A comparative study of some biomechanical variables and the electrical activity of the legs in the crushing hitting of the front and back areas of volleyball

الملخص

The aim of this study is to determine the most important differences between the crushing hitting of the front and rear areas in volleyball in some biomechanical variables and the electrical activity of the two legs, as each physical movement has special requirements in terms of the apparent form of movement or through the causes of movement, and the idea of ​​the study came to identify the Both types of movement requirements and comparison between them in the implementation of two forms of performance in the smash in volleyball.

In this study, the variables (thrust force, kinetic energy and launch angle) were adopted as biomechanical variables that are closely related to the type of performance, in addition to the indicators of the activity peak and the area under the curve were among the most important variables related to the electrical activity of the muscles targeted in the research, namely (quadfemoral and calf twins). ) to the right and left.

The study sample included the six players of the Babylon University volleyball team, during which the survey method was used to determine the research variables. The waterwheel) left and right using remote electrical activity recording technology and via Bluetooth.

The study came out with a set of results, the most important of which is that there are significant differences in the two variables of thrust force and starting angle, and no differences were recorded in kinetic energy, in addition to that the electrical activity peak index did not record any significant differences, in contrast to the area under the curve indicator, which came with clear moral differences between Configurable smash hit performance.