PDHB and sarcopenia: As is showed in Figure 5A, the expression levels of PDHA1 (p = 2.4e-3), DLAT (p = 2.2e-3), PDHB (p = 3.3e-3) and NDUFC1 (p = 1.4e-3) in the sarcopenia group were significantly decreased than these in the healthy controls.