Changes of Differential Urinary Metabolites after High-Intensive Training in Teenage Football Players

Table 2

Information of the selected differential metabolites after training.

No.	(min)	Similarity	VIP	KEGG	Metabolites	Molecular formula	value	Fold change^a	Trend^b
1	7.04	901	1.6	C02502	2-Hydroxypyridine	C5H5NO	9.334-03	1.387	↓
2	7.56	939	1.3	C00160	Glycolic acid	C2H4O3	3.388-02	1.584	↓
3	8.12	942	1.5	C00192	Hydroxylamine	NH3O	6.903-03	0.756	↑
4	8.44	869	1.6	C00213	Sarcosine	C3H7NO2	2.891-03	1.510	↓
5	10.29	867	1.7	C00189	Ethanolamine	C2H7NO	1.148-03	1.804	↓
6	10.97	822	2.0	C00042	Succinic acid	C4H6O4	7.766-05	3.262	↓
7	11.56	907	1.2	C00065	Serine	C3H7NO3	3.582-02	1.575	↓
8	11.96	886	1.7	C05519	L-Allothreonine	C4H9NO3	1.076-03	2.272	↓
9	12.18	747	1.2	C00489	Glutaric acid	C5H8O4	1.358-04	4.344	↓
10	12.98	834	1.0	C00872	Aminomalonic acid	C3H5NO4	1.485-04	3.351	↓
11	13.87	772	1.5	C01108	Pyrogallol	C6H6O3	2.651-02	2.296	↓
12	14.07	797	1.8	C00300	Creatine	C4H9N3O2	4.041-03	3.987	↓
13	14.60	892	1.8	C03761	3-Hydroxy-3-methylglutaric acid	C6H10O5	3.848-04	2.108	↓
14	14.95	855	1.7	C00156	4-Hydroxybenzoic acid	C7H6O3	3.561-03	2.170	↓
15	15.08	792	1.7	C00642	4-Hydroxyphenylacetic acid	C8H8O3	1.853-03	2.369	↓
16	15.44	871	1.6	C08353	Ribose	C5H10O5	8.630-04	1.790	↓
17	15.57	736	1.8	C03139	Guanidinosuccinic acid	C5H9N3O4	1.532-04	2.247	↓
18	16.07	882	1.8	C03722	Quinolinic acid	C7H5NO4	5.011-04	2.031	↓
19	16.60	746	1.6	C11527	4-Hydroxymandelic acid	C8H8O4	4.214-03	1.823	↓
20	17.03	867	1.3	C00158	Citric acid	C6H8O7	4.131-02	0.518	↑
21	17.70	895	1.2	C00198	Gluconic lactone	C6H10O6	2.088-02	1.383	↓
22	17.75	910	1.8	C00031	Glucose	C6H12O6	3.691-03	3.907	↓
23	18.01	724	1.3	C00159	Mannose	C6H12O6	1.309-02	1.435	↓
24	18.26	797	1.6	C00794	Sorbitol	C6H14O6	4.359-02	0.392	↑
25	21.24	758	1.5	C02470	Xanthurenic acid	C10H7NO4	7.551-06	5.567	↓

Fold change^a refers to the ratio of the average metabolite level in postexercise group relative to that in preexercise group.
Trend^b refers to the changed trend of the average metabolite level in postexercise group relative to that in preexercise group. ↑: increase; ↓: decrease; ; ; .