Expanded SPPB plotted against (A) SRC (Maximal Respiration minus Basal Respiration; pmol/min/500,000 cells), (B) Maximal Respiration (pmol/min/500,000 cells), and (C) Basal Respiration (pmol/min/500,000 cells) in peripheral blood mononuclear cells. Peak knee extensor strength (Nm) plotted against (D) SRC, (E) Maximal Respiration, and (F) Basal Respiration in peripheral blood mononuclear cells. Grip strength (kg) plotted against (G) SRC, (H) Maximal Respiration, and (I) Basal Respiration in peripheral blood mononuclear cells.
SPPB, short physical performance battery; SRC, spare respiratory capacity.
N=15.