Table 4. Criteria for the diagnosis of sarcopenia.

Diagnosis is based on documentation of criterion 1 plus (criterion 2 or criterion 3)
	local standard*	EWGSOP 1	EWGSOP 2**	AWGS(2014)	AWGS(2019)
1.Muscle mass(BIA)	male <6.4 kg/m2 female <5.0 kg/m2	male <6.4 kg/m2 female <5.0 kg/m2	male <6.4 kg/m2 female <5.0 kg/m2	male <7.0 kg/m2 female <5.7 kg/m2	male <7.0 kg/m2, female <5.7 kg/m2
2.Muscle strength	male <26 kg, female <18 kg	Male <30kg, female <20kg	male <27 kg, female <16 kg	male <26 kg, female <18 kg	male <28 kg, female <18 kg
3. Performance	GS≤0.8m/s	GS ≤0.8m/s	——	GS <0.8m/s	GS <1.0m/s

local Standard*: In reference to EWGSOP1, the SMI of the local Standard is 2 standard deviations below the mean of young adults aged 18-39 in the study groups (male <6.4 kg/m2 female <5.0 kg/m2) and the gait speed at ≤0.8m/s. The handgrip strength was modified compared to AWGS 2014 and was below 26 Kg for males and below 18 Kg for females. EWGSOP2**: The SMI of the local Standard was 2 standard deviations below the mean of young adults aged 18-39 in the study group (male<6.4 kg/m2 female<5.0 kg/m2). The handgrip strength was below 27 Kg for males and <16 Kg for females.