RELATIONSHIPS BETWEEN EXPLOSIVE POWER AND ISOMETRIC STRENGTH OF KEY UPPER AND LOWER LIMB MUSCLES IN YOUNG ADOLESCENTS
DOI:
https://doi.org/10.24193/subbeag.70.sp.iss.1.08Keywords:
explosive power, motric potential, teenagers, sport selection, muscleAbstract
Introduction: Developing lower limb strength can promote improved sports performance, as well as reduce the risk of injury in sports activities. Objective: The research aimed to discover the links between the explosive power and isometric strength of the lower and upper limbs of non-practicing teenagers. Materials and methods: The explosive power and isometric strength of the lower and upper limbs were tested on a group of 49 adolescents (21 girls, 28 boys) aged between 15 and 18 years, from the N-E region of Romania. The Squat Jump, Countermovement Jump and Abalokov’s Jump protocols were applied to determine the explosive power of the lower limbs. The isometric strength of the upper limbs was tested using the pressure and traction protocols of a portable dynamometer, and to determine the strength of the leg adductors, the pressure test was applied, using the same dynamometer. Results: Statistically significant associations (p<0.05) were found between explosive power and isometric lower limb strength in the entire group, as well as between isometric arms strength and explosive lower limb power. Links were also found between isometric arms and legs strength. Regarding gender, legs adductors and arms strength determined by traction were correlated among girls. No significant correlations were found for boys’ values. Conclusions: The study concluded that the strength of the lower limb muscles involved in vertical jump testing can influence its performance. This aspect was determined predominantly among the common group, so additional studies are needed to support the hypothesis in the case of each gender.
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