Does Massage Help Reduce Blood Pressure?

My business is in the inner city. There is an over whelming number of African Americans who suffer with high blood pressure. I know there are many contributing factors. However I am finding that many clients recently diagnosis with high blood pressure have very tight soleus muscle. As trigger points are released and  their muscle relaxes their blood pressure seems to normalize.  I am attending a very big health fair on Saturday sponsored by a national personality and I wanted to find out if anyone else has had this experience before I offer massage as an option to help lower blood pressure to potential clients.