Flashcards in Chapter 12 - Weight Management: Finding a Healthy Balance Deck (95)
where is the gender-specific essential fat located/involved?
- mammary glands
- pelvic region
- involved in hormone-related functions and pregnancy
what are the 2 ways of measuring body fat?
1) direct measurement
2) indirect measurement
______ measurement of body fat involves grinding tissue
which way of measuring body fat measures fat via chemical analysis
true or false: direct measurement of body fat is impractical for living organisms
direct measurement is used with _____
list 5 methods of indirect measurement of body fat
1) skin fold callipers
2) hydrostatic weighing
3) bod pod
4) bioelectrical impedance
skin fold callipers
measure skin fold thickness to predict or estimate total body fat
what is skin fold calliper testing based on?
based on the assumption that subcutaneous fat is directly related to total body fat
what is the accuracy of skin fold calliper testing?
accuracy is +-3 when performed correctly
determines body density to be used in further equations that calculate percent body fat
what is hydrostatic based on?
based on archimedes' principle of water displacement - an object submerged in water yields a buoyant force equal to the weight of water displaced
to calculate body fat with hydrostatic weighing, what 4 measurements are needed?
1) body weight on land
2) underwater body weight
3) water density at the performed temperature
4) residual lung volume
what is a more accurate measure: hydrostatic weighing or skin fold callipers?
hydrostatic weighing is more accurate
what is a very accurate measure or body fat, but also comes with a high expense?
the bod pod
what can the bod pod do that hydrostatic weighing can not?
may facilitate measuring large or heavy individuals because it does not involve underwater submersion
what does the bod pod use to calculate body fat percentage?
what is bioelectrical impedance based on?
based on differences in electrical conductivity between fat-free mass and fat mass
how is percent body fat calculated in BIA?
percent body fat is calculated from measures of body density determined by passing an electrical current through the body
what is BIA influenced by?
the subjects hydration level
true or false: the more hydrated someone is, the heavier the BIA measurement will be
FALSE: the more hydrated someone is, the leaner the BIA measurement will be
DEXA can be used to determine ___________ and can also measure bone density (bone mineral content)
what is an easy, inexpensive method for determining an individuals healthy body weight?
BMI (Body mass index)
how is BMI calculated?
BMI = Weight (Kg)/[Height (m)]2
what are the 3 general ranges of BMI?
2) healthy or acceptable weight
3) overweight (severe overweight or morbid obesity)
a BMI score above ___ is classified as obese and associated with an increased risk of developing health problems
true or false: health problems are associated with BMI's classified as being within the underweight range
who is the BMI intended for?
men and women aged 20-65
who is BMI strictly not intended for? (list 5)
4) pregnant women
5) very muscular people, such as athletes