BODY CONDITION ESTIMATION SYSTEM AND SHOE

Using a new method, understanding of a body state is enabled. [0002] A body state estimation system (18) includes a sensor module (16) that detects an inclination around a certain axis of a shoe (10), and an estimation unit (20) that estimates an inclination state of the body of a wearer of the shoe (10) based on a detection result from the sensor module (16). The estimation unit (20) estimates, for example, a heel valgus angle, an ankle dorsiflexion angle, and a knee flexion angle of the wearer, using a regression model. With such a system, a state of the body can be grasped.