Endogenous Modulation of Pain and Stretch Tolerance

Endogenous Modulation of Pain - the Tolerance to Stretch

This study investigates the role of two endogenous inhibitory mechanisms; exercise-induced hypoalgesia (EIH) and a conditioning painful stimulus (CPM) on passive joint range of motion, passive resistive torque and pain sensitivity. The study is a randomized, repeated-measures cross-over study.

The increase in range of motion following stretching is related to changes in the tolerance to stretch. The mechanistic relationships behind these changes in subject sensation are however unknown but could be related to endogenous modulation of pain.

Inclusion Criteria:

• Eligibility for participation included the absence of any pain or other conditions that might affect the somatosensory system.

Exclusion Criteria:

• Substance abuse, History of neurological or mental disabilities, Lack of ability to comply with instructions, Delayed onset of muscle soreness.