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Shoulder Muscles - Deltoids
The deltoideus muscles ( also deltoids
or delts ) have its name from its delta shape
( triangular shape ) and
is located on top of the shoulder joint. Its function is to elevate
the arm.
The side head does most of the work until the arm reaches 60 degrees.
From
there, the front and the rear head do most of the work.
The deltoid muscle forms the round contour of the human shoulder.
Find exercises and information about other muscles at weight training main.
Description: Shoulder Muscles - Deltoids
- The shoulder muscles consist of three deltoid
heads.
- Pars Clavicularis - Front Head - Front Deltoids
For example when you lift something in front of you.
( especially when the thumb points up )
Typical Exercise: Front Dumbbell Raise
- Pars Acromialis - Side Head - Mid Deltoids
Works when you lift something sideways.
Typical Exercise: Side Lateral Raise.
- Pars Spinalis - Rear Head - Rear Deltoids
Typical Exercise: Reverse
Fly
- A typical shoulder exercise very good for overall
strength and volume is the military press.
When you sit upright, you work your entire shoulder.
But when you adjust
the back lean lower, you work the front head of your shoulders
more
than the other heads. If you lean back too far, its not a shoulder
exercise anymore.
Instead you are bench
pressing on an incline bench.
Trainer advice: Shoulder Muscles - Deltoids
- When you do front
dumbbell raises or side
lateral raises, it´s not recommended to lift
the weight
over horizontal level. The function of the deltoid is to lift
the arm and
press the upper arm bone into the shoulder joint. When
you lift the arm too high,
the angle from which the deltoid works
and the weight can be bad for the joint.
Instead you can military
press or do handstand
push ups.
When you do a military press, the triceps and other muscles also
contribute a
part of the work and give you some more stability.
- One of the best exercise to train the rear heads
of your deltoids is the reverse
fly.
- To avoid shoulder problems, train all 3 heads
of your deltoids.
- The only shoulder exercise that's adequate for
heavy weights is the military press.
Exercises: Shoulder Muscles - Deltoids
Related Topics: Shoulder Muscles - Deltoids
Videos & Pictures: Shoulder Muscles - Deltoids
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