Quiz 3: Obesity and Arthritis Flashcards
What is body composition?
the body’s relative amounts of fat mass to fat-free mass
Fat needed in males v.s. fat needed in females
M: 3-5%
F: 8-12%
What is BMI?
a person’s “should be” weight in comparison of how weight should be proportional to height
What are the health risk sizes for men and women concerning waist circumference?
M: >40
F: >35
What is the difference(s) between overweight and obesity?
Overweight: total body weight above a recommended range for good health. 10% or more over recommended weight (BMI over 25)
Obesity: severely overweight and over fat. 20% or more over recommended weight (BMI over 30)
The storage of excess nutrient intake as fat is…
Positive energy balance (gain weight)
The use of stored body fat as energy is…
Negative energy balance (lose weight)
1lb of fat is how many calories?
3,500 kcals
What are the causes of obesity?
- heredity
- genetics (how body burns fat)
- behaviors (phys act, diet, meds)
- environment (food access, education skills, marketing)
What are the two types of obesity shapes?
Android: upper body (mainly men)
Gynoid: lower body (mainly women)
What are the different tests to measure obesity? (6)
- Skin fold
- Bioelectrical impedance
- Hydrostatic weighing
- Bod Pod
- Dual-Energy X-ray absorpiometry (DEXA)
- BMI
What is bioelectrical impedance?
determines the electrical impedance, or opposition to the flow of an electric current through the body tissues which can then be used to calculate an estimate of total body water (TBW)
- accuracy can be affected by mood or hydration status
What is hydrostatic weighing?
measures the density of your body. (displacement of water)
What is the bod pod?
subject enters a sealed chamber that measures their body volume by displacement of air.
What is a DEXA scan?
gold standard most accurate two x-ray beams with differing energy levels are aimed at the patient’s bones/ When soft tissue absorption is subtracted out, the BMD can be determined
What is skin fold test?
folds of the skin are measured with a caliper.
What is the #1 method for weight loss?
Diet