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Upper limb and trunk strength asymmetry and relationships in young elite soccer players
Haisová, Linda ; Hank, Mikuláš (advisor) ; Kunzmann, Egon (referee)
This diploma thesis aimed to evaluate the level of upper limb strength asymmetry between the dominant and non-dominant side and trunk rotation strength in young soccer players, then to compare this relationship with respect to strength performance. The research population consisted of 18 young players in the U16 age group who play soccer at an elite level. Players participated in isometric upper extremity and trunk strength testing. Data collection of isometric upper limb grip strength (Handgrip) parameters was performed using a digital handheld dynamometer (Takei, A5401, Japan). A Humac Norm Cybex isokinetic dynamometer (CSMi, Humac Norm, USA) in isometric mode was used to test trunk strength in rotation. The results of the trunk rotation force values in favor of the dominant side averaged 19.83 ± 3.47 kg. For the non-dominant side, players achieved average results of 19.17 ± 3.33 kg. The T-test results showed that the dominant side of the body achieved significantly higher results in absolute trunk rotation strength with a value of p = 0.035, also in relative strength with a value of p = 0.032. In the Handgrip, the average result value on the dominant side was found to be 41.76 ± 8.63 kg. The non-dominant side achieved a mean grip strength value of 39.68 ± 5.79 kg. The results of the T-test...
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