Chapter 6

4. The heart rate to aim for while performing aerobic exercise that leads to optimal cardiorespiratory fitness;varies by age.
6. Chemicals found mainly in the brain that affect emotions and relieve pain
8. The ability to quickly change your bodies momentum and direction.
11. A condition in which a female's menstrual cycle is abnormally absent.
12. Standard which states that gradual increase of a physical demand on the body will improve fitness
13. A term that describes how efficiently the cardiovascular and respiratory systems deliver oxygen to the muscles during prolonged physical activity.
14. Type of fitness that improves a person's performance in a particular sport
16. Broad term that describes structured exercise as well as other activities that use energy.
18. Different types of fitness, such as strength and flexibility.
19. The body's ability to meet daily physical demands.
20. Activity involving the use of oxygen to fuel processes in the body.

1. Training in different activities to improve performance in a sport and reduce the risk of injury
2. A quality that is measured by how much energy the body uses per minute during physical activity
3. Standard which states FITT factors should be increased over time to improve fitness.
5. A health problem characterized by three conditions
7. Type of fitness used to easily perform daily activities.
9. Term that describes a type of physical activity that is planned, structured, and purposeful.
10. Standard which states that exercising a particular component leads to improvements in the fitness of only that component
15. Activity occurring in the absence of oxygen.
17. Activities such as laying down or sitting that require little energy.