크레아틴 섭취가 100미터 달리기 구간별 기록과 혈중 기질 성분의 변화에 미치는 영향

This study was conducted to investigate the effect of creatine intake on the changes in blood substrates and split times(the first step after the start, the 5th step, 30m, 30~70m, 70~100m) of 100m sprint in 14 adolescent male sprinters. They were divided into two groups: creatine intake (n=7) and placebo intake (n=7), creatine and placebo were taken 5 times(After breakfast, after lunch, between breakfast and lunch, after dinner, between lunch and dinner) a day for 5 days. Blood samples were collected 4 times(Before and after 100m sprint before intake, before and after 100m sprint after intake). All collected data were subjected to univariate analysis, paired t-test, and independent t-test using the SPSS statistical program. The statistical significance level was set at α=.05. As a result of the analysis, creatine intake did not affect the split times of each section, and glucose and lactate among the blood substrates during the sprint of 100m before and after creatine intake did not show any difference between groups, but showed a difference after the sprint compared to before the sprint(p=.000). Therefore, there was no difference in the changes in blood substrates and split times of 100m sprint according to creatine intake.