Table 3.

Changes of serum metabolites in subjects before and after exercise.

δ (ppm)	Metabolite	E1 versus E2
0.86	Lipid	↓**
0.96	Leucine	↓**
1.01	Isoleucine	↓**
1.05	Valine	↓**
1.33	Lactate	↑**
2.08	Glutamate	↓**
2.14	Glutamine	↓**
3.05	Creatine	↓**
3.21	Carnitine	↓**
3.27	Betaine	↓**
3.49	Acetoacetic acid	↓**
3.57	Glycine	↓**
3.67	Glycerol	↓**
5.24	Glucose	↓**

**p < 0.01 versus C group, *p < 0.05 versus C group; ↑ and ↓ means increase and decrease of metabolite levels.