Reaction Time and Spatiotemporal Variables as Markers of Sprint Start Performance
American Journal of Sports Science
Volume 7, Issue 3, September 2019, Pages: 121-126
Received: Jul. 29, 2019;
Accepted: Aug. 19, 2019;
Published: Sep. 3, 2019
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Ioannis Kesoglou, School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece
Athanasia Smirniotou, School of Physical Education and Sport Science, National and Kapodistrian University of Athens, Athens, Greece
The purpose of the present study was to examine both the within-day and between-day reliability of sprint start variables. The reaction time and the premotor time (PMT) were used as markers of the reactive function. Additionally, 3-m time, first-step flight time, first-step length and first-step velocity were utilized as spatiotemporal markers of the sprint start. Prior to the reliability study, an extensive number of sprint start trials were performed to familiarize the participants. A repeated measures analysis of variance, intra-class correlation coefficient (ICC) and Cronbach’s alpha reliability coefficient were used to assess the within-day and between-day reliability. The coefficient of variation (CV%) was evaluated to determine the within-participant variation. Both the within-day and between-day spatiotemporal markers showed higher reliability with lower variability from the reactive function markers. This study shows that well-familiarized participants can perform a reliable sprint start performance both within a day and between days. We conclude that the reactive markers have a high variability within a day and between days and require further research to determine their dynamic role in the sprint start action. Therefore, spatiotemporal markers provide a more valid method of sprint start assessment.
Reaction Time and Spatiotemporal Variables as Markers of Sprint Start Performance, American Journal of Sports Science.
Vol. 7, No. 3,
2019, pp. 121-126.
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