The effect of lactic acid concentration on the performance of men's middle-distance runners

الملخص

The importance of the research lies in knowing the effect of lactic acid concentration on the achievement of middle-distance runners by investing it in training units in order to develop some physiological variables and the achievement of middle-distance runners. The research problem is summarized in the researchers' failure to address the effect of lactic acid concentration in the blood of middle-distance runners 0, as the latter is a realistic problem that must be solved appropriately because it directly affects the runner's digital achievement. The study aimed to (identify the effect of lactic acid concentration on the achievement of men's middle-distance runners), and the research sample represented men's middle-distance runners. The most important conclusions were as follows:

1. There were statistical differences between the pre-measurement (before the warm-up process) and the post-measurement (after the first test) in the percentage of lactic acid concentration, in favor of the post-measurement.
2. There were statistical differences in the concentration of lactic acid at the end of the first test and the end of the second test in favour of the end of the second test.