Resumen de Some Biokinetic Variables of The Movement of The Feet of The Weightlifter During The Descending Phase Under The Barbell In The Lift To The Chest Section And Its Relationship To Achievement In The Clean And Jerk Lift

Maad M Allawi, Nozad Shafeeq Khalaf, Zaki Mirdan Omar

• The study aimed to identify the relationship between some variables of biokinetic movement of the feet of the weightlifters in the stage of fall (descent) underweight in the section of lift to chest and achievement in Clean and jerk. The research sample included 7 weightlifters of the Iraqi national team, the advanced category to achieve the technical scientific observation. The researcher used video photography, using two video cameras for a mobile device type 12 I phon promax. The two cameras were placed at a distance of (5) m from the right and left sides of the weightlifter. The height of the focus of the lens was imaging (1) m from ground level and the tools were fixed by the special holder of each machine. The frequency of the two cameras was (120) images /second. After that, the kinetic analysis program Kenovea was used to find the biokinetic variables of the weightlifter. The arithmetic - standard deviation - simple correlation coefficient - Pearson) as statistical analyses were used. Whenever the weightlifters possess an appropriate amount, not too high, of momentum, kinetic energy, work done, and ability during their forward or backward movement underweight in the fall (jumping) stage in the chest lift section, they have a positive role in achieving the best achievement.