Fig. 4From: An attenuated rate of leg muscle protein depletion and leg free amino acid efflux over time is seen in ICU long-stayersA longitudinal presentation of total free amino acids (AA) in plasma on 30 occasions in long-staying intensive care unit (ICU) patients (n = 20). a The fluxes across the leg. b The total free amino acid concentrations in arterial plasma. A negative flux indicates a net release from muscle tissue, and a positive flux indicates a net uptake into skeletal muscle. The p values from the linear mixed effects model against time in the ICU are indicatedBack to article page