The Effect Of Supplying Soybean Peptide On The Serum CK Isoenzymes Of The Rats After Incremental Load Training

The purpose of the study was to observe the effect of incremental load training and the intervention of soybean peptide or soybean protein on the serum CK isoenzymes of the rats. In different recovery time after a period of high intensity training, CK isoenzymes from the rats'skeletal muscle and cardiac muscle were observed. Together with other relative indexes, we discussed the CK isoenzymes for evaluating exercise induced muscle micro-injury, and provide theory support for soybean peptide to promote EIMI repairing.Methods: 130 male SD rats were randomly divided into non-exercise control group and three training groups: group of training and supplying soybean peptides,group of training and supplying soybean protein and group of suppling water. After 5-week incremental training ,serum samples were taken separately at 0h,6h,24h,48h after the last exercise. serum enzymes activity of CK,CK isoenzymes and LDH were measured.Results: After 5-week incremental training, activities of serum CK,CK-MM,LDH,ALT and AST were increased. The activity of serum CK was significantly consistent with CK-MM. Supplying soybean protein can decrease the activities of serum CK,CK-MM,CK-MB after the exercise, and supplying soybean peptide can decrease the activities of serum CK,CK-MM,LDH after the exercise.Conclusion: After 5-week incremental training, serum CK and CK-MM can each reflect exercise induced muscle micro-injury. The effect of soybean peptide was better than soybean preotein in protecting skeletal muscle and cardiac muscle and decreasing skeletal muscle and cardiac muscle injury after the exercise.