Tend uses Direct Vibration Therapy, sometimes known as Focal Vibration therapy. , Tend has a unique pin point tip to access hard to reach parts of the body. , Focal Vibration Therapy (FVT) is a type Vibration Plus Attachment for Theragun Therabody Accessories Therabody US The History of Vibration Therapy: From Ancient Practices to Modern Healing The OMG Pillow Acute Effects of Handheld Vibration Massage on Posterior Shoulder Soft Tissues Published in International Journal of Sports Physical Therapy