Bursa, Turkey en_US
dc.identifier.startpage 144 en_US
dc.identifier.endpage 150 en_US BUS.School of Leisure, Sport and Tourism en_US
dc.conference Verified OK en_US
dc.for 110602 Exercise Physiology
dc.for 110601 Biomechanics
dc.for 1106 Human Movement and Sports Science
dc.personcode 980017 en_US
dc.personcode 021277 en_US
dc.personcode 020100 en_US
dc.percentage 40 en_US Human Movement and Sports Science en_US
dc.classification.type FOR-08 en_US
dc.staffid 020100 en_US
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Health
pubs.organisational-group /University of Technology Sydney/Strength - Health Services and Practice Research
pubs.organisational-group /University of Technology Sydney/Strength - Health Technologies

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