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- W2758762289 abstract "Sprinting is a cyclic motor activity which consists of repetitive running steps and the horizontal speed of the sprinter’s step is a product of the length and frequency of the step. The main aim of this research is to determine diff erences between girls and boys of a younger school age in kinematic parameters of running at maximum speed (the frequency of steps, the length of steps, the duration of the contact and the fl ight)and the results in 50 metre running. The sample of examinees consisted of 150 male and female pupils from the fi rst and second form of a primary school in Pula (70 male and 80 female pupils). The average male pupils’ age was 8.12±0.63, their height was 133.56±7.66 centimetres, and their body mass was 31.42±8.05 kilogrammes. The average female pupils’age was 8.08±0.61, their height was 132.05±6.44 centimetres, and their body mass was 29.91±7.25 kilogrammes. The sample of variables consisted of variables used for determining the kinematic parameters of the sprinter’s running in the phase of the maximum speed (the frequency of steps, the length of steps, the duration of the contact and the fl ight) and the 50-metre running time. The kinematic parameters of the sprinter’s running in the phase of maximum speed have been collected by applying the Opto jump technology (Microgate, Italy) which was set on the segment between the 15th and the 35th metre, on a length of 20 metres. The 50-metre running time has been measured by the system for electronic measuring. The basic descriptive parameters have been worked out, while the differences between girls and boys have been analyzed by the univariant analysis of variance and discriminant analysis. The length of steps is a variable for which there are not statistically signifi cant diff erences between boys and girls although girls achieve averagely higher values. The duration of the contact is longer for girls for 6.6 percent compared to boys, while the length of fl ight is longer for 10 percent. On average, girls have a 7.2 percent lower frequency of steps when compared to boys. Boys achieve higher values for the 50 metre running time variable, while boy’s average running time is 4.8 percent faster compared to girls. The obtained results confirm former knowledge according to which boys achieved better results in 50-metre running time, a higher frequency of steps, a shorter duration of the fl ight phase and a shorter contact of the foot with the ground, while girls achieve averagely higher values of the length of steps" @default.
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- W2758762289 date "2013-01-01" @default.
- W2758762289 modified "2023-10-10" @default.
- W2758762289 title "Differences between girls and boys in kinematic parameters of sprinter`s running" @default.
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