JOURNAL OF SPORT SCIENCES

The volleyball game is one of the important sports games that occupied a clear
place among most countries of the world because of its excitement and
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excitement and the multiplicity of basic skills in it. Therefore, it has become
necessary for experts and workers in this field and all those involved in the
education and training of this game to prepare, plan and implement from In
order to develop the level of this game .
The aim of the research is to prepare similar exercises to play in specific areas
and to identify the effect of exercises in developing accuracy and some of the
kinematic variables of the two front-facing transmitter skills and the
overwhelming frontal beating of the volleyball applicants. Of advanced players
in volleyball

To study the fundamental aspects of the requirements of any movement we
must move away from subjective estimates in the evaluation of movements
because scientific sources emphasize the essential aspects to be studied that
relate to the time of movement, distance, speed and the path of the center of
body mass, and that the most important biomechanical variables accompanying
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the performance of the individual blocking wall skill is the time timing To rise
against the competing player in order to reach in time to the height of the ball
the moment it struck and stop its passage to the playing field or reduce its
speed and start building a new attack in favor of the defending team, therefore
the player who is performing the wall-blocking skill must die The player
carrying out the overwhelming attack and following his movement accurately
and precisely the moment of the rise and choosing the appropriate time to rise
against the opponent and block the ball and prevent it from crossing into his
court.
The research problem lies in the lack of success of the blocking wall skill in the
games and stopping the quick attack of the opposing team and obtaining a
direct point or reducing the speed of the next ball from an overwhelming blow
and benefit in building the correct attack, the researcher used the descriptive
approach because it is one of the most appropriate approaches to the nature
of the research problem, and a sample was represented The research of the
players of the team of the College of Physical Education and Sports Science
Diyala University in volleyball for men for the year (2018-2019) and the
researcher used the (EXCEL) program to process the data because the SPSS
program does not deal with the number (0), and the most prominent
conclusions were that the time differences ranging from (0.00) seconds to (0
10. Leads to the point being decided directly or the return of the ball to the
opposing team's field or returns to the stadium after touching the ball to the
fingers of the hand and reducing his strength and starting to build an attack, as
well as the time differences that range from (0.13) seconds to (0.17) seconds
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the player cannot There is a point settlement because the time difference
between it and the striker's player is large, leading to the passage of the ball
before reaching it .

Using of instruments and tools will help in the training process
,whereas the recently scientific development adopted the research
using force platform as new training method in order to develop
explosive and rapid forces where the researcher dealt with the
problem of has used these new methods in training to develop the
beginning stages of 100M race game of the sample of the research.
The exercises had dealt with pre and within discussion period
in order to develop this method for beginning performance stages of
the game as the important element to achieve the objectives of the
sample of the research ..
The researcher has used speed training and maximum force and
rapid speed as development components for this game in which she
used training of this method by using force platform and developing
explosive and rapid forces and maximum speed with the sample of
the research to achieve the objectives of the sample of the research ..
The researcher's verifications depended on other new methods
for other games in order to develop some games capabilities of the
sport of athletics and other games

The importance of the study stems from the importance of the referee
needs energy and recognition of the values of psychological energy that are
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related to the decisions of the referee and the possibility of acting
correctly during the leadership of the game and ways of treating it to get the
best results, which contribute to giving a picture of how the referees perform
their duties according to the sources of motor energy, psychological and
physical, which directly affects the level of judgment and the results of the
games. It included 12 referees representing a percentage of the amount
(5,263%) of the total. from the original search community.
The researcher used the means of collecting many information, including
Arab and foreign sources, interviews and psychological energy meters, which
consists of (37) paragraphs and includes (6) dimensions, and was identified
tests for measuring the elected physical abilities, which obtained an agreement
ratio of (80%) which is the speed of transition and the speed and speed and
strength characterized by speed, agility and longness. The researcher
conducted tribal tests for the research sample for the measure of psychological
energy and physical abilities and prepared a method for mobilization and
application during the duration of the competitions was conducted after tests,
and from the conclusions reached that the method of psychological
mobilization was effective in the development of physical abilities and
psychological energy in the members of the research sample

The importance of the research lies in the fact that the implementation of physical abilities tests is measured by an electronic device characterized by high accuracy in determining the physical levels accurately and with a high objectivity that is not possible for error and bias in setting the degree, and the aim of the research was to design an electronic device to measure some physical abilities of basketball players and find criteria and levels for the sample of the research, and use The researcher described the descriptive


method in the survey method, and the sample of the research team is the 53 players of Shahrban club in basketball. Dimensions factor bias and error, can
be measured by the physical abilities of any age group surveyed and all athletes regardless Nadr specialization

