Print ISSN: 1993-9345

Online ISSN: 2664-2514

Keywords : Biomechanic

Measuring the weight and body mass of the swimmer inside the water

Falah. T. Hammo; Hasan H. Abdullah

Al-Rafidain Journal For Sport Sciences, 2021, Volume 24, Issue 73 syppl, Pages 106-119
DOI: 10.33899/rjss.2021.167770

The importance of this research lies in measuring the human body mass inside the water because it requires preparing a method or a new style sows us this variable accurately putting the solutions and it reduce the required time to calculate this  variable in an objective way. So the importance of this research is limited in finding  a simple scientific way in  calculating the athletics body mass inside the water because measuring the variable inside the water  requires many efforts and  tools and to get the advantage of this research from the specialists in the biomechanics.     
The aim of the research was to find out a simple scientific method to calculate the body mass of the human inside the water, and the researcher used the descriptive approach for its suitability to the nature of search. The research sample included the students of  the second year department of Physical Education / University of Halabja which includes (five) students, they were selected by the intentional way.
            The researcher used the measurement and analysis methods as away of collecting data, they dealt with data by these statistical ways: the arithmetic mean, standard deviation and the coefficient of variation, the data were treated statistically by using the computer within the Statistical Program of Social Sciences (SPSS) and the researcher concluded the following :
            Through the results of the research showed that the scientific equation of prepared to calculate the body mass of human inside the water was reached the real value of the human body inside the water, and therefore it can be adopted by the researches and studies dealing with this topic.
The researcher recommended the following :
- Using the mathematical scientific to measure the body mass inside the water.
- Writing an equations and other software to calculate the biomechanical variables ( Kinematical and Kinetic variables).

A Comparison Study in effect of using different helping devices on Some Biomechanic Variables of the Rotation and Movement on Pony Device for Amateurs.

Obei Ramiz Abdulghany; Saddallah Abas Rashid

Al-Rafidain Journal For Sport Sciences, 2007, Volume 13, Issue 46, Pages 68-90
DOI: 10.33899/rajsport.2007.6005

The study aims to expound some biomechanic variables of the rotation and movement on pony device for amateurs and comparing these moves among some of the most best players in the Fotowa sports Club in Ninevah and players of Irbill sport club, Through the observations of the players in these sport clubs especially on the pony device during teaching the rotation and movement performance and previous experience with the players of both sport clubs, the researchers decided that the subject sample consisted of the best four players in the Fotowa and Irbill sport clubs and they were deliberately selected and homogenized according to body mass, age, and training experience.
The researcher adopted the descriptive method which appropriate to the nature of the study and the data were collected through observation using a video capture device.The main experiment was carried out in Ninaveh and Irbill using the special statistic tools and research methodology for correlated samples the results were presented according the calculated statistical marks.
The researchers deducted after studying the results that significant differences in the favor of the AL-Fotowa club appeared in the height of the shoulder joint on the base of support and displacement of hip when supported on the right hand or the left hand in addition significant differences in favor for the Fotowa club in sholder angle and inclination of shoulder blade and hip angle.
The performance of the players of AL- Fotowa club is better than that for Erbill Club because of the accessory devices aiding in developing the technical performance of this club including the split support device in this club which is made in accordance to international standards (area larger than the one used in Irbil club).
Therefore, researcher recommended the use of aiding devices in training and that they are build and manufactured in accordance with international standards which help players to be ideal in their prefor mance.