Autonomic Effects of T4 Mobilization in Asymptomatic Subjects

Autonomic Effects of T4 Mobilization in Asymptomatic Subjects: Randomized Clinical Trial

The purpose of this study is to determine whether passive accessory intervertebral mobilization applied to the fourth thoracic vertebra produces autonomic effects.

Asymptomatic subjects will be recruited to this study. Pressure pain threshold, heart rate, heart rate variability and skin conductance will be measured before, immediately after and fifteen minutes after the intervention.

Subjects will be randomized into three groups: Passive accessory intervertebral mobilization one, passive accessory intervertebral mobilization two and placebo group.

The researcher that will do the intervention will be blinded to the outcomes measures, and the researcher that will do the measurements will be blind to the intervention.

Inclusion Criteria:

• Asymptomatic subjects
• Aged between 18 - 40 years old
• Portuguese readers and writers

Exclusion Criteria:

• History of lesion or surgery to the spine