Abstract
The objective of the study was to examine the level of strength fitness indicators of 10-year-old boys who do Kyokushin Karate, and experimentally test the effectiveness of the impact of play techniques on the dynamics of strength development.
 Materials and methods. The study involved 40 10-year-old boys. The children and their parents were informed about all the features of the study and gave their consent to participate in the experiment. To achieve the objective set, the following research methods were used: analysis of scientific and methodological literature, pedagogical testing, and methods of mathematical statistics for processing research results.
 Results. There were the biggest changes in the results of the tests “Standing long jump” by 15.9% (р < 0.001), “Sit-ups in 30 s” by 16.0% (р < 0.001), “Pull-ups” by 18.3% (р < 0.001), and “Bent arm hang” by 15.6% (р < 0.001). The experimental group boys’ result of the “Standing long jump” changed from low to above average. The lowest increase in results was observed in the “Right hand grip test” by 7.2% (р < 0.001), “Left hand grip test” by 6.9% (р < 0.001), and“Push-ups” by 11.8% (р < 0.001).
 Conclusions. The initial level of the boys’ strength fitness is sufficient and conforms to age norms. Most of them had an average – 30.36%, an above average – 19.64%, and a high – 23.21% level of strength abilities development. The data obtained give reason to recommend that teachers and coaches use active games aimed at developing strength. As a result of using play load (5 games, 3 repetitions with rest intervals of 40 s), there was a statistically significant increase in strength indicators (р < 0.001).
Highlights
The objective of the study was to examine the level of strength fitness indicators of 10-year-old boys who do Kyokushin Karate, and experimentally test the effectiveness of the impact of play techniques on the dynamics of strength development
The data obtained give reason to recommend that teachers and coaches use active games aimed at developing strength
Most of them had an average – 30.36%, an above average – 19.64%, and a high – 23.21% level of strength abilities development. 11.43% of the boys performed the set of tests at a low level, 15.36% – at a below average level
Summary
Martial arts have a special educational potential in developing positive models of behavior and moral values that can help reduce aggression in society (Augustovicova, Argajova, Rupcik, & Thomson, 2020; Cynarski, 2019; Cynarski & Niewczas, 2019). Kotarska, Nowak, Szark-Eckardt and Nowak (2019), Greco, Fischetti, Cataldi, and Latino (2019) found a positive correlation between martial arts, especially if they are practiced at a competition level, and healthy behaviors and a higher level of quality of life self-assessment.Researchers have long proven the great potential of using a play-based approach in physical education (Khudolii & Marchenko, 2007; Marchenko, 2008, 2010; Nikitenkova & Marchenko 2017) and sport training (Korotkov, 1971; Alabin, Strashinskiy, Solovtsov, & Gavrilov, 1992; Slastina, Kravchuk,& Bybel, 2019). Martial arts have a special educational potential in developing positive models of behavior and moral values that can help reduce aggression in society (Augustovicova, Argajova, Rupcik, & Thomson, 2020; Cynarski, 2019; Cynarski & Niewczas, 2019). Since active games are a mixed (cyclic and acyclic) activity, it is mainly dynamic, speed and strength in nature. Such actions as moving on the tatami, performing various kicks, defensive actions against an opponent’s attack require a significant development of such a physical quality as strength
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