Kyphosis and dysphagia -- subset of cervical dysphagia

Dysphagia Associated with Cervical Spine and Postural Disorders (2013, Dysphagia )

Dysphagia in individuals with Kyphotic – Lordotic Posture 
page 5 has an anatomy diagrams for curved spine
Agnes Gradowski and Susan Graves propose (page 6):

1. Upturned head position -> elongation and stretch of anterior neck muscles 
2. Prolonged muscle stretch ->  weakness  
3. Weak anterior neck muscles -> worse dysphagia