The effect of high-intensity interval training on malondialdehyde (MDA) concentration in blood, circulatory respiratory endurance, and 1500-meter runner performance in young men.

The circulatory and respiratory systems play a significant role in increasing the 1500m runner's endurance, who must be able to withstand the demands of competition and distribute their physical abilities over the race distance, depending on the circumstances they face during the race. As well as increasing the body's functional systems' ability to eliminate waste products of energy production reactions, particularly those reactions that result in increasing production of free radicals, which in turn leads to increased malondialdehyde (MDA), which affects functioning cells and limits their effectiveness, and occasionally leads to their damage. The research aimed to identify the effect of high-intensity interval training on the concentration of malondialdehyde (MDA), circulatory system endurance, and the achievement of 1500-meter runners. The research sample consisted of 7 young runners representing the Anbar Governorate team in this sports event. The researcher supposed that this training method leads to differences in the level of MDA in blood and improves the ability of the circulatory and respiratory systems, as well as improves the 1500-meter achievement for the research sample. The researcher chose the experimental method that is compatible with solving the research problem. The researcher chose the experimental curriculum which fits with solving the research problem. The most important conclusions reached by the study results are that the high-intensity interval training method increases MDA levels in the blood that result from lipid oxidation, develops of the ability of the circulatory and respiratory systems, in addition to improves 1500 meters performance for the research sample. The researcher recommended using this training method in the development of the ability of the circulatory and respiratory systems to endure competition at an ideal level. As well, He emphasises that the trainers should monitor MDA concentrations in the blood, as it plays a key role in determining the number of free radicals produced during fat metabolism to produce energy. [ABSTRACT FROM AUTHOR]