단기간 크레아틴 구강투여가 최대근력 및 신체조성에 미치는 영향 = A Study on the Effect of Short-term Oral Creatine Administration on Maximum Strength and Body Composition

다국어 초록 (Multilingual Abstract)

The purpose of this study was to identify the effect of shout-term oral creatine administration of maximum strength and body composition.
For this purpose, specialists in yudo and undergraduates in 'Y' University were selected as the subjects of this study and 5 persons were each randomly assigned to the group of training plus creatine, to the group of only training and to the group of only creatine administration. They were asked to ingest 20g of creatine with ionized beverage and water after breakfast, lunch and supper and before bedtime(5g x 4 times) everyday for 6 days.
They was asked to conduct weight training three time a week, and sports events included bench press, leg extension, leg curl, arm curl, shoulder press and the like. The repeated them at the workload of 70∼80% of I-RM and conducted each motion in three sets.
To measure muscular strength as the variable to be tested, an attempt was made to measure bench press I-RM, leg extension I-RM, leg curl I-RM, arm cur I-RM, shoulder press I-RM before and after training. An attempt was made to determine such factors related to body compostion as weight, body fat amount and body fat ratio using the Inbody 3.0 Body Compostion Analyzer. Creatine analysis was conduct through creatine in urine by using the biochemical analyzer(Model-Ha TACHI 747/737, HITACHI CO. Japen).
Repeated two-way ANOVA was used to analyze data. Hypotheses were tested at the significance level of d=.05.
As a result, the following results were obtained:
1. It was found that both of the groups showed a significant defference in bench press, leg extension, leg curl, arm curl, shoulder press, incline bench press, should machine, sit-up I-RMs before and after participation in short-run weight training(p<.05). But there was no difference in them between groups. And it was found that there was no interaction before and after creatine administration and one-week weight training. (p>.05).
2. It was found that there was no signigicant variation in body composition(body fat amount changes and body fat ratio changes) before and after shout-run weight training(p>.05). And it was found that there was no interaction before and after creatine administration and one-week weight training(p>.05).
3. It was found that there was no significant variation in the urinalysis before and after short-run weight training(p<.05).
And it was found that there was no interaction before and after creative administration and one-week weight training (p>.05).