Abstract: One aspect of the present disclosure relates to a physical training system for injury prevention and rehabilitation. The training system can include a wearable device in communication with an external device, which can be used to train at least the athlete wearing the wearable device. The wearable device can reduce the number of sensors needed to capture motion data required for the training. For example, the wearable device can include an inertial measurement unit (IMU) device located at a position relative to a joint of an athlete to measure an inertial displacement of the joint and an optical sensor to measure an angle of the joint. The wearable device can include a wireless transceiver to communicate a characteristic of motion of the joint (determined based on data from the IMU and the optical sensor) to an external device.

Abstract: One aspect of the present disclosure relates to a physical training system for injury prevention and rehabilitation. The training system can include a wearable device in communication with an external device, which can be used to train at least the athlete wearing the wearable device. The wearable device can reduce the number of sensors needed to capture motion data required for the training. For example, the wearable device can include an inertial measurement unit (IMU) device located at a position relative to a joint of an athlete to measure an inertial displacement of the joint and an optical sensor to measure an angle of the joint. The wearable device can include a wireless transceiver to communicate a characteristic of motion of the joint (determined based on data from the IMU and the optical sensor) to an external device.

Abstract: A massaging backpack having at least one shoulder strap for massaging an individual which includes at least one massaging unit carried by the shoulder strap, at least one power supply carried by the backpack and connected to the massaging unit, and at least one actuating member carried by the backpack being connected to the massaging unit for actuating the massaging unit when the backpack is worn by the individual so that a massaging sensation is applied to selected areas of the individual.

Abstract: A massaging backpack having at least one shoulder strap for massaging an individual which includes at least one massaging unit carried by the shoulder strap, at least one power supply carried by the backpack and connected to the massaging unit, and at least one actuating member carried by the backpack being connected to the massaging unit for actuating the massaging unit when the backpack is worn by the individual so that a massaging sensation is applied to selected areas of the individual.