Laparoscopic liver resection is associated with less significant muscle loss than the conventional open approach

Table 5 Serum amino acid profiles between patients with PMI^a decrease ≤ 5% and > 11.5%

Metabolites	PMI^a decrease ≤ 5%	PMI^a decrease > 11.5%	p-value
Ornithine	143.22 ± 42.92	103.48 ± 34.5	0.017
Citrulline	51.44 ± 28.22	37.62 ± 11.78	0.048
Threonine	130.18 ± 32.86	113.00 ± 29.41	0.173
Tyrosine	89.54 ± 23.64	78.62 ± 14.83	0.204
Glycine	216.47 ± 77.26	191.91 ± 54.58	0.386
Serine	128.94 ± 24.76	121.27 ± 22.76	0.418
Isoleucine	67.53 ± 22.59	74.04 ± 19.39	0.444
Tryptophan	36.80 ± 9.67	34.51 ± 10.79	0.554
Glutamine	446.48 ± 132.11	415.31 ± 146.42	0.554
Histidine	92.30 ± 14.23	89.29 ± 16.84	0.603
Asparagine	52.93 ± 13.73	50.08 ± 15.24	0.603

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