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Ch 17
Exercise, Rest, Recreation
| Question | Answer |
|---|---|
| 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 |
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iVisKei
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