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essential fat
fat incorporated in various tissues of the body, critical for normal body functioning
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adipose tissue
tissue in which fat is stored. fat cells
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subcutaneous fat
fat located under the skin
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visceral fat
fat located around major organs; also called intraabdominal fat
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percent body fat
the percentage of total body weight that is composed of fat
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overweight
body weight above the recommended range for good health
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obesity
severely overweight, characterized by an excessive accumulation of body fat
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which fat is more harmful? visceral or subcutaneous?
visceral
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obesity _________ mortality rates and can reduce life expectancy by ___-___ years
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waist measurement of more than ___ inches for men and ___ inches for women is associated with increased risk of disease
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amenorrhea
absent or infrequent menstruation, sometimes related to low levels of body fat and excessive quantity or intesity of exercise
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body mass index
a measure of body weight correlating highly with more direct measures of body fat, calculated by dividing total body weight (in kilograms) by the square of body height (in meters)
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most accurate way to calculate percent body fat; 2nd most accurate way
- autopsy
- underwater weighing
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skinfold measurement
used to assess body composition. measure the thickness of skin folds at several different sites on the body
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caliper
what you use to measure skinfolds
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bioelectrical impendance analysis
sends a small electrical current through the body to measure the body's resistance to it. another way to measure percent body fat
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waist circumference has been found to be a better indicator of abdominal fat than_________
waist to hip ratio
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7 steps to developing a personal fitness plan
- 1. set goals
- 2. select activities
- 3. set a target frequency, intensity, and time (FITT) for each activity
- 4. set up a system of mini-goals and rewards
- 5. include lifestyle physical activity in your program
- 6. develop tools for monitoring your progress
- 7. make a commitment
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5 things to consider when putting together activities for a fitness program
- fun and interest
- your current skill and fitness level
- time and convenience
- cost
- special health needs
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FITT principle
- Frequency
- Intensity
- Time
- Duration
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FITT principle for cardiorepiratory endurance training
- Frequency: 3-5 days per week
- Intensity: 55/65-90% max heart rate
- Time: 20-60 mins
- Type: continuous rhythmic activities using large muscle groups
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FITT principle for strength training
- Frequency: 2-3 nonconsecutive days
- Intensity: sufficient resistance to fatigue muscles
- Time: 8-12 reps 1 or more sets
- Type: resistance exercises for all major muscle groups
**** exercises that use body weight for resistance also build strength and muscle endurance****
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to help keep your program on track set up a system of
goals and rewards
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as part of your fitness program plan, specify ways to
be more active during your daily routine
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8 parts for putting your plan in action
- 1. start slowly and increase fitness gradually
- 2. find and exercise buddy
- 3. ask for support from others
- 4. vary your activities (cross training)
- 5. cycle the duration and intensity of your workouts
- 6. adapt to changing environments and schedules
- 7. expect fluctuations and lapses
- 8. choose other healthy lifestyle behaviors
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nutrition
the science of food and how the body uses it in health and disease
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essential nutrients
substances the body must get from foods because it cannot manufacture them at all or fast enough to meet its needs. these nutrients include proteins, fats, carbs, vitamins, minerals, and water
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macronutrient
an essential nutrient required by the body in relatively large amounts
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micronutrient
an essential nutrient required by the body in minute amounts
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digestion
the process of breaking down foods into compounds the gastrointestinal tract can absorb and the body can use
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kilocalorie
a measure of energy content in food; aka calorie
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protein
an essential nutrient that forms important parts of the body's main structures (muscles and bones) as well as blod, enzymes, hormones, and cell membranes; also provides energy
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the 6 classes of essential nutrients
- 1. proteins
- 2. carbohydrates
- 3. fats
- 4. vitamins
- 5. minerals
- 6. water
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triglyceride
fat with a molecule of glycerol and 3 fatty acid chains
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difference between saturated and unsaturated fat
- saturated is animal fat
- unsaturated is plant fat
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amino acids
the building blocks of proteins
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legumes
vegetables such as dried beans and peas that are high in fiber and are also important sources of protein
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hydrogenation
a process that produces a mixture of saturated fatty acids and standard and trans forms of unsaturated fatty acids
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trans fatty acid (trans fat)
a type of unsaturated fat produced during the process of hydrogenation; trans fats have an atypical shape that affects their chemical activity
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cholesterol
a waxy substance found in the blood and cells and needed for synthesis of cell membranes, vitamin D, and hormones
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low-density lipoprotein
blood fat that transports cholesterol to organs and tissues, excess amounts result in the accumulation of fatty deposits on artery walls (bad cholesterol)
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High-density lipoprotein
blood fat that helps transport cholesterol out of the arteries, thereby protecting against heart disease (good cholesterol)
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types of fatty acids
- saturated: animal fats, butter cheese
- trans: deep fried foods, stick margarine
- monounsaturated: plants and nuts
- Polyunsaturated fats are
- omega 3 and omega 6: fish oils etc
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carbohydrate
an essential nutrient: sugars, starches, and dietary fiber are all carbs
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glucose
a simple sugar that is the body's basic fuel
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glycogen
a starch st ored in the liver and muscles
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whole grain
the entire edible portion of a grain such as wheat, rice, or oats
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glycemic index
a measure of how a particular food affects blood glucose levels
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to reduce sugar, limit
soft drinks, candy, desserts, and sweetened fruit drinks
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dietary fiber
nondigestible carbs provided by plants. helps you poop
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functional fiber
nondigestible carbs either isolated from natural sources or synthesized, may be added to foods and dietary supplements
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total fiber
the total amount of dietary fiber and function fiber in the diet
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soluble (viscous) fiber
fiber that dissolves in water or is broken down by bacteria in the large intestine
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insoluble fiber
fiber that does not dissolve in water and is not broken down by bacteria in the large intestine
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vitamins
- carbon-containing substances needed in small amounts to help promote and regulate chemical reactions and processes in the body
- they are organic
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what do vitamins do
they help unleash the energy stored in carbs, proteins, and fats
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antioxidant
substances that protects the body. binds oxygen, dontates electronsk, repairs damage to molecules
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minerals
inorganic compounds needed in relatively small amounts for the regulation, growth, and maintenance of body tissues and functions
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anemia
a deficiency in the oxygen-carrying material in the red blood cells
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osteoporosis
bones become brittle and thin and break easily due to insufficient calcium intake
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how much water are we composed of?
what does water do?
- 50 - 60%
- helps regulate body temperature, transport substances around the body, lubricates and cushions
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are supplements regulated by the FDA
no. the FDA does not authorize or test dietary supplements or require a demonstration of their safety before they are put on the market
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pathogen
A microrganism that causes disease
- E. Coli comes from meat
- Salmonella comes from eggs and poultry
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do food additives pose a health hazard?
no because the levels used are well below any that could produce toxic effects
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four basic food safety principles
- Clean: hands, surfaces, etc
- Separate: raw, cooked and ready-to-eat foods
- Cook: foods to safe temperature
- Chill: refrigerate perishable foods promptly
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genetic factors
influence body size & shape, body fat distribution, & metabolic rate. also effect the ease with which weight is gained as a result of overeats and where extra weight is added
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resting metabolic rate
energy required to maintain vital body functions, including respiration, heart rate, body temperature, and blood pressure, while the body is at rest
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