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Ch 17

Exercise, Rest, Recreation

Aerobic exercise Repetitive, nonstop activity that raises the breathing and heart-rate.
Anaerobic exercise Intense physical activity that lasts only from a few seconds to a few minutes, during which muscles use up more oxygen than the body can supply.
Body composition The amount of body fat compared to lean tissue, such as muscle and bone.
Cardiorespiratory endurance The ability of a person's heart, blood vessels, and lungs to distribute nutrients and oxygen and to remove wastes.
Endorphins Chemicals produced in the brain that help give a sense of satisfaction and pleasure.
Flexibility The ability to use a muscle throughout its entire range of motion.
Isokinetic exercise Exercise that involves moving a muscle through a range of motion against a resistance that changes.
Isometric exercise Exercise in which muscles contract but very little body movement takes place.
Isotonic exercise Exercise that involves the contraction and relaxation of muscles through the full range of their motion.
Muscular endurance The ability of muscles to keep working for an extended time.
Muscular strength The capacity of a muscle or group of muscles to exert or resist a force.
Physical fitness The ability of the heart, blood vessels, lungs and muscles to work together to meet the body's needs.
Cool-down A period of milder exercise at the end of an exercise period that allows the body and heart rate to return slowly and safely to their resting states.
Maximum heart rate The heart's top speed; the heat rate when a person has exercised to the point of exhaustion.
Target heart rate The approximate heart rate a person needs to maintain during aerobic exercise in order to benefit from the workout.
Warm-up A five to ten minute period of mild exercise that prepares the body for vigorous exercise.
Circadian rhythm A 24-hour cycle of behavior patterns that some living things, including humans, exhibit.
Insomnia Difficulty in falling or staying asleep.
Narcolepsy A disorder of REM sleep in which the person falls asleep suddenly without warning for short periods of time.
Non-rapid eye movement sleep (NREM) The stage of sleep during which the eyes move very little and the body gradually reaches its state of deepest relaxation.
Rapid eye movement sleep (REM) The stage of sleep during which the eyes flicker rapidly behind closed eyelids and the person dreams.
Sleep apnea A disorder in which breathing stops for short periods during sleep and then resumes suddenly.
Swimming, running, riding a bike and brisk walking are examples of _________ exercise? Aerobic
This type of exercise usually improves flexibility, strength, and sometimes speed, at which muscles work. Anaerobic
During vigorous exercise, cells within your brain produce greater amounts of _____________. Endorphins
Created by: iVisKei