The present study in cludes chapter one study identi fication This chapter shows the introduction and important of the study also con tains the problem of the study. and Aims-Hypo theses of the study.chapter three Method and procedures of the syudy :The experimental method was used in this study and the samples inclnde seventeen youth players.Chapter four Result and Discussion :This chapter contains results and discussion to achieve the aims and hypo theses of the study.Chapter five conclusions and Recommendations
Conclusions: the method which contains special exercises has agreat effect on the performance of the experimentalgroup.Recommendations: The coaches be interested in using training progeams that include exercises of mussuler strength during training module .
, and determined the research sample by the intentional method that included the fourth preparatory students, as exercises were applied during the educational curriculum that lasted for (12) weeks with two units and a time (90 minutes) per unit according to the conceptual fluency using the exercises, After obtaining the raw results, they were statistically treated, and the researcher concluded that the special exercises had a positive and clear effect in developing the most important aspects of attention and training passing &shooting in water polo in theresearchgroup.

The importance of research comes through following modern scientific methods and the correct scientific method in progression and transition by learning from easy to difficult and the introduction of suspense factor through cases similar to play situations that may increase students' learning better than the method used (the command), the research problem lies in the weakness of my skill Rolling and scoring football lounges for the intermediate stage and through the researcher's experience because he has practiced the game for many years and studied the game in schools for more than (10) years has been able to diagnose this weakness and diagnose its cause, which is the survival of old methods that have become incompatible with the changes The proceeds or development of the game and the educational process.
The researcher used the experimental approach to suit the goals and problem of the research, and the people (A, B, C, D) of the first intermediate class represented a research community of (157) students, and by random drawing method using the lottery process, Division (B) was identified to represent the experimental group that You will learn by skillful exercises in a method of problem solving, and Division (A) represents the control group that will learn in the manner followed by the school. Therefore, the total number of the research sample in the main experiment was (40) students, each of which had a share of (20) students, and the trial period lasted (8) weeks With (16) educational units, after completing the experiment, the following tests were conducted Yeh were processed statistically. The results were obtained, and in light of them




, the researcher concluded the following: that the exercises prepared in a problem-solving method had a very big and effective effect in learning the skills of rolling and scoring football in the halls of the first-year middle class students, that the problem-solving method is better than the traditional (command) method in learning The dynamic, and the researcher recommended the following: the use of exercises in a problem-solving method in the lesson of physical education in learning the skills of rolling and scoring football in lounges for students of the first intermediate grade, benefit from the problem-solving method in investing time and effort in the educational process

Developed countries seek to prepare their athletes to reach the best achievements through careful selection of these athletes and based on a scientific and accurate selection process, which must be subject to scientific scientific standards through the capabilities of these athletes and the knowledge of their physical capabilities to help coaches choose the appropriate players for their effectiveness in order to reach The best sports achievements, and physical abilities are among the most important requirements for players of teams games (handball, soccer, and basketball) because they are relatively close in achieving the performance required of them on the field, so workers in this field must choose the player Between according to specific benchmarked criteria that qualify them to accomplish the skillful and physical performance according to the ambition sought by workers in the sports field, and the importance of the current research lies in developing a correct scientific mechanism for selecting players of the difference games based on testing and measuring objectively rather than self-selection, the selection process for these games Need to find physical limitations based on the proper scientific method for selecting the players, and the desire of the researcher to contribute to solving this problem. He wanted to find scientific formulas for the adoption of levels of reference for some physical abilities as an indication for the selection of players with high preparations Physically speaking, we are qualified to achieve high achievements with less effort, money and time. As for the goals of the research, it is necessary to find levels of reference for reference as an indication of the selection of teams for the teams of Diyala schools. As for the fields of research, the human field included primary school teams in Benin for the academic year 2019/2020, while the temporal field for the period from 11/11/19 201 to 25/2/2020 as for the spatial field, the closed hall for Diyala education, and the researcher concluded the criteria for a reference for research tests ( Transition speed, explosive strength, flexibility),






and the results of the tests were acceptable in relation to the age of the research sample, and the researcher recommends the use of these criteria by physical education teachers in selecting players for their school teams.