Fig. 3

a-f Mean estimated z-scores ± standard errors for echogenicity and muscle thickness of the tibialis anterior (a, d), medial gastrocnemius (b, e), and rectus femoris (c, f) muscles over time: paretic side (circles, solid lines) and non-paretic side (triangles, dashed lines). Positive z-scores for echogenicity are considered indicative of poor muscle quality, whereas negative z-scores for muscle thickness indicate muscle atrophy. Grey bands represent the area within 1.0 SD of the reference values.Tables with estimated means and standard errors can be found in Additional file 2