PE+Vocabulary

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 * acceleration** - An increase in the speed (velocity) of a movement.
 * active aerobics** - Continuous, vigorous activities that get the heart beating fast enough to build cardiovascular fitness; for example, jogging, aerobic dance.
 * active recreation** - Recreational activites that are vigorous enough to increase the heart rate enough to build cardiovascular fitness.
 * active sports** - Sports that are vigorous enough to increase the heart rate enough to build cardiovascular fitness.
 * aerobic** - "With oxygen"; activity is aerobic when the body can supply enough oxygen to keep going for long periods of time.
 * agility** - The ability to change body positions quickly and keep the body under control when moving.
 * anaerobic** - "Without oxygen"; it refers to activities for which the body can't supply enough oxygen to keep going for long periods of time (for example, sprinting).
 * balance** - The ability to keep the body in a steady position while standing or moving.
 * ballistic stretching** - Exercises that cause muscles and tendons to get longer than normal;caused by movements such as bouncing or bobbing.
 * basal metabolism** - A term used to describe the amount of energy the body expends when in an inactive or basic (basal) state.
 * body composition** - The combination of all of the tissues that make up the body such as bones, muscles, organs, and body fat.
 * body fatness** - The percentage of total body weight that is composed of fat.
 * body image** - A person's feelings about his or her body; a good body image requires positive feelings about one's body, including feelings about the way one looks.
 * body mass index** (BMI) - A formula that determines a healthy body weight based on height.
 * calipers** - An instrument used to measure thickness; skinfold calipers measure the thickness of fat folds beneath the skin.
 * calories** - A unit of measure for energy; in this book it refers to the energy contained in foods. For example, a soft drink with sugar typically contains 150 calories.
 * carbohydrates** - Substances in food that provide energy; sugars and starches.
 * cardiovascular fitness** - The ability of the heart, lungs, blood vessels, and blood to work efficiently and to supply the body with oxygen.
 * CDC** - The abbreviation for the Centers for Disease Control Prevention, a government agency dedicated to promoting good health among United States citizens.
 * center of gravity** - The center of your body weight.
 * cool-down** - Exercise designed to help you recover after physical activity; includes cardiovascular activity followed by streching exercises.
 * coordination** - The ability of body parts to work together when you perform and activity.
 * cramp** - An involuntary contraction of a muscle that can be painful.
 * deceleration** - A reduction in velocity or speed.
 * discretionary foods** - A term used in MyPyramid for foods that do not fit in any single category such as fruits, vegetables, meats, and milk products; refers to foods such as ketchup, mustard, and sauces used with other foods.
 * eating disorder** - A dangerous (and potentially life-threading) condition associated with eating too little and often exercising too much.
 * efficiency** - the ability to perform with little wasted energy or wasted time.
 * energy** - Available power; in this book it refers to the power available to cause the body's muscles to contract.
 * energy balance** - Taking in the same number of calories (energy intake) as you expend (energy expenditure).
 * energy expenditure**- The calories that the body expends in performing its normal functions an physical activities.
 * energy intake**- The calories one consumes from food.
 * essential fat**-The minimum percentage of body fat that is necessary to have good health.
 * exercise**- Activity designed to build one or more of the health-related parts of physical fitness.
 * fats**-Oily substances in food from animal and plant sources that provide energy and that are necessary for other bodily functions.
 * feedback**- Information from an instructor or another source that helps one change a performance skill.
 * first-class levers**- A type of lever in which fulcrum (or pivot point) is between the resistance (or weight) and the effort (or force) such a seesaw or the foot when walking.
 * Fitness-gram**- A national fitness test that includes tests for all parts of health-related fitness
 * Fitness summary**- A chart or table that describes a person's fitness for every part of health-related fitness; useful as a basis for setting personal goals an din creating a physical activity plan.
 * FITT**- A collection of letters (acronym) used to describe the formula for building the fitness:F for frequency, I for intensity, T for time, and T for type.
 * Flexibility exercises**- A type of physical activity designed to build flexibility by stretching the muscles and tendons longer then normal.
 * Flexibilit**y- The ability to move all body parts and joints freely.
 * Flex-ion**- it is a movement that reduces the angle of a joint; for example when you flex the elbow the angle of the lower arm and the upper arm get smaller.
 * Force**- In this book force refers to a cause of body movement resulting form the contraction of the muscles.
 * Friction**- Resistance to motion caused by one surface rubbing against another.\
 * Gains**- Activities that have simple rules and often a winner or loser but that may or may not require the use of large muscles; capture the flag is an active game completer games are active games.