What is Deep Tissue Massage?

According to a specific research report published in Health Technology and Informatics Research in 2012, two different massage treatments for chronic back pain were compared, especially for 26 chronic back pain patients aged 60-75. They are divided into two groups. The first group uses therapeutic massage, and the second group uses deep tissue massage. Each massage was 30 minutes for 10 days, and the treatment they had received was stopped during the study period. Finally, it was found that the deep tissue massage group had more improvement in pain than the therapeutic massage.