kin chapters 8-11 Flashcards
chapter 8
nutrition, health, & fitness
nutrition
the study of food and nutrients
nutrients
- provide energy
- support growth
- regulate metabolism
macronutrients
- carbs
- fats
- protein
- water
micronutrients
vitamins & minerals
carbohydrates
- main source of fuel for the brain
* key energy source for muscular contraction
simple carbohydrates
- normal brain function
* glucose, fructose, galactose
complex carbohydrates
- glycogen (easily available)
- starch (fuel source)
- fiber (not a fuel source)
unsaturated fats
- monounsaturated and polyunsaturated
- do not increase blood cholesterol levels
- found in plant sources
- omega-3 fatty acid lowers both cholesterol and triglycerides (found mainly in fish)
saturated fats
- solid at room temperature
- come from animal and plant sources
- trans fatty acids contribute to heart disease and can increase cholesterol
proteins
- major part of lean tissue
- serves as the structural unit to build and repair tissue
- regulate metabolism/protect from disease
- 4kcals per gram
complete protein
- present only in animals foods and soy products
* contain all essential amino acids
incomplete protein
- present in vegetable sources
* missing one or more essential amino acid
water
- macronutrient needed in the highest quantity
- 60-70% of your body
- regulates body temp, digestion, nutrient absorption, blood formation, and waste elimination
- losing as little at 5% can cause the body to go into distress, more than 15% can be fatal
- adults should consume 12-16 cups per day
vitamins
- regulate growth and metabolism
- water soluable: B & C
- fat soluable: A,D,E,K
minerals
- elements that help the body function
* 3 key minerals: CALCIUM, IRON, SODIUM
osteoporosis
calcium deficiency disease
anemia
iron deficiency health problem
hypertension
- high blood pressure
* tied to too much sodium
iron
- essential component of red blood cells
* women menstruating, pregnant, or nursing
calcium
- essential for building bones & teeth
- important for pregnant or lactating women
- may help prevent prostate & colon cancer
- critical for children and teens
food allergy
an adverse immune reaction to food
food intolerance
adverse reaction to a specific food that is not caused by the immune sytem
chapter 9
achieving optimal body weight
range of optimal body fat
- 8-19% for men
* 21-32% for women
genetics & hormones
- appetite control center; hypothalamus in brain
- monitors fat/sugar levels in blood and hormone receptors
- physiological causes of obesity = release of hormones leptin and ghrelin
environmental factors
- eating habits
* diet & exercise
leptin
decreases appretite
ghrelin
increases appetite
energy balance
*calories in vs calories out
resting metabolic rate (RMR)
amount of energy expended while sedentary
exercise metabolic rate (EMR)
amount of energy expended during exercise
moderate intensity exercise
50-70% VO2 max = optimal fat burning
optimal weight loss
burning 250 calories and decreasing caloric intake 250 calories per day