The proportion of body components contribution of some in the prediction of some element of fitness for middle school students (12-13) years

Abstract

To determine the percentage of the contribution of the body components in the prediction of some elements of fitness for middle school students (12-13 years) ages.

The researcher used the descriptive approach in the style of associative survey studies the sample consisted of ( 129) students from the intermediate stage in the district of AL-TUZ for the academic year ( 2017 -2018 ) was chosen by random method .

The researcher used measurements and tests to reach research results the measurements were used and included :

Direct measurements ( height – weight ).

Indirect measurements ( body weight without fat – percentage of fat- mass index).

Physical fitness tests included the following : ( run 20m from the high start- baro test – throw a medical ball 3kg of stand – vertical  jump – stoop and  sit 10 tha – elastic shoulder and neck – run – walk 800 yards ) .

The researcher used the following statistical methods :

Percentage – arithmetic mean – simple correlation coefficient – gradient regression note that the researcher used statistical programs (spss) and ( Excell ) to analyze the evidence

The researcher reached the following conclusion :

The percentage of contribution and prediction of the body components of middle school students was obtained in the district of tuz for the ages ( 12-13 ) years on (11) equation for equations represented the contribution rate of (25%) and above at the level ( 0,000) which are as follows :

Agility = 8.292 + (1.192×  body weight free of fat )

Respiratory system circulation = 25.966 + ( 10.749× body wight free of fat ) Respiratory system circulation = 100.180 + (-2.172× weight ) + (11.245× body weight free of fat ) .   

Respiratory system circulation = 187.035 + (- 3.838× weight ) + ( 10.098× body weight free of fat ) + ( 1.725 × mass index )