Transverse Abduction

Four-step standing transverse shoulder abduction exercise showing arms extended forward, moving outward, shoulder blades squeezing together and arms returning forward

TARGET MUSCLES:

  • Posterior deltoid: Rear shoulder muscle primarily responsible for moving the upper arms outward and backward during transverse abduction.
  • Infraspinatus and teres minor: Rotator cuff muscles that assist with horizontal shoulder abduction and stabilization.
  • Middle trapezius: Upper back muscle that retracts the shoulder blades as the arms move outward.
  • Rhomboids: Upper back muscles that assist with drawing the shoulder blades together.

START POSITION:

  • Stand upright with the feet approximately shoulder-width apart and the knees relaxed.
  • Extend both arms straight forward at approximately shoulder height, with the hands gently closed into fists.
  • Keep the shoulders relaxed and maintain a neutral spine.
  • Engage the abdominal muscles to stabilize the torso throughout the movement.

PROCEDURE:

  • Step 1: Begin with both arms extended straight forward at shoulder height, as illustrated.
  • Step 2: Slowly move both arms outward to the sides in a horizontal arc, keeping them approximately at shoulder height.
  • Step 3: Gently squeeze the shoulder blades together, emphasizing contraction of the upper back muscles without shrugging the shoulders or arching the lower back.
  • Step 4: Slowly bring both arms forward to the original starting position, allowing the shoulder blades to return naturally.
  • Repeat using slow, controlled movements.

NOTES:

  • Precaution: Avoid forcing the arms excessively backward or moving beyond a comfortable shoulder range of motion.
  • Precaution: Do not shrug the shoulders, arch the lower back or use rapid, jerking movements.
  • Beginner variation: Perform the movement with the elbows slightly bent or the arms positioned somewhat below shoulder height if this is more comfortable.
  • Advanced variation: Use a light resistance band held between the hands to provide resistance as the arms move outward, while maintaining controlled shoulder movement.