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Table 2 Reference data from the young reference group (20–40 years) regarding SMA, SMD, IMAT, and their indices

From: Diagnosing sarcopenia and myosteatosis based on chest computed tomography images in healthy Chinese adults

  Men (n = 142) Women (n = 102)
T score = − 1.0 T score = − 2.0 T score = − 2.5 T score = − 1.0 T score = − 2.0 T score = − 2.5
SMA (cm2) 91.76 75.67 67.62 60.85 50.39 45.16
SMA/height2 (cm2/m2) 31.29 25.75 22.98 23.92 20.16 18.28
SMA/weight (cm2/kg) 1.34 1.16 1.08 1.17 0.99 0.9
SMA/BMI (cm2/kg/m2) 3.91 3.37 3.11 2.95 2.43 2.17
  p1 p5 p10 p1 p5 p10
SMD (HU) 33.76 37.42 39.21 29.25 33.17 34.46
  p99 p95 p90 p99 p95 p90
IMAT (cm2) 14.35 8.72 7.17 5.28 4.58 4.01
IMAT/SMA (%) 11.19 7.51 6.27 8.99 6.83 6.19
  1. BMI: body mass index; IMAT: intermuscular adipose tissue area; P1: the 1st percentile; P5: the 5th percentile; P10, the 10th percentile; P90: the 90th percentile; P95: the 95th percentile; P99: the 99th percentile; SMA: skeletal muscle area; SMD: skeletal muscle radiodensity