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Table 2 Ultrasound-derived adiposity variables

From: Relative abdominal adiposity is associated with chronic low back pain: a preliminary explorative study

Measure Calculation Definition
A-L (MsAa + MiA)/MsL Abdominal-to-lumbar adiposity ratio (total subcutaneous and visceral abdominal adiposity thickness relative to lumbar adiposity thickness)
S-M (MsAa + MsSI + MsL)/weight Subcutaneous adiposity to mass ratio (total subcutaneous trunk adiposity thickness relative to overall body mass)
V-M (MppA + MiA)/weight Visceral adiposity to mass ratio (total visceral trunk adiposity thickness relative to overall body mass)
MAR-A MsAa/MiA Maximal abdominal ratio A (ratio between subcutaneous and visceral abdominal adiposity)
A-L/BMI [(MsAa + MiA)/MsL]/[weight/(height x height)] Abdominal-to-lumbar adiposity ratio to BMI (ratio between abdominal and lumbar adiposity thickness relative to overall body mass index
A-L/WHR [(MsAa + MiA)/MsL]/(waist circumference/hip circumference) Abdominal-to-lumbar adiposity ratio to WHR (ratio between abdominal and lumbar adiposity thickness relative to the ratio between waist and hip circumferences)
TC-TBA (MsAa + MsSI + MsL)/total body adiposity percentage Total circumference to total body adiposity ratio (total trunk circumference thickness relative to total body adiposity percentage)
  1. MppA maximum pre-peritoneal abdominal adiposity, MsAa maximum subcutaneous abdominal adiposity A, MiA maximum intra-abdominal adiposity, MsSI maximum subcutaneous supra-iliac adiposity, MsL maximum subcutaneous lumbar adiposity