Abstract: A therapeutic sleeve device apparatus has a flexible sleeve shaped to be worn around the arm of the user. The device has an array of accelerometers disposed on or within the flexible sleeve to physically associate with positions on the arm of the user. Each array of accelerometers has a sample rate that can be configured for sensing body movement during a movement activity. A power source and a data collection system are operably connected to the array of accelerometers. The data collection system has a means for receiving data from the array of accelerometers and processing that data into a storable format.