ReacTime System ni primeren za merjenje reakcijskega časa pri merjencih s slabim znanjem nizkega štarta

slovenian

2020

volume 68, issue 1/2

athletics   force plate   reaction time   sports   sprint start from starting block

Univerza v Ljubljani, Fakulteta za šport

In athletic competitions, testing and training, the ReacTime System (RTS) is used to measure reaction time. It has been observed that the measured reaction time is unexpectedly long in some measurements. In order to confirm our assumption that the reason for this lies in the different knowledge of sprint start technique from the start block, we conducted a study comparing reaction times measured with RTS and force plate (TP) in subjects with different sprint start technique knowledge. Twenty-three subjects participated in the study. Measurements were taken simultaneously using the RTS and the force plate. The division of subjects into two groups was made using a hierarchical method. T-test for dependent samples was used for comparison between RTS and TP, and t-test for independent samples was used to compare differences between groups. The correlation of the variables was calculated using the Pearson correlation coefficient. There were 7 subjects in the group with high rate of force development (VRFD) and 16 subjects in the group with low rate of force development (NRFD). Comparison of reaction time measured by RTS revealed that the VRFD group had a statistically significantly shorter reaction time than the NRFD group (P <0.001). In the VRFD group, the correlation between the reaction time measured by RTS and the reaction time measured by TP was statistically significant (P <0.001), while it was not statistically significant in the NRFD group (P = 0.893). Based on the results of our research, we can conclude that the RTS correctly measures the reaction time in subjects that are able to perform a sprint start from the start blocks well. For those who are not able to perform the sprint start from the starting blocks well, the RTS measures too long reaction time.

06.11.2024