Print ISSN: 1993-9345

Online ISSN: 2664-2514

Keywords : Football Players


A comparative study of some Biomechanics variables of throw - in from stability and movement for football players

Mohammed Khaleel

Al-Rafidain Journal For Sport Sciences, 2014, Volume 20, Issue 64, Pages 277-294
DOI: 10.33899/rajsport.2014.81911

The research aims to :
1- Identify the values of some biomechanical variables for football players during the implementation of the throw in from stability and movement.
2-Comparison between some biomechanical variables of throw- in for the Player and the ball from the stability and movement.
Research scopes
1-the human scope: - sport Education college players for football in 2012.
2- Place scope: - Mosul University stadium.
3-. the temporal scope: - 27/2/2012 and up 29/2/2012
The researchers used descriptive method for its convenience to the nature of the research. The society of research consist of sport Education College of football in Mosul university which they were 24 players and nine players have been chosen from them as a sample of research
. Two digital video cameras (SONY) have been used. The first camera was fixed (7 m.) away from the player and the focus of the camera was (1.24) . The second one was fixed in a distance of (18.50 m.) in order to measure the variables of the ball. The focus of the camera was on (1.08 m.) height. The camera speed was (25 frames per second). The following statistical tools were used by the researchers > the mean, standard deviation, and (T) Test.
. The researchers have come to the following conclusions:
The distance of throw in from stability depends on bending the angles of body specialty the knee and hip and trunk
The distance of throw in from movement depends on the acceleration from the approach steps

The Effect of Aerobic Endurance Training With Proposed periods Rest On the fatigue index and Recovery curve of heart rate for football players

Ziad .y.Al Saffar

Al-Rafidain Journal For Sport Sciences, 2014, Volume 20, Issue 64, Pages 95-108
DOI: 10.33899/rajsport.2014.81902

The research aims at:
1-Finding out significance of the difference between pre and post – test for the two experimental groups in fatigue index.
2-Finding out significance of the difference between the two experimental groups in fatigue index in post-test.
3-Finding out the significance of the differences between the two experimental groups in Recovery curve of heart rate.
4- Finding out significance of the difference between the two experimental groups in Recovery curve of heart rate in post- test.
hypotheses:
1-There are significant differences between the pre- and post-test for the two experimental groups in the index of fatigue.
2-There are significant differences between the two experimental group in the index of fatigue in the post-test.
3-There are significant differences between the pre- and post-tests for the two experimental groups in the Recovery curve of heart rate.
4-There are significant differences between the two experimental group in Recovery curve of the heart rate in the post- test.
The experiment was applied on a population of players from mosul soccer club consisted of (14) players were deliberately chosen. They were divided into two groups (7) players in each group .equivalence between both groups under discussion were achieved concerning the variable of age ,tallness , weight ,anaerobic power, fatigue index . The pre-test has carried out of the variables : anaerobic power , fatigue index , and the average of heart rate in recovery periods , after the effort directly , and after (15,30,45,60,120,180 second) . Research procedures have also included two training programs lasted (8) weeks with (3) session per week . The first group was trained according to the interval training program with (1:1) ,(1:1/2) work relief ratio . Whereas, the second group was trained according to the proposed program with (1:1) ,(1:1/2) (1:1/3) (1:1/4) work relief ratio . After that the post- test was carried out .
Conclusion:
1- The Proposed Endurance training program with(1:1) (1:1/2) (1:1/3) (1:1/4) work relief ratio is relatively best than the interval training program with (1:1) ,(1:1/2) work relief ratio in fatigue index .
2- The Proposed Endurance training program with(1:1) (1:1/2) (1:1/3) (1:1/4) work relief ratio is relatively best than the interval training program with (1:1) ,(1:1/2) work relief ratio . specially at the third minute .