«Effectiveness of Types of Individual Defense Performance in Achieving Success Hossini Fatemeh1, Rezae Shirazi Reza1, Masuodi Nezhad Monire2, Rezaei ...»
International Research Journal of Applied and Basic Sciences. Vol., 3 (4), 891-895, 2012
Available online at http://www. irjabs.com
ISSN 2251-838X ©2012
Effectiveness of Types of Individual Defense Performance in Achieving Success
Hossini Fatemeh1, Rezae Shirazi Reza1, Masuodi Nezhad Monire2, Rezaei Rozita3
Department of Physical Education, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran
Department of Physical Education, Qaemshahr Branch, Islamic Azad University, Qaemshahr, Iran 3 Department of Physical Education, Science and Research Branch, Islamic Azad University, Tehran, Iran Corresponding Author: Hossini Fatemeh, Email: firstname.lastname@example.org ABSTRACT: The purpose of the study was to effectiveness of types of individual defense skill on performance in Football teams in premier league matches. The tournament includes double round-robin. Each team had to play seventeen matches at home and seventeen matches at away.
Thirty four matches of champion team had been analyzed for this study. Individual defense skill was one of the most fundamental tactic skills, which was developed and applied in Football. The individual defense tactics directly affect the team's ability to regain possession and create scoring opportunities. The finding of the study have conduct that the values of regression coefficient had higher positive relation between individual defense 7 scores and 8 scores on goal scoring performance. The values of regression coefficient had a negative role in execution between individual defense 0 score, 3 scores and 4 scores on goal scoring performance. It appears that individual defense's ability of teams to control the opposing team's movements will greatly affects on success in Football.
Keywords: Individual Defense Skill, Goal Scoring Performance, Possession, Scoring Opportunit Introduction Performance analysis have tended to focus on tactical and technical indicators and, in so doing, have contributed to our understanding of the physiological, psychological and tactical demands of many sports(Camille, 2006). Indicators provide simple information that can be used to describe and define a particular performance. But it was important to be careful over how the data was presented since, in isolation, these can give a distorted impression of performance (Camille,.
The comparison of performances between teams, team members and within individuals was often easier and more accurate if the performance indicators were expressed in terms of ratios, such as possession to turnovers, winners to errors, and passes taken to passes completed. An individual’s performance profile can become distorted if the correct comparisons were not made, since profiles may differ according to the opposition (Franks,. Performance data for an individual can be presented in three ways to evaluate success: i) In relation to the opponent’s data. ii) In relation to players of the same standard. iii) In relation to their own profiles of previous performances over the course of a number of competitive matches, a normative profile of a player or team can be created for comparative purposes (Hughes, 2000).
Performance can be analyzed in two ways within team sports: i) Individual assessment of players within the team. ii) Assessment of an aspect of performance for the whole team (Hughes, 1997). In any sporting situation, especially team matches, it was difficult, if not impossible, for coaches to notice and remember all the key events occurring within a training session or match, equipped only with their knowledge of the sport in question and their innate powers of observation ( Hughes, 2005). Yet analysis based on accurate observation and recall was a key tool for improving future performance. Football is a challenge match that players of teams challenge for possession and conduct direct or indirect the ball toward rivals’ goal. If players Intl. Res. J. Appl. Basic. Sci. Vol., 3 (4), 891-895, 2012 of team can be success in challenge, win in possession; concentrate in the defense immediate, attack direct to penalty area by sending pass or dribbling feint to rival and keeping the ball, pressure of opponents’ players and use of their situation in the match, they will be able to win in the match (Hughes, 2002). Individual defensive tactics directly affect the team's ability to regain possession and create scoring opportunities (Hughes, 1997).
Individual defense was a tactic skill in performance in Football and cause to keep condition in the matches. A team needs to maintain stability in whole of the match and control the opponent’s players. If a player fails to chase the ball immediately after losing possession then the opposing team has a greater chance for a scoring opportunity. Higher performance scores were given to the player based on the quality of the individual's defensive tactics. If a player regains possession of the ball in the attack area of the field then there was greater chance that an offensive counter will result in a scoring opportunity (Hughes, 2002).
The analysis contained variety of information about the match, e.g., successful and unsuccessful possession by each player. In sport, analysis and evaluation of performance was beset with problems due to the number and diversity of playing actions and the complexities of the performance. Therefore, the exact and entire measurement of a team's actual performance in a competition was difficult ).
The main focus would be how they have helped, and can better help, coaches Skills involve the analysis and improvement of sport performance. It makes extensive use of video analysis and technology. The practical value of performance analysis was that well-chosen performance indicators highlight good and bad techniques or team performances. They help coaches to identify good and bad performances of an individual or a team member and facilitate comparative analysis of individuals, teams and players.
Researchers in the field of sport science have endeavored to develop a systematic approach to performance analysis to help the coach establish accurate and reliable analysis systems specific to individual defense in Football. Although the method of assessment selected may vary according to the nature of the questions posed, the purpose of this study and the type of information desired, a quantitative analysis with the use of an objective and reliable recording method (either checklist or computerized recording) appears to provide the most useful record of performance.
Materials and Methods
Subjects: The Eighteen teams of premier league in Football matches participated in the tournament during 2009-10 years in Iran were chosen for analysis. The samples consisted of thirty four matches yielding 306 matches. In the process of data collection each competitive match produced data for two matches (home and away matches) for each team and thus provided the potential for the analysis of 34 match's performance. For the purposes of this study only the champion was analyzed.
