Exercise guide
Shoulder - Transverse Abduction
- Beginner
- Compound
- Timed hold
- Shoulders
This isolation exercise targets the posterior deltoids and scapular stabilizers to improve posture and shoulder joint integrity. It is highly effective for developing the often-neglected rear shoulder muscles using only bodyweight resistance.
Reviewed by the Crucible Fit team · Updated June 2026
Muscles worked
Setup
- Stand tall with your feet shoulder-width apart and your core engaged.
- Raise your arms directly in front of your chest at shoulder height.
- Position your hands with palms facing each other and maintain a soft bend in your elbows.
How to do it
- Exhale as you slowly move your arms out to the sides in a wide horizontal arc until they are in line with your torso.
- Squeeze your shoulder blades together at the peak of the movement, feeling the tension in your upper back.
- Inhale as you slowly return your arms to the starting position under control.
- Maintain a steady tempo of 2 seconds out, a 1-second squeeze, and 2 seconds back.
Form checklist
- Keep your shoulders depressed and away from your ears throughout the movement.
- Ensure your arms stay at shoulder height; do not let them drop toward your hips.
- Keep your torso still and avoid arching your lower back to gain range of motion.
- Maintain a consistent, slight bend in the elbows to keep the focus on the deltoids.
Pro tips
- Focus on leading the movement with your elbows rather than your hands to better isolate the rear deltoids.
- Rotate your thumbs slightly upward (external rotation) to increase engagement of the rotator cuff and posterior deltoid.
- Imagine you are trying to pull a heavy resistance band apart to create internal tension even without equipment.
Make it harder
- Perform the movement while lying face down on the floor (prone) to work against gravity.
- Hold the peak contraction for 3-5 seconds on every repetition to increase time under tension.
Frequently asked
- What muscles does the shoulder - transverse abduction work?
- The shoulder - transverse abduction primarily targets the deltoids and rotator cuff, and also works the serratus anterior as secondary muscles.
- What equipment do you need for the shoulder - transverse abduction?
- The shoulder - transverse abduction requires no equipment — just your body weight.
- Is the shoulder - transverse abduction good for beginners?
- Yes. The shoulder - transverse abduction is a beginner-friendly movement and a strong foundation to build on.