The purpose of this study was to investigate the effects of meridian scraping and ginger extract intake on physical fitness, body heat, inflammatory factor and muscle damage during 8 week training in high school male elite judo players.
After approval of Pusan National University Institutional Review Board (Approval No. PNU IRB/2016_33_HR), twenty-eight judo players in Haedong high school volunteered to be test subjects. Experimental groups were ginger intake group(A, n=7), ginger intake with guasha group(B, n=7), guasha group(C, n=7), control group(D, n=8).
The total experimental period was 8 weeks. Judo training is 3 times a day, 6 days a week for 8 weeks and meridian scraping therapy one times per week for 8 weeks. A and B groups were instructed to take an 80㎖ ginger extract everyday after breakfast and dinner during the 8 week.
The test data were analyzed by paired t-test and one-way ANOVA, and the alpha level of p<0.5 was set for all tests of significance. The results of this study are as follows:

1. Physical Fitness
1) The anaerobic power and flexibility in A, B and C groups had significantly increased.
2) The muscular strength in A and B groups had significantly increased.
3) The agility in all groups were significantly increased.
4) The power in C group had significantly increased.

2. Body Heat
1) The right knee temperature in A group had significantly decreased, and C group had significantly increased. The right knee temperature in C group was significantly higher than that in A, B and D group.
2) The left knee temperature in C group had significantly increased, and D group had significantly decreased. The left knee temperature in C group was significantly higher than that in A, B and D group.
3) The right wrist temperature in C group had significantly increased.
4) The both shoulders temperature in A group had significantly decreased

3. Inflammatory factor
1) The CRP in D group had significantly increased.

4. Muscle Damage
1) The CK in D group had significantly increased.
2) The LDH in D group had significantly increased. The LDH in D group was significantly higher than that in A, B and C group.

In conclusion, the results of this study show that meridian scraping and ginger extract seem to have a positive influence on reduce inflammation, recovery of muscle damage and smooth blood circulation. Therefore meridian scraping and ginger extract is considered to be able to contribute an ergogenic aids.