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Table 2 Case-by-case analysis of shear wave speed (SWS) in the IBM and NAM groups with corresponding age and muscle weakness

From: Muscle shear wave elastography, conventional B mode and power doppler ultrasonography in healthy adults and patients with autoimmune inflammatory myopathies: a pilot cross-sectional study

Study
Subtype
Age SWSD
Rest-m/s
SWSD
Stretch-m/s
SWSVL
Rest-m/s
SWSVL
Stretch-m/s
MMTD
/10
MMT
quads/10
NAM 69 1.75 2.04 1.95 2.04 9 10
NAM 71 1.75 1.79 1.89 2.87 9 8
NAM 52 1.77 2.03 1.68 1.70 6 7
NAM 56 2.67 2.29 1.67 1.81 10 8
NAM 70 2.17 2.12 1.55 2.28 7 8
IBM 76 1.78 4.05 1.83 4.19 7 5
IBM 77 2.56 2.10 1.50 1.77 10 9
IBM 68 1.61 2.51 1.41 3.43 10 7
IBM 61 1.81 2.25 1.71 2.30 5 9
IBM 70 1.66 2.59 2.16 1.30 10 7
HC
Mean+/-SD
61.00, 7.47 2.14+/-0.43 2.40+/-0.36 1.74+/-0.24 1.93+/-0.20 10 10
  1. deltoid, VL vastus lateralis, quads quadriceps femoris, SWS shear wave speed, m/s metres per second, MMT manual muscle testing (maximum score 10), NAM  necrotising autoimmune myopathy, IBM inclusion body myositis, HC healthy controls, SD standard deviation