HUN 2201 Exam 3 Questions with Verified Solutions Graded A+
What are the 5 methods to estimate body composition? - Answers 1. Hydrodensitometry
2. Dual energy X-ray absorptiometry (DEXA)
3. Bioelectrical impedance analysis
4. Air-displacement (Bod Pod)
5. Skinfolds
Which are considered the "gold standard" methods? - Answers 1. Hydrodensitometry
2. DEXA scan
3. BOD POD
Describe hydrodensitometry - Answers using water displacement to see the density of a
specific object (or person)
What are the two functions of the DEXA scan? - Answers 1. To assess bone density
2. Also gives very accurate percentage of body fat
Describe Bioelectrical impedance - Answers the use of an electrical current that travels through
fat-free mass (muscle, water); it will be hindered through fat mass
tests how fast it takes to get from one place to another (slower means more fat)
Why is bioelectrical impedance not considered a "gold standard" technique? - Answers 1.
Someone's hydration status could affect the results
2. it would only give the body composition representing one region in the body
Describe the BOD POD - Answers The relationship between pressure and volume is used to
derive body volume and calculate body density
measures air displacement
What is the BOD POD called that is used for infants? - Answers the pea pod
What is the purpose of skinfold calipers? - Answers You would take pinches of skin from
different areas of the body and you would pull the fat away from the muscle underneath; then
you could get a reading on how thick the fat is
, Why are skinfold calipers not considered a "gold standard" technique? - Answers they lie within
a 2-5% error margin from the gold standard techniques; there could be simple human error
What are some advantages of skinfold measurements? - Answers 1. indicator of energy
reserves
2. quick, inexpensive, portable, most useful with serial measurements
How do you use a skinfold measurement for women to asses body composition? - Answers You
would measure the triceps, suprailiac, and thigh. Once you have the measurements, you add
them together.
What about for men? - Answers You would measure the chest, abdomen, and thigh. Once you
have the measurements, you add them together.
What is the skinfold sites-measurement technique termed as? - Answers the Jackson and
Pollock protocol
Once you add the skinfold measurements up for either men or women, what do the results tell
you? - Answers what percentage body fat that person has
Lean body mass also means? - Answers Fat-free
Once you know someone's percent body fat, how do you figure out how many pounds of fat the
individual has? - Answers you would multiply the total pounds by the percent body fat to get
pounds of fat.
What is the difference between apple shape and pear shaped fat patterns? - Answers Apple
shape: more weight above the waist
pear shape: more weight below the waist
What is considered the most low-tech measurement for body composition? - Answers Waist
and hip measurements
How do you calculate the waist to hip ratio? (upper body obesity) - Answers waist measurement
divided by the hip measurement
For Apple shaped fat patterned people, where would you measure the waist and hip? - Answers
Waist would be one inch above the navel and hip would be at the greater trochanters
For pear-shaped fat patterned people, where would you measure the waist and hip? - Answers
Waist at the narrowest point of the waist and the hip at the widest point of your hips
TF
What are the 5 methods to estimate body composition? - Answers 1. Hydrodensitometry
2. Dual energy X-ray absorptiometry (DEXA)
3. Bioelectrical impedance analysis
4. Air-displacement (Bod Pod)
5. Skinfolds
Which are considered the "gold standard" methods? - Answers 1. Hydrodensitometry
2. DEXA scan
3. BOD POD
Describe hydrodensitometry - Answers using water displacement to see the density of a
specific object (or person)
What are the two functions of the DEXA scan? - Answers 1. To assess bone density
2. Also gives very accurate percentage of body fat
Describe Bioelectrical impedance - Answers the use of an electrical current that travels through
fat-free mass (muscle, water); it will be hindered through fat mass
tests how fast it takes to get from one place to another (slower means more fat)
Why is bioelectrical impedance not considered a "gold standard" technique? - Answers 1.
Someone's hydration status could affect the results
2. it would only give the body composition representing one region in the body
Describe the BOD POD - Answers The relationship between pressure and volume is used to
derive body volume and calculate body density
measures air displacement
What is the BOD POD called that is used for infants? - Answers the pea pod
What is the purpose of skinfold calipers? - Answers You would take pinches of skin from
different areas of the body and you would pull the fat away from the muscle underneath; then
you could get a reading on how thick the fat is
, Why are skinfold calipers not considered a "gold standard" technique? - Answers they lie within
a 2-5% error margin from the gold standard techniques; there could be simple human error
What are some advantages of skinfold measurements? - Answers 1. indicator of energy
reserves
2. quick, inexpensive, portable, most useful with serial measurements
How do you use a skinfold measurement for women to asses body composition? - Answers You
would measure the triceps, suprailiac, and thigh. Once you have the measurements, you add
them together.
What about for men? - Answers You would measure the chest, abdomen, and thigh. Once you
have the measurements, you add them together.
What is the skinfold sites-measurement technique termed as? - Answers the Jackson and
Pollock protocol
Once you add the skinfold measurements up for either men or women, what do the results tell
you? - Answers what percentage body fat that person has
Lean body mass also means? - Answers Fat-free
Once you know someone's percent body fat, how do you figure out how many pounds of fat the
individual has? - Answers you would multiply the total pounds by the percent body fat to get
pounds of fat.
What is the difference between apple shape and pear shaped fat patterns? - Answers Apple
shape: more weight above the waist
pear shape: more weight below the waist
What is considered the most low-tech measurement for body composition? - Answers Waist
and hip measurements
How do you calculate the waist to hip ratio? (upper body obesity) - Answers waist measurement
divided by the hip measurement
For Apple shaped fat patterned people, where would you measure the waist and hip? - Answers
Waist would be one inch above the navel and hip would be at the greater trochanters
For pear-shaped fat patterned people, where would you measure the waist and hip? - Answers
Waist at the narrowest point of the waist and the hip at the widest point of your hips
TF
