A control method for a motion evaluation system including a sensor attached at a predetermined wearing position below a knee of a subject, and a server device that generates an evaluation report based on a detection result of the sensor, the method comprising:
- a first step of causing the sensor to detect motion information indicating a motion below the knee of the subject;
- a second step of causing the sensor to transmit the motion information to the server device;
- a third step of causing the server device to acquire length information based on a height of the subject;
- a fourth step of causing the server device to estimate a movement of a foot of the subject from the received motion information and the acquired length information;
- and
- a fifth step of causing the server device to perform an evaluation on the estimated movement of the foot.