The regional effect of spinal manipulation on the pressure pain threshold in asymptomatic subjects: a systematic literature review

Table 8 Significant difference of outcomes between -groups of 3 studies that compared a spinal manipulation to an inactive control included in a systematic review on spinal manipulation and pressure pain threshold

Regions	First Author, Year [ref]	General quality classification of articles	Significant difference of outcomes between groups (Yes/No)
Cervical	Fernandez de la Penas, 2007 [19]	Medium	Yes
Cervical	Oliveira Campelo, 2010 [22]	High	Yes
Thoracic	Bishop, 2011 [25]	Low	No

ISSN: 2045-709X