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Nathan Goodyear

Fat-free mass index and fat mass index percentiles in Caucasians aged 1898 y - 0 views

www.nature.com/...0802037a.html

FMI FFMI body composition BMI fat mass index

shared by Nathan Goodyear on 27 Jul 16 - No Cached
  • BMI is the sum of FFMI+FMI
  • FMI were significantly higher in elderly subjects as compared to younger ones
  • During menopause and aging39,40 changes in FFM and FM are not adequately picked up by changes in BMI
  • ...8 more annotations...
  • One advantage of FMI, as compared to the BMI concept, is that it amplifies the relative effect of aging on body fat
  • We believe that the definition of obesity based on relative body fat (ie percentage) remains of great value for the definition of obesity. However, in a situation in which a patient is losing weight without substantially changing his/her relative body fat (as is the case with crash diets), the calculation of FMI will quantitatively reveal the amount of body fat store lost.
  • high sensitivity of FMI (respectively FFMI) to a slight change of body fat stores
  • Sarcopenic obesity has been defined as a low FFM associated with a high body fat
  • relative FFM lower than 73% (ie a relative body fat greater than 27%) in men and a FFM lower than 62% (ie a body fat greater than 38%) in women.
  • FMIs greater than 8.2 kg/m2 in men and 11.8 kg/m2 in women would define the 'overfat' status (rather than the overweight range) in terms of fat mass
  • In young women, FMI averaged 5.5 kg/m2 (range 5th-95th percentile: 3.5-8.7 kg/m2) ie 38% higher than in males
  • the average FMI for young men was 4.0 kg/m2
  • Nathan Goodyear on 27 Jul 16
     
    good review of FMI, FFMI, and BMI.
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