Loading...
  • Dual Energy X-ray A
  • Results for some four- and eight-electrode instruments tested found poor limits of agreement and in some cases systematic bias in estimation of visceral fat percentage, but good accuracy in the prediction of resting energy expenditure (REE) when compared with more accurate whole-body magnetic resonance imaging (MRI) and dual-energy X-ray absorptiometry (DEXA). (wikipedia.org)
  • weight
  • BIA actually determines the electrical impedance, or opposition to the flow of an electric current through body tissues which can then be used to estimate total body water (TBW), which can be used to estimate fat-free body mass and, by difference with body weight, body fat. (wikipedia.org)
  • mass
  • Dehydration is a recognized factor affecting BIA measurements as it causes an increase in the body's electrical resistance, so has been measured to cause a 5 kg underestimation of fat-free mass i.e. an overestimation of body fat. (wikipedia.org)
  • Moderate exercise before BIA measurements lead to an overestimation of fat-free mass and an underestimation of body fat percentage due to reduced impedance. (wikipedia.org)
  • For example, moderate intensity exercise for 90-120 minutes before BIA measurements causes nearly a 12 kg overestimation of fat-free mass, i.e. body fat is significantly underestimated. (wikipedia.org)
  • More recently, segmental BIA has been developed to overcome inconsistencies between resistance (R) and body mass of the trunk. (wikipedia.org)
  • different
  • To compare different methods of body composition analyses with the gold standard 4-compartment monitoring to determine accuracy and validity of those alternative, but less labor-intensive techniques. (clinicaltrials.gov)
  • water
  • By the 1970s the foundations of BIA were established, including those that underpinned the relationships between the impedance and the body water content of the body. (wikipedia.org)