Electrical muscle activity and its relationship to the motor transmission of the smash serve skill of volleyball players

Abstract

The main objectives of the study are to identify the electrical muscle activity as well as to identify
the motor transmission and to find the relationship between the electrical muscle activity and the
motor transmission of the ace skill of volleyball players, as well as to identify the contribution rates
of the muscles in the phases of the motor performance of the skill (the approach phase, the rise
phase, the hitting phase ), as well as the contribution rates of the biomechanical and angular variables
to the skill, and the importance of the study and the need for it is highlighted through the importance
of studying muscle activity and some biomechanical and angular variables to know the strengths and
weaknesses in the technical performance of the skill of the ace in volleyball and the relationship of
electrical activity to those biomechanical variables due to the importance of the skill of serving in
volleyball. The Plane .
With the rapid development that has included all sports activities in terms of their skill components,
it has become necessary for those working in the field of sports training to follow everything new.
The competition has demonstrated the importance of studying the skill components in a more
detailed manner to identify their precise characteristics and develop development methods with the
aim of reaching optimal performance.
The researcher chose the research sample intentionally and included (1) one player from the first
Iraqi national team. The study was conducted in the Games and Studies Hall of the College of
Physical Education and Sports Sciences at the University of Baghdad / Al-Jadriyah.
The researcher used an electromyograph (EMG 16 HANIE WIRLESS) device type (Mega ME6000)
as well as a 30 k/s frequency camera (Canon DVC32OW) to obtain muscle contribution rates as well
as to obtain the value of the biomechanical variables and angular variables related to the study. The
researcher used the program (SPSS) to process the values statistically, including the arithmetic mean,
standard deviation, percentage, skewness coefficient, kurtosis coefficient, Pearson correlation
coefficient “t,” ONE WAY ANOVA test, and least significant difference (LSD) test..