Lecture 13 Delts

Overview of Deltoid Training

  • Discussion on deltoids as the final topic of upper body training; glutes will be covered next week.

  • Importance of understanding basic training concepts without overcomplicating the process.

Introduction to Deltoids

  • Types of Deltoids: Anterior, medial (middle), and rear deltoids.

  • Key Insertion Point: Deltoid tuberosity on the humerus (upper arm bone) is where the deltoids insert, located on the anterolateral bony prominence.

  • Variability in Muscle Insertions: Individuals may have different lengths of the deltoid muscle insertion; this is a morphological difference, not an indicator of muscle mass.

Anatomy of the Deltoid

  • Origins:

    • Lateral third of the clavicle

    • Acromion

    • Spine of the scapula

  • Common Injuries: AC joint separations occur frequently in contact sports.

    • Training deltoids has aesthetic, strength, and shoulder health benefits.

Deltoid Functions and Actions

  • Primary Actions:

    • Flexion and Extension: Movement of the shoulder joint through pressing movements.

    • Abduction: Lifting the arm away from the body—misunderstood often as raising the arm up.

    • Internal and External Rotation: Contributions by the anterior and rear deltoids in shoulder rotation.

Training Considerations for Deltoids

  • Anterior Deltoid:

    • Often gets sufficient stimulation from pressing movements like incline bench presses but can still benefit from isolation training.

  • Medial Deltoid:

    • Most commonly trained for aesthetic purposes; popular in programs seeking shoulder width.

  • Rear Deltoid:

    • Many people feel they neglect this area; key for creating a balanced shoulder and upper back appearance.

Training Modalities

  • Choosing Equipment: Cables vs. Dumbbells

    • Cables allow for continuous tension and can improve shoulder health and stability.

    • Dumbbells are effective for shoulder strength overall, including the entire rotator cuff.

Importance of Shoulder Function

  • Emphasis on maintaining shoulder joint stability through targeted exercises.

  • Y Raise and Cable Front Raise: Suggests they offer benefits not solely limited to anterior deltoid training but also enhance scapular function and mobility.

Variability in Training Techniques

  • Abduction Techniques: Emphasizing the correct action of moving radially from the body rather than just moving vertically.

  • Line of Pull Considerations: Important for targeting specific muscle segments through various angles during training.

Practical Training Tips

  • Execution: Ensure that during lateral raises, the arm is directed outward to engage the target deltoid effectively.

  • Volume Management: Understand the number of exercises necessary to train the deltoids effectively, avoiding unnecessary complexity.

Conclusion - Final Thoughts on Deltoid Training

  • Strengthening deltoids is vital for shoulder health, stability, and athletic performance.

  • Upcoming focus on glutes, emphasizing understanding when and why to use specific training modalities.

  • Homework: Experiment with different deltoid exercises in the gym; reflect on what feels good and why.