A single bout of physical activity (treadmill)immediately prior to the dental examination reduces anxiety in patients with dental phobia.

The primary objective of the trial is to assess the anxiolytic efficacy of 30 minutes aerobic treadmill exercise versus placebo exercise in subjects experiencing high anxiety prior to a minor dental dental procedure.

Primary efficacy endpoint:

Change in the visual analogue scale (VAS) for anxiety before and after the intervention prior to the elective minor dental procedure

Inclusion Criteria:

• Male or female outpatients 18 years of age or older
• A total score of 12 points or more on the Dental Anxiety Scale at screening and baseline evaluations
• Scheduled appointment for an elective minor dental procedure
• Informed consent

Exclusion Criteria:

• Pregnant or lactating women
• Current diagnosis of any other DSM-IV, with the exception of other phobic disorders, social anxiety disorder or dysthymia
• Serious medical disorders which put subjects at risk if they have to exercise 30 minutes at 70% VO2max