Rear Deltoid Head

rear deltoid head

The rear deltoid head is located to the back of the shoulder, and is one of three heads which composes the deltoid (shoulder) muscle. It is also referred to as the posterior deltoid head.

The important point to note about the rear deltoid is its role during shoulder movements. Unlike the other two deltoid heads, it is not active during shoulder flexion or abduction, and as such is not recruited during overhead and flat pressing exercises, or front or side raises.

Due to its role being primarily to extend the shoulder, the posterior head is best targeted with exercises such as rows and rear flys. An athlete can either include these exercises within his/her shoulder session, or do what many others find more effective; look to target the rear deltoid head during their back session which involves similar movements.


Other names

  • Posterior deltoid head
  • Rear deltoid head
  • Back of the shoulder
  • Deltoid
  • Deltoideus
  • Rear delts
  • Delts
  • Caps
Dr. Steroids

Introducing our esteemed author at SteroidsLive, Johnathan Reed, a seasoned fitness enthusiast with a passion for empowering others on their journey to optimal health and performance. With years of experience in the fitness industry and a background in sports science, Johnathan brings a wealth of knowledge and expertise to his writing. Dedicated to providing accurate, evidence-based information, he strives to educate and inspire readers to achieve their fitness goals safely and effectively. Through his engaging and informative articles, Johnathan aims to make a positive impact on the lives of individuals seeking to transform their bodies and improve their overall well-being. Join him on the path to success at SteroidsLive, where fitness meets knowledge.