NSC exam 4 Fall 2026 Update with complete solutions
1. What does BMI measure?: the relationship between a person's height and weight
2. BMI (body mass index): a measure of body weight relative to height
3. What does BMI measure?: body fat
4. BMI measurements: Unhealthy underweight for adults is defined as a BMI of less than 18.5, overweight
as a BMI of 25.0 through 29.9, and obesity as a BMI of 30 or more.
5. Is BMI the"gold standard" to use (and if not what is the gold standard mea-
surement)?: No, it isn't the gold standard. DEXA is
6. BMI values have two major drawbacks: they fail to indicate how much of a
person's weight is fat and where that fat is located.:
7. These drawbacks limit the value of the BMI for use with:: *Athletes (because their highly
developed musculature falsely increases their BMI values).
,*Pregnant and lactating women (because their increased weight is normal during child bearing).
*Adults older than age 65 (because BMI values are based on data collected from younger people and because people
"grow shorter" with age).
*Women older than age 50 with too little muscle tissue (they may be overly fat for health yet still fall into the normal
BMI range).Footnote
8. To determine your BMI in pounds and inches:: BMI=weight (lb.) x 703 divided by (height in
inches x2).
BMI =
lbs. X 703 divided by ( in. x 2)
9. To determine your BMI in kilograms:: BMI= weight (kg) divided by (height in meters x 2)
10. A person whose BMI reflects an unacceptable health risk can choose a
desired BMI and then calculate an appropriate body weight.:
11. measuring body composition and fat distribution: A person who stands about 5 feet 10
inches tall and weighs 150 pounds carries about 30 of those pounds as fat. The rest is mostly water and lean tissues:
muscles; organs such as the heart, brain, and liver; and the bones of the skeleton (see Figure 9-5). This lean tissue is
vital to health. The person who seeks to lose weight wants to lose fat, not this precious lean tissue. And for someone
who wants to gain weight, it is desirable to gain lean and fat in proportion, not just fat.
,12. Body fat percentages for people age 20 to 40 years old in the Healthy Weight
BMI range:: Male: 18-21%
Female: 23-26%
, 13. Average U.S. body fat percentages for people age 20 to 40 years old:: Male: 26%
Female: 38%
14. Assessing health:: Health professionals often use both BMI and waist circumference to assess a person's
health risks and monitor changes over time.
15. Three Methods Used to Assess Body Fat:: skin fold measures, waist circumference, DEXA
16. skinfold test: measurement of the thickness of a fold of skin and subcutaneous fat on the back of the arm
(over the triceps muscle), below the shoulder blade (subscapular), or in other places, using a caliper; also called fatfold
test.
17. DEXA (dual-energy X-ray absorptiometry
(absorp-tee-OM-eh-tree): a noninvasive method of determining total body fat, fat distribution, and bone
density by passing two low-dose X-ray beams through the body. Also used in evaluation of osteoporosis. Abbreviated
DEXA.
18. to measure waist circumference:: place a measuring tape around the waist just above the bony
ridge of the hip
1. What does BMI measure?: the relationship between a person's height and weight
2. BMI (body mass index): a measure of body weight relative to height
3. What does BMI measure?: body fat
4. BMI measurements: Unhealthy underweight for adults is defined as a BMI of less than 18.5, overweight
as a BMI of 25.0 through 29.9, and obesity as a BMI of 30 or more.
5. Is BMI the"gold standard" to use (and if not what is the gold standard mea-
surement)?: No, it isn't the gold standard. DEXA is
6. BMI values have two major drawbacks: they fail to indicate how much of a
person's weight is fat and where that fat is located.:
7. These drawbacks limit the value of the BMI for use with:: *Athletes (because their highly
developed musculature falsely increases their BMI values).
,*Pregnant and lactating women (because their increased weight is normal during child bearing).
*Adults older than age 65 (because BMI values are based on data collected from younger people and because people
"grow shorter" with age).
*Women older than age 50 with too little muscle tissue (they may be overly fat for health yet still fall into the normal
BMI range).Footnote
8. To determine your BMI in pounds and inches:: BMI=weight (lb.) x 703 divided by (height in
inches x2).
BMI =
lbs. X 703 divided by ( in. x 2)
9. To determine your BMI in kilograms:: BMI= weight (kg) divided by (height in meters x 2)
10. A person whose BMI reflects an unacceptable health risk can choose a
desired BMI and then calculate an appropriate body weight.:
11. measuring body composition and fat distribution: A person who stands about 5 feet 10
inches tall and weighs 150 pounds carries about 30 of those pounds as fat. The rest is mostly water and lean tissues:
muscles; organs such as the heart, brain, and liver; and the bones of the skeleton (see Figure 9-5). This lean tissue is
vital to health. The person who seeks to lose weight wants to lose fat, not this precious lean tissue. And for someone
who wants to gain weight, it is desirable to gain lean and fat in proportion, not just fat.
,12. Body fat percentages for people age 20 to 40 years old in the Healthy Weight
BMI range:: Male: 18-21%
Female: 23-26%
, 13. Average U.S. body fat percentages for people age 20 to 40 years old:: Male: 26%
Female: 38%
14. Assessing health:: Health professionals often use both BMI and waist circumference to assess a person's
health risks and monitor changes over time.
15. Three Methods Used to Assess Body Fat:: skin fold measures, waist circumference, DEXA
16. skinfold test: measurement of the thickness of a fold of skin and subcutaneous fat on the back of the arm
(over the triceps muscle), below the shoulder blade (subscapular), or in other places, using a caliper; also called fatfold
test.
17. DEXA (dual-energy X-ray absorptiometry
(absorp-tee-OM-eh-tree): a noninvasive method of determining total body fat, fat distribution, and bone
density by passing two low-dose X-ray beams through the body. Also used in evaluation of osteoporosis. Abbreviated
DEXA.
18. to measure waist circumference:: place a measuring tape around the waist just above the bony
ridge of the hip
