Author(s): Zahraa Radhi Jabbar, Amir Jassim Muhammad and Mustafa Abdel Karim Laibi

Abstract:
The introduction to the research included that Scientists of physical education and related sciences have recently begun to search for all that is new in terms of a method or a means that contributes to stabilizing or increasing the level. While included Research problem by delving into this phenomenon by answering the following question. 1- What is the level of changes that can occur in the level of the cortisol hormone during the process of speed training by conducting laboratory tests and studying the changes that occur as a result of the exercises, through which the most accurate matters and cases are determined and the extent of their positive and negative impact on the athletes, While the study aimed to identify 1- the extent of the change in the hormone cortisol at rest and after a 200m run. 2- To identify the effect of the exercised physical effort under study on the cortisol concentration of the research sample.

Pages: 289-292  |  225 Views  59 Downloads