Data Collection: Video analysis of 34 selected matches from the champion team that were carried out using videotape analysis by experts. Pen and paper notations have recorded certain factors for every score by both !" # !$ "% "$ and iii) win, equal and loses matches. One of the most important skills in Football was individual defense for tactic was selected as key elements that represent team performance. The purpose of the study was to determine of quantify the effectiveness of individual defense skill which coaches can use to evaluate individual defensive performance as it relates to success during Football matches. The skill received performance 0 to 8 scores, which the coach can then use to rate or rank an individual's skill level or the team's skill level. The importance of each scores element on scoring goals will be quantified. This scale was developed by the first author from the knowledge gained during his extensive international-level playing career and experience as a professional coach. Based on goal scoring performance and the following points scale frame, detailed descriptions of observation criteria were defined as objectively as possible for each of the individual defense skill performances (USSF1) ( Hughes, 2002).
The researcher had used a notational system for compare types of individual defense performances in teams 1 United States Football Federation’s (USSF) principle of defense tactics (2001) and National Football Coaches Association of America (NSCAA).
and its relation with success during Football matches. For the first time, the study has presented a scoring performance that effectively rates the importance of specific types of individual defense skill during Football match. The individual defense skill had divided into nine types of defense with specific score for each type of defense. The importance of each types of individual defense skill on scoring goals was quantified. Once the importance of scores in terms of each individual defense has been determined, coaches can plan and conduct practices, which should be designed in terms of the analysis of tactics.
Table 1: Performance scores based on the effect of the individual defense skill
Statistical Analysis: Multivariate step-wise regression analysis was used. The regression analysis would be carried out in two sections. First, considering multiple regression of goal scoring performance on selected skills scores. Second, backward step-wise regression of goal scoring performance on individual defense skill scores. The main objective of the regression analysis was to explain the dependent variable, the goal scoring performance by independent variables and this was done by constructing the ANOVA for regression analysis and deriving the multiple correlation coefficients. Significant level was set at P&0.05. All statistical analyses were performed using the software program SPSS, version 15.
The descriptive statistical of the individual defense scores for performance of teams are summarized in tables.
Table 2: Descriptive statistics of individual defense scores for win teams (N= 23)
893 Intl. Res. J. Appl. Basic. Sci. Vol., 3 (4), 891-895, 2012 Table 4: Descriptive statistics of individual defense scores for lose teams (N= 23)
Individual defense 7 scores and individual defense 8 scores had significant correlation with goal scoring performance for win teams respectively (P&0.05). Individual defense 3 scores, individual defense 4 scores, individual defense 5 scores and individual defense 6 scores had significant correlation with goal scoring performance for equal teams respectively (P&0.05). Individual defense 8 scores had significant correlation with goal scoring performance for lose teams respectively (P&0.05).
Discussion and Conclusion
In comparison between the win teams, lose teams and equal teams, the regression coefficients in each types of individual defense indicates the relative proficiency on the goal scoring performance.
The regression coefficient for individual defense 8 scores for win teams and lose teams were higher than the lose teams indicating that the challenge results in possession won, direct play in the middle 3rd has an important role on goal scoring performance. Also, the regression coefficient for individual defense 7 scores was positive for win teams and equal teams where as it was less for lose teams indicate the more the application of individual defense 7 scores strategy to gain more opportunity on goal scoring performance.
Also, individual defense 3 scores, individual defense 4 scores and individual defense 6 scores were predicative for goal scoring performance because there was no much difference in regression coefficient in types of individual defense among win, equal and lose teams. The regression coefficient of individual defense 5 scores was positive for equal teams, negative for lose teams and no significant contribution for win teams on goal scoring performance. The results have indicated that the individual defense 5 scores has not an important role on goal scoring performance, because there was no much difference in regression coefficient of the challenge results in possession and indirect play among win teams, equal teams and lose teams.
The regression coefficient of individual defense 2 scores was negative for equal teams and loses teams, no significant contribution for win teams on goal scoring performance. The results have indicated that the individual defense 2 scores has not an important role on goal scoring performance, because there was no much difference in regression coefficient of individual defense 2 scores among win teams, equal teams and lose teams.
The regression coefficient of individual defense 1 score was positive for equal teams and loses teams, negative for win teams on goal scoring performance. The results have indicated that the individual defense 1 score has not an important role on goal scoring performance, because there was no much difference in regression coefficient of challenge a 50/50 ball, but possession was not regain among win teams, equal teams and lose teams.
The individual defense 1, 2 and 5 scores have the marginal difference in regression coefficients between win teams, lose teams and equal teams and thereby cannot find significant difference between them.
The result of regression coefficient showed the challenge results in possession won and direct play in the attacking 3rd with 8 scores, the challenge results in possession and direct play in the middle 3rd with 7 scores and the challenge with delay but the opponents still penetrate with 3 scores for win teams were statistically significant on goal scoring performance. The challenge results in possession won and direct play in the attacking 3rd with 8 scores, the challenge results in possession and direct play in the middle 3rd with 7 scores and the challenge but no delay (opponents penetrate) with 2 scores for equal teams were statistically significant on goal scoring performance. The challenge results in possession won and direct play in the attacking 3rd with 8 scores, the challenge a 50/50 ball, but possession was not regain with 1 score and the
894Intl. Res. J. Appl. Basic. Sci. Vol., 3 (4), 891-895, 2012