MUSCLE MOVEMENTS
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Transcript of MUSCLE MOVEMENTS
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