Delayed Onset Muscle Soreness (DOMS) is a form of injury that often occurs after training. Once, muscle experiencing DOMS the body will experience decreased muscle strength, Range of Motion (ROM), increased inflammatory response. This is a Quasi Experiment, by using the One Group Repeated-Measures Design. Providing treatment with a foam roller to the sample to see changes in ROM body functions. The results of this study indicate that there is a decrease in ROM due to DOMS post a 10Km Long Distance Running activity. the calculated reduction in this research is lower extremities, namely Joint Hip, Knee, and Ankle. The research showed that there was a change in the Range of Motion after being measured at 24 hours, 48 hours and 72 hours compared to the pre-test data. The results of this study are based on statistical tests using Repeated Measures Anova with significant of P <.05. The result of pain degree is the distribution of muscle data that feels the greatest pain in Quadriceps Femoris 70%, Tibialis Anterior 30%, Triceps Surae 30%, Gluteus 30%, and Hamstring 10%. The conclusion of this study is the effect of foam roller on increasing Range of Motion and decreasing pain level that occurs in lower extremities.
Long distance running (LDR) is an exercise that has a relatively heavy load which can cause Delayed Onset Muscle Soreness (DOMS) and increase Reactive Oxygen Species (ROS) levels. Xanthine, one derivate of ROS will increase 10 times during aerobic activity which is metabolized to Uric Acid (mg/dL) (UA). Foam rolling (FR) is used for the recovery process. This study aims to determine the effect of long distance running on changes in UA levels and the effect of FR as an active recovery against changes in UA levels. This was a quasi-experiment study using a purposive sampling design, one-group repeated measure design of a sample population of young healthy males (17-25 years). The sample consisted of 10 trained young males in Semarang. The average value of UA before intervention was 4.43 mg/dL ± 0.51. In 90 minutes, it was 5.90 mg/dL ± 0.52, in 120 minutes was 5.71 mg/dL ± 0.72 and at 24 hours after intervention was 6.1 mg/dL ± 0.57. LDR has been shown to increase UA levels. FR which is done only once has not been able to reduce UA levels. The percentage of occurrence of post-LDR DOMS occurred at 24 hours.
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