1. Muscles Types & Muscle Fibers
WEIGHT TRAINING
Muscles Types
&
Muscle Fibers

2. Muscle Types
You have 3 Types of Muscles:
Smooth
Cardiac
Skeletal

3. Smooth Muscle
Makes up the walls of internal organs such as the stomach and blood vessels
Classified as an involuntary muscle because you cannot consciously control their movements

4. Cardiac Muscle Your heart is made of cardiac muscle.
Classified as an involuntary muscle because you cannot consciously control your heart beating.

5. Skeletal Muscle Are attached to the bones and make movement possible.
These are the muscles you used for movement
Classified as voluntary muscles because you control them.

6. Types of Muscle Fibers
Muscle fibers are muscle cells, which are long, thin, and cylinder-shaped
There are 3 types of muscle fibers:
Slow-Twitch
Fast-Twitch
Intermediate-Twitch

7. Slow-Twitch Fibers Contract at a slow rate
These fibers have good endurance and are involved in cardiovascular activities.
Aerobic Exercises
Long distance runners, biking

8. Fast-Twitch Fibers Muscle contracts fast
Muscle fibers you use for strength activities
Anaerobic Exercises
Power lifting, sprinters, agility drills

9. Intermediate-Twitch Fibers
Have the characteristics of both slow- and fast-twitch fibers
They contract fast and have good endurance
You can use them for activities that involve both strength and cardiovascular fitness
Athletic Competition

10. The types of fibers that your muscles are made of are determined by your genes, and those genes are hereditary.
You can not change the fiber types.
You can increase the strength and endurance of your muscles by proper training

11. Movement of Muscle Concentric Movement: Eccentric Movement:
The contraction or shortening of the muscle. Muscle is being strengthened, the hard stage of the lift.
Eccentric Movement:
The lengthening of the muscle, the lighter stage of the lift.