DHQWhat does the word aerobic mean?

*Hint- it is a type of exercise

How do muscles work and create movement?Muscles turn energy into motionEverything you do is expressed as muscular

motionThe basic action of any muscle is contractionA muscle is a bundle of cells called fibersA muscle fiber contains myofibrils, which are

cylinders of muscle proteins The proteins allow a muscle cell to contractThe contractions of all muscles are triggered

by electrical impulses

Continued……Muscles have a mixture of two basic types of fibers;

1.Fast twitch muscle fibers – capable of developing greater forces, contract faster, and have greater anaerobic capacity

What are some anaerobic activities?What are some anaerobic activities?

1.2. Slow twitch muscle fibers – develop force slowly, maintain contractions longer, and have higher aerobic capacity

What are some aerobic activities?What are some aerobic activities?

FlexionFlexion Bending parts at a

joint

Examples: Bending at the knee and elbow, bending head forward on the chest

ExtensionExtension

Straightening parts at a joint

Examples:Straightening theleg, elbow, neck

AbductionAbductionMoving a limb away from the midline of the body.

Example:Lifting the arm/leg horizontally away from the body

AdductionAdductionMoving a limb toward the midline of the body.

Example: Returning the arm/leg from the horizontal position to the side of the body.

RotationRotationMoving a part around an axis.

Example: Twisting the head from side to side and twisting the trunk from side to side