Table 1 The classification of sub-types of sarcopenia

Different stages

SMI

①male< 7.0 kg/m² female< 5.7 kg/m²

②male≥7.0 kg/m² female≥5.7 kg/m²

Grip strength

③male< 28 kg, female< 18 kg

④male≥28 kg, female≥18 kg

Physical function assessment⑤6 m gait speed < 1.0 m/s or SPPB score ≤ 9 or

standing test ≥12 s

⑥6 m gait speed > 1.0 m/s or SPPB score > 9 or

standing test < 12 s