From: The regional effect of spinal manipulation on the pressure pain threshold in asymptomatic subjects: a systematic literature review
Regions
First author, Year [ref]
General quality classification of articles
Significant difference of outcomes between groups (Yes/No)
Cervical
Fernandez de la Penas,2008 [18]
High
No
Cervical and Lumbar
Jordon, 2016 [23]