دراسة تقويمية مقارنة في نسبة التحفيز للوحدات الحركية لبعض العضلات العاملة بين جانبي الجسم لدى رافعي الأثقال

الملخص EN

The research concluded the introduction and the importance of research, which sports has become the most important life and recreational activities, because of their great benefit in maintaining human health in the first place and also in testing the capabilities of the human and the discovering the indicators of ability of the human body.

The importance of research is to make research sample subjected to study in order to stand at the level of balance in the rates of motor units which stimulate during acting force against the high principles between the body sides and thus identify the potentials of weightlifting heroes in Iraq.

The research problem, there is a failure in some Liftings.

The research aims to: 1- Identify the proportion of motor units (the ability to stimulation) in some muscles working with some of the weightlifting heroes and for side of the body.

2- Identify the differences in the proportion of motor units (the ability to stimulate) for some working muscles between the sides of the body in some weightlifting heroes The research hypotheses: - The presence of significant differences in the proportion of moral motor units (the ability to stimulate) for some working muscles between the sides of the body in some weightlifting heroes.

The second chapter has included theoretical studies concerning with the subject of study.

The third chapter: The researchers used a descriptive approach at a sample of lifters who are Iraq weightlifting champions their number (7) they are of the weighting class (77,69,62) and they have achievements in several local and continental tournaments.

The forth chapter shows the showing, analytic and discussing the results.

The important conclusions: 1- Showing that the percentage of motor units operating in the deltoid muscle and three- tipped muscle in the right side are bigger than the left side which indicates weakness in the balance, which is supposed to be available on both sides.

2- Showing that the percentage of motor units operating in the quadriceps femoris muscle and square twin muscle do not differ significantly, and there was a virtual statistical differences are minimal and not significant.

3- Showing that there is a weakness in the training process, which is supposed to take into account the balanced growth of the physical characteristics.

Recommendations: 1 - Focusing on the development of the deltoid and triceps muscle in the process of taking into account the balance of force and by stimulating the motor units during the training process of the exact recipe force.

2- Making continuous physical testing of the nervous and muscle system (motor) for being considered an accurate indicator of the ability as an important adjective structure for athletes in weightlifting and in the rest of the sport