. 2020 Mar 18;2020:2073803. doi: 10.1155/2020/2073803

Table 2.

Information of the selected differential metabolites after training.

No.	t _R (min)	Similarity	VIP	KEGG	Metabolites	Molecular formula	p value	Fold change^a	Trend^b
1	7.04	901	1.6	C02502	2-Hydroxypyridine	C₅H₅NO	9.334E-03	1.387	↓^∗∗
2	7.56	939	1.3	C00160	Glycolic acid	C₂H₄O₃	3.388E-02	1.584	↓^∗
3	8.12	942	1.5	C00192	Hydroxylamine	NH₃O	6.903E-03	0.756	↑^∗∗
4	8.44	869	1.6	C00213	Sarcosine	C₃H₇NO₂	2.891E-03	1.510	↓^∗∗
5	10.29	867	1.7	C00189	Ethanolamine	C₂H₇NO	1.148E-03	1.804	↓^∗∗
6	10.97	822	2.0	C00042	Succinic acid	C₄H₆O₄	7.766E-05	3.262	↓^∗∗∗
7	11.56	907	1.2	C00065	Serine	C₃H₇NO₃	3.582E-02	1.575	↓^∗
8	11.96	886	1.7	C05519	L-Allothreonine	C₄H₉NO₃	1.076E-03	2.272	↓^∗∗
9	12.18	747	1.2	C00489	Glutaric acid	C₅H₈O₄	1.358E-04	4.344	↓^∗∗∗
10	12.98	834	1.0	C00872	Aminomalonic acid	C₃H₅NO₄	1.485E-04	3.351	↓^∗∗∗
11	13.87	772	1.5	C01108	Pyrogallol	C₆H₆O₃	2.651E-02	2.296	↓^∗
12	14.07	797	1.8	C00300	Creatine	C₄H₉N₃O₂	4.041E-03	3.987	↓^∗∗
13	14.60	892	1.8	C03761	3-Hydroxy-3-methylglutaric acid	C₆H₁₀O₅	3.848E-04	2.108	↓^∗∗∗
14	14.95	855	1.7	C00156	4-Hydroxybenzoic acid	C₇H₆O₃	3.561E-03	2.170	↓^∗∗
15	15.08	792	1.7	C00642	4-Hydroxyphenylacetic acid	C₈H₈O₃	1.853E-03	2.369	↓^∗∗
16	15.44	871	1.6	C08353	Ribose	C₅H₁₀O₅	8.630E-04	1.790	↓^∗∗∗
17	15.57	736	1.8	C03139	Guanidinosuccinic acid	C₅H₉N₃O₄	1.532E-04	2.247	↓^∗∗∗
18	16.07	882	1.8	C03722	Quinolinic acid	C₇H₅NO₄	5.011E-04	2.031	↓^∗∗∗
19	16.60	746	1.6	C11527	4-Hydroxymandelic acid	C₈H₈O₄	4.214E-03	1.823	↓^∗∗
20	17.03	867	1.3	C00158	Citric acid	C₆H₈O₇	4.131E-02	0.518	↑^∗
21	17.70	895	1.2	C00198	Gluconic lactone	C₆H₁₀O₆	2.088E-02	1.383	↓^∗
22	17.75	910	1.8	C00031	Glucose	C₆H₁₂O₆	3.691E-03	3.907	↓^∗∗
23	18.01	724	1.3	C00159	Mannose	C₆H₁₂O₆	1.309E-02	1.435	↓^∗
24	18.26	797	1.6	C00794	Sorbitol	C₆H₁₄O₆	4.359E-02	0.392	↑^∗
25	21.24	758	1.5	C02470	Xanthurenic acid	C₁₀H₇NO₄	7.551E-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; ^∗p < 0.05; ^∗∗p < 0.01; ^∗∗∗p < 0.001.