NSC exam 4 Questions With All Correct Answers
• What does BMI measure? correct answer -the relationship between a
person's height and weight
BMI (body mass index) correct answer -a measure of body weight relative
to height
What does BMI measure? correct answer -body fat
BMI measurements correct answer -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.
Is BMI the"gold standard" to use (and if not what is the gold standard
measurement)? correct answer -No, it isn't the gold standard. DEXA is
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. correct answer -
These drawbacks limit the value of the BMI for use with: correct answer -
*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
To determine your BMI in pounds and inches: correct answer -
BMI=weight (lb.) x 703 divided by (height in inches x2).
BMI =
___lbs. X 703 divided by (____ in. x 2)
To determine your BMI in kilograms: correct answer -BMI= weight (kg)
divided by (height in meters x 2)
,A person whose BMI reflects an unacceptable health risk can choose a desired
BMI and then calculate an appropriate body weight. correct answer -
measuring body composition and fat distribution correct answer -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.
Body fat percentages for people age 20 to 40 years old in the Healthy Weight
BMI range: correct answer -Male: 18-21%
Female: 23-26%
Average U.S. body fat percentages for people age 20 to 40 years old: correct
answer -Male: 26%
Female: 38%
Assessing health: correct answer -Health professionals often use both BMI
and waist circumference to assess a person's health risks and monitor
changes over time.
Three Methods Used to Assess Body Fat: correct answer -skin fold
measures, waist circumference, DEXA
skinfold test correct answer -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.
DEXA (dual-energy X-ray absorptiometry
(absorp-tee-OM-eh-tree) correct answer -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.
, to measure waist circumference: correct answer -place a measuring tape
around the waist just above the bony ridge of the hip
KEY POINTS: correct answer -*Central adiposity can be assessed by
measuring waist circumference.
*The percentage of fat in a person's body can be estimated by using skinfold
measurements, radiographic techniques (DEXA), or other methods.
*Body fat distribution can be revealed by radiographic techniques.
how much body fat is ideal: correct answer -No single body composition or
weight suits everyone; needs vary by gender, lifestyle, and stage of life
adipose tissue (fat) correct answer -the body's fat tissue,
consisting of masses of fat-storing cells and blood vessels to nourish them.
obesity correct answer -excess body weight associated with increased risk
of mortality and chronic diseases; a body mass index of 30 or higher.
(Today, an estimated 69 percent of the adults in the United States are
overweight or obese)with over 35 percent falling into the obese range
correct answer -
The problem of underweight, while affecting fewer than 2 percent of adults in
the United States, also poses health threats to those who drop below a healthy
minimum. correct answer -Footnote: People at either extreme of body
weight face increased risks.
What Are the Risks from Underweight? correct answer -Deficient body
fatness threatens survival during a famine or when a person must fight a
disease.
wasting correct answer -the progressive, relentless loss of the body's
tissues that accompanies certain diseases and shortens survival time.
What are the risks of having too much body fat? correct answer -chronic
diseases, inflammation, obesity
Chronic diseases from having too much fat: correct answer -Arthritis.
Breathing problems (sleep apnea).
• What does BMI measure? correct answer -the relationship between a
person's height and weight
BMI (body mass index) correct answer -a measure of body weight relative
to height
What does BMI measure? correct answer -body fat
BMI measurements correct answer -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.
Is BMI the"gold standard" to use (and if not what is the gold standard
measurement)? correct answer -No, it isn't the gold standard. DEXA is
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. correct answer -
These drawbacks limit the value of the BMI for use with: correct answer -
*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
To determine your BMI in pounds and inches: correct answer -
BMI=weight (lb.) x 703 divided by (height in inches x2).
BMI =
___lbs. X 703 divided by (____ in. x 2)
To determine your BMI in kilograms: correct answer -BMI= weight (kg)
divided by (height in meters x 2)
,A person whose BMI reflects an unacceptable health risk can choose a desired
BMI and then calculate an appropriate body weight. correct answer -
measuring body composition and fat distribution correct answer -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.
Body fat percentages for people age 20 to 40 years old in the Healthy Weight
BMI range: correct answer -Male: 18-21%
Female: 23-26%
Average U.S. body fat percentages for people age 20 to 40 years old: correct
answer -Male: 26%
Female: 38%
Assessing health: correct answer -Health professionals often use both BMI
and waist circumference to assess a person's health risks and monitor
changes over time.
Three Methods Used to Assess Body Fat: correct answer -skin fold
measures, waist circumference, DEXA
skinfold test correct answer -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.
DEXA (dual-energy X-ray absorptiometry
(absorp-tee-OM-eh-tree) correct answer -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.
, to measure waist circumference: correct answer -place a measuring tape
around the waist just above the bony ridge of the hip
KEY POINTS: correct answer -*Central adiposity can be assessed by
measuring waist circumference.
*The percentage of fat in a person's body can be estimated by using skinfold
measurements, radiographic techniques (DEXA), or other methods.
*Body fat distribution can be revealed by radiographic techniques.
how much body fat is ideal: correct answer -No single body composition or
weight suits everyone; needs vary by gender, lifestyle, and stage of life
adipose tissue (fat) correct answer -the body's fat tissue,
consisting of masses of fat-storing cells and blood vessels to nourish them.
obesity correct answer -excess body weight associated with increased risk
of mortality and chronic diseases; a body mass index of 30 or higher.
(Today, an estimated 69 percent of the adults in the United States are
overweight or obese)with over 35 percent falling into the obese range
correct answer -
The problem of underweight, while affecting fewer than 2 percent of adults in
the United States, also poses health threats to those who drop below a healthy
minimum. correct answer -Footnote: People at either extreme of body
weight face increased risks.
What Are the Risks from Underweight? correct answer -Deficient body
fatness threatens survival during a famine or when a person must fight a
disease.
wasting correct answer -the progressive, relentless loss of the body's
tissues that accompanies certain diseases and shortens survival time.
What are the risks of having too much body fat? correct answer -chronic
diseases, inflammation, obesity
Chronic diseases from having too much fat: correct answer -Arthritis.
Breathing problems (sleep apnea).
