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 harm the joint. When you do a military presses, the triceps and other muscles do a part of the work and give the joint 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.
• Gain shoulder strength with military presses or handstand push ups.

 

Exercises: Shoulder Muscles - Deltoids

• Standing Barbell Military Press
• Side Lateral Raise
• Front Dumbbell Raise
• Plate Front Raise
• Reverse Fly
• Cable Internal Rotation
• Arm Circles

 

Related Topics: Shoulder Muscles - Deltoids

• Skeletal Muscles System
• Chest Muscles
• Back Muscles
• Biceps
• Triceps
• Forearm Muscles
• Leg Muscles
• Abdominal Muscles

 

Videos & Pictures: Shoulder Muscles - Deltoids

• None

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