Fig. 2From: The rate and assessment of muscle wasting during critical illness: a systematic review and meta-analysisLoss in muscle mass from day 1 to day 14 of ICU admission. Abbreviations: percentage, %; rectus femoris: RF; cross-sectional area: CSA, thickness: Th, quadriceps muscle layer thickness: QMLT; biceps brachii: BBBack to article page