study guide Flashcards
(70 cards)
feelings of satiety
state of fullness gratified beyond the point of satisfaction, the opposite of hunger.
hunger hormone
ghrelin
satiety hormone
leptin: assists in weight regulation
BODY FAT PERCENT
Average Americans (what ppl really are):
HEALTHY….
African American:
Asian:
Caucasian:
Top Athletes:
M: 22% F: 32%
M: 12% F: 19%
M: 18% F: 25%
M: 15% F: 22%
M: 3-12% F: 10-18%
juvenile-onset obesity
-infancy and childhood
-increased number of adipose cells
~ have long lifespan and need to store fat making it harder to lose weight.
adult-onset obesity
-adulthood
-larger but fewer adipose cells
~but if weight gain continues # of cells will increase
BMR
~ Minimum energy expended to keep a resting, awake body
alive
~ 60-70% of total energy needs
~ Includes energy needed for maintaining heartbeat,
respiration, body temperature
~ Amount of energy needed for basal metabolism varies
between individuals
BMI
~Underweight: 18.5
~Healthy weight: 18.5-24.9
~Overweight: 25-29.9
~Obese: 30-39.9
~Severely obese: >40
obesity can cause what?
~high blood pressure
~high cholesterol
~type 2 diabetes
~sleep apnea
upper body obesity - apple shape
~ associated with cardiovascular disease, hypertension, type 2 diabetes
~ testosterone and excessive alcohol
~ Abdominal fat is released into the liver and promotes inflammation in the body
~ After menopause, upper-body obesity
more common
~ Waist measurement of > 40” for men
~ Waist measurement of > 35” for women
lower body obesity - pear shape
~ Encouraged by
estrogen and
progesterone
~ Fewer health risks
than upper body
obesity
TEF ~ thermal effect on food
refers to the energy expended by our bodies to digest, absorb, and metabolize the nutrients from the food we consume
increased by larger meals instead of multiple small meals
carbs & protein but low intake
physical activity
any muscle movement that increases energy expenditure
Leisure time physical activity
any activity unrelated to a person’s
occupation
~hiking, walking, biking
BMI v body fat percentage
BMI is a rough estimate of body fat that reflects body weight adjusted for height. Body fat percentage directly calculates a person’s relative body composition without considering the height or weight.
FITT principle
~ (F)requency—the frequency of physical
activity varies with fitness goals
~ (I)ntensity—determining proper intensity
may be based on maximal heart rate
~ (T)ime of activity—whether the total
activity time is an accumulation of
activities or completed all at once
~ (T)ype determines the above
Types of exercise:
-Aerobic
-Anaerobic
-Strength
-Flexibility
Aerobic- jogging, dancing, swimming; body uses oxygen to fuel muscle.
(endurance)
Anaerobic- sprinting, heavy weightlifting; body uses glucose for quick energy
(power)
strength- goal to increase muscle strength; weightlifting, push/pull ups; resistance bands
(muscle)
flexibility- stretching, yoga, Pilates
(movement)
obesity v nature
~identical twins have similar weight after separated at birth
~ our genes
Nature and
Nurture
~ Obesity is nurture allowing nature to express itself
~ Location of fat is influenced by genetics
~Child of obese parents is especially at risk
~ Increased physical activity and moderate calorie intake can promote healthy weight
set-point theory
~body has a natural mechanism that maintains a set body weight after attaining a certain age,
Rating of Perceived Exertion (RPE)
~ How fast you’re breathing.
~ How fast your heart is beating.
~ How tired your muscles are.
~ How much you’re sweating.
energy used during exercise
ATP- energy carrying molecule; immediate direct energy, stores enough energy for 1-3 secs;
Phosphocreatine (PCr)- replenishes ATP; high-energy compound; quick “explosive” exercise
glucose- short to moderate bursts 10 secs- 2mins
fat- fatty acids, triglycerides, long moderate activities 20+ mins
protein- over long duration; or when extreme energy shortage
Healthy Habits discussed that help health regardless of weight
- physical activity
- no smoking/limited drinking
- nutritious dietary intake
- sleep
Anorexia Nervosa
A disorder characterized by intense fear of gaining weight, severely restricted food intake, and distorted body image.