The purpose of this study was to determine the effect of structured physical training on changes in running time of 2.4 km and levels of blood lactic acid. This study used a randomized pre and post test control group design. Of the 540 Persipura junior football players, 94 were selected who met the inclusion and exclusion criteria. Of these, 30 people were randomly selected as samples. The sample obtained was randomly divided into two groups to be given different treatments. The control group (Group-1) was given conventional training and the treatment group (Group-2) was given structured physical training. The running time of 2.4 km and the blood lactic acid levels of all subjects were measured, then they were given training for eight weeks. After eight weeks of training, the running time of 2.4 km and blood lactic acid levels were observed again. The data obtained were analyzed using paired t-test for data with normal distribution and the Wilcoxon signed rank test for those that were not normally distributed. The difference in treatment results was tested using the Independent t-test for normally distributed data and the Mann-Whitney test for data that were not normally distributed. The results showed that there was a decrease in the mean of running time of 2.4 km after treatment in Group-2 from 10.51 minutes to 9.40 minutes with a value of p = 0.001 (p <0.05). Blood lactic acid levels decreased from 6.79 to 4.25 mM/L with a value of p = 0.000 (p <0.05). Besides that, there was also a difference in the running time of 2.4 km and blood lactic acid levels between groups after treatment with p values 0.000 and 0.000, respectively (p <0.05). Therefore, it is expected to carry out structured training to reduce the running time of 2.4 km and blood lactic acid levels in training.
Volume 12 | Issue 9
Pages: 52-58
DOI: 10.5373/JARDCS/V12I9/20202641