Weight management - Assessing obesity

4 important questions on Weight management - Assessing obesity

What is the BMI of a normal obese and morbidly obese person?

Normal: BMI = 20-25
Obese: BMI = 30
Morbidly Obese: BMI = 40

What is the critics on BMI?

It does not take into account the muscle and fat distribution

What are the methods to determine the body fat level?

  • Fat fold or skin test: Thickness of fat layer to amount of body fat. Measures skin thickness (low accuracy)
  • Hydrodensitometry: The under water weight. Body mass / body volume. Obese people will have a lower body density then musseled people.
  • Bioelectrical impedance: sends impulses and measures the return + fat + resistance. (not accurate)
  • Dual energy X-ra absorption (DEXA): Uses X-ray to determon body composition. Very accurate.
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What is intra-abdominal/visceral fat?

Located within the abdominal cavity connected to large waist., central/abdominal obesit. Buik vet.

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