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Chapter 10 Management Of Body Composition
HSC 103
54
Science
Undergraduate 1
08/02/2010

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Term
Body Image is?
Definition
Perceptions we have of our bodies.
Term
What is a distorted body image?
Definition
A body image inconsistent with reality.
Term
What does body image tend to become?
Definition
self-image
Term
What is a a convienent way to determine fatness?
Definition
Body Mass Index (BMI)
Term
How is BMI calculated?
Definition
By dividing one's weight in kilograms by the square of one's height in meters.
Term
People with moderate fatness have the lowest risk of what 4 leading causes of death in the U.S.?
Definition
1. Heart disease
2. Cancer
3. Diabetes
4. Stroke
Term
What is visceral fat?
Definition
fat that is within the abdominal cavity.
Term
Visceral fat seems to be related to the health risk of what 4 things?
Definition
1. high blood pressure
2. low HDL's
3. ellevated triglycerides
4. impaired fasting glucose
Term
What is metabolic syndrome?
Definition
When someone meets 3 or more of the criterias of risk because of visceral fat.
Term
In metabloic syndrome, the result of complex endocrine interactions increases the risk of? (4)
Definition
1. atheroscelerosis
2. heart disease
3. stroke
4. diabetes mellitus
Term
What BMI's are considered underweight?
Definition
18.5 or lower
Term
What are the causes of underweight? (6)
Definition
1. genetics
2. malabsorption of nutrients
3. metabloic disorders caused by wasting diseases such as cancer
4. Extreme psychological or emotional distress
5. excessive expenditure of energy because of athletics
6. Voluntarily restricting dietary intake as in anorexia nervosa
Term
What may underweight cause? (6)
Definition
MALFUNCTIONING OF:
1. adrenal glands
2. pituitary
3. thyroid
4. gonads
5. disruption of menstrual cycle
6. decreased immune system functions
Term
What is wasting syndrome?
Definition
Extreme underweight caused by illness
Term
What is essential fat?
Definition
Certain components of body fat that are essential for life.
Term
What is the essential fat in men?
Definition
3%-8% of their body weight
Term
In women the ocncept of essential fat must be expanded to include gender specific fat in their? (3)
Definition
1. breasts
2. pelvic region
3. buttocks
Term
What is the essential fat for women taking into account their gender specific fat?
Definition
12%-14%
Term
What are the healthy levels of total fat range for women?
Definition
25#-30%
Term
What is the apples body type?
Definition
Android body type; biggest around the waist.
Term
What is the pears body type?
Definition
gynoid type; biggest in hips, buttocks, and upper thighs.
Term
What are the waist measurements that put men and women into great risk for various chronic diseases associated with obesity?
Definition
1. Men; more than 40 inches
2. Women; more than 35 inches
Term
What is hyperplasia?
Definition
an increase in the number of cells occuring during the growth spurts accompanying normal development.
Term
What is hypertrophy?
Definition
An increase in the size of cells.
Term
What is densitometry?
Definition
Underwater weighing
Term
What is bioelectric impedance analysis? (BIA)
Definition
A method using a mild eletric charge to estimate lean body mass to determine body fat composition.
Term
Genetic influences related to obesity include what 2 hormones?
Definition
1. leptin
2. ghrelin
Term
What is leptin?
Definition
It inhibits food intake and regulates long-term appetite.
Term
What is ghrelin?
Definition
Produced by the stomach, increases appetite.
Term
What is a set point?
Definition
A natural level (of some characteristic) that the body regulates or defends.
Term
What leads to body size and compostion in a person? (4)
Definition
1. genetic makeup
2. cultural heritage
3. environmental experinces
4. voluntary behavior
Term
Can set points be overidden?
Definition
Yes.
Term
How are set points overidden?
Definition
VOLUNTARY BEHAVIORS:
1. eating
2. exercise
Term
What factors conspire to reduce our levels of lean body mass? (4)
Definition
1. ageing
2. sedentary lifestyles
3. wasting caused by illness
4. dieting
Term
Exercise reduces what 3 risk factors?
Definition
1. hypertension
2. CAD
3. diabetes mellitus
Term
How much aerobic exercise benefits health?
Definition
30 minutes a day for 3 or more times a week.
Term
To develop fitness, how much aerobic exercise is recommended?
Definition
60 minutes a day
Term
A negative body image may influence our?
Definition
health behaviors
Term
If you have a healthy and positive body image we evaluate aspects of opur bodies fairly?
Definition
Realisticly; finding some characteristics positive and others less so.
Term
Most of our evidence of the association between fatness and physical health from?
Definition
epidemiologic studies
Term
What is overweight?
Definition
greater than 110% of desirable weight
Term
What is obesity?
Definition
greater than 120% of desirable weight
Term
What is underweight?
Definition
15%-20% below weight standards.
Term
What serves vital functions such as membrane integrity?
Definition
essential fat
Term
What is wasting syndrome most often associated with? (2)
Definition
1. AIDS
2. HIV
Term
Most pears are?
Definition
women
Term
Most apples are?
Definition
men
Term
If more energy is consumed than expended, fat storage will go on until?
Definition
The fat droplets reach maximum size.
Term
What are 2 other methods of assessing fat level?
Definition
1. triceps skinfold
2. mid-upper arm circumference
Term
How many calories is a pound of fat?
Definition
3500 kcal
Term
Energy balance is deteremined by the relationship between?
Definition
energy intake and energy expenditure
Term
What is leptin produced by?
Definition
adipocytes
Term
The incidence of obesity is inversely related to?
Definition
socioeconomonic status
Term
When do we function best when it comes to eating habits?
Definition
When we eat several times a day spaced between waking hours.
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