Interaction Between Hot Water Immersion (HWI) and Cold Water Immersion (CWI) Methods with Gender on Decreasing Lactic Acid

Abstract

The purpose of this study was to examine Interaction Between Hot Water Immersion (HWI) and Cold Water Immersion (CWI) Methods With Gender on Decreasing Lactic Acid. Materials and Methods: This research is an experiment with 2x2 factorial design. The population of this study were all 40 PJKR students in Sukabumi City. Data collection was carried out by means of a test, which included a pre-test and post-test for lactic acid levels after running 100 m. Data analysis in this study used two way anava with a significance level of < 0.05. Then proceed with the paired samples test to compare the averages of the two related samples taken from the same population. Results: Based on the results, in the male group there was an average decrease in lactic acid of 3,621 for the HWI method, with a standard error of 0,183. The 95% confidence interval in the male group for the HWI method ranged from 3,249 to 3,993. As for the CWI method, there was an average decrease in lactic acid of 3,304 with a standard error of 0,183. The 95% confidence interval in the male group for the CWI method ranged from 2,932 to 3,676. In the women's group, the average decrease in lactic acid was 3,200 for the HWI method, with a standard error of 0,280. A 95% confidence interval in the women's group for the HWI method was not available in the data presented. Meanwhile, for the CWI method, there was an average decrease in lactic acid of 3,217 with a standard error of 0,280. The 95% confidence interval in the female group for the CWI method ranged from 2,648 to 3,785. Conclusions: Based on the research results, it can be concluded that there is no significant interaction between HWI and CWI therapy methods and gender in reducing lactic acid. The effect of HWI and CWI therapy on reducing lactic acid did not differ between men and women. There is an effect of HWI therapy on decreasing lactic acid. There is an effect of CWI therapy on decreasing lactic acid