A brief summary of the research
The percentage of the contribution of some working muscles of the striking arm in terms of the electrographer in the accuracy index of the straight smash hit in volleyball
Prof. Majid Khada Yakhsh Asad 1, Eng. Nabard Ahmed Ismail 2
College of Physical Education/University of Sulaymaniyah 1
Faculty of Physical Education/ Karmian University 2
Abstract: The research aims to identify:
1- The values of the electric painter variables, and the accuracy index of the straight smash hit for the players of the Peshmerga Club.
2- The relationship of the values of the electrocardiogram variables of the working muscles of the striking arm with the accuracy index of the straight smash hit for the Peshmerga club players.
3- The percentage of the contribution of the values of the electric painter variables of the working muscles of the striking arm to the accuracy index of the crushing beating of the Peshmerga club players.
The research community was determined from the players of the Peshmerga volleyball club who qualified in the Iraqi Elite League, which numbered (17) players, and (8) players were selected from the smash hitters from the high position No. (4) in the intentional way, in order for all players to continue training and participate in experimental matches In preparation for the Elite League for the 2015/2016 season, and because the nature of the research depends on their choices, as their percentage amounted to (47.06%), as well as choosing (3) players in a random manner by lottery as a sample for the pilot experiment, and (6) players were excluded, who are free players, prepared players and focus players (Center), the researchers used the descriptive survey method in a relational relationship style, as for the means of data collection, the researchers used an (EMG) device and a camera to measure the accuracy of the straight smash, and the statistical bag (SPSS) was adopted to analyze the data, and several conclusions were reached, including the following: The indicators of the electrograph of the striking muscles of the studied arm have varying relationships with the accuracy index of the research sample. The indicators of muscle activity (peak, time) of the biceps brachii muscle achieved a significant relationship with the accuracy index. In the research sample, the muscular activity index (time) of the carpal flexor ulnar muscle had a significant correlation with the accuracy index of the research sample.
Key words: contribution ratio – working muscles of the striking arm – electrogram – accuracy of straight smash hit – volleyball.