Dear Sarah,

Maybe the following papers will help you:

Hallgren RC, Pierce SJ, Sharma DB, Rowan JJ. Forward Head Posture and Activation of Rectus Capitis Posterior Muscles. J Am Osteopath Assoc 2017;117(1):24-31. http://jaoa.org/article.aspx?articleid=2595722

Hallgren RC, Pierce SJ, Prokop LL, Rowan JJ, Lee AS. Electromyographic activity of rectus capitis posterior minor muscles associated with voluntary retraction of the head. Spine J 2014;14(1):104-12. http://www.sciencedirect.com/science/article/pii/S1529943013006864

Hallgren RC, Rowan JJ, Bai P, Pierce SJ, Shafer-Crane GA, Prokop LL. Activation of rectus capitis posterior major muscles during voluntary retraction of the head in asymptomatic subjects. J Manipulative Physiol Ther 2014;37(6):433-40. http://www.jmptonline.org/article/S0161-4754(14)00117-1/abstract

Best wishes from germany,

Martin

Dear Martin,

Thanks a lot!

Kind regards,

Sarah