An assistance apparatus (100) includes wires (110) that couple an upper body belt (111) to be worn on an upper body of a user to a first knee belt (112a) and a second knee belt (112b) to be worn on a left knee and a right knee of the user, respectively, and a motor (114). In a case of assisting the user in moving to turn left, the motor generates a tension larger than or equal to a first threshold value in each of a second wire (110a2) and a fourth wire (110a4) in a period of 65% or more and 100% or less of a first gait phase of a left leg of the user and a period of 0% or more and 20% or less of a second gait phase of the left leg, and generates a tension larger than or equal to the first threshold value in each of a sixth wire (110a6) and an eighth wire (110a8) in a period of 65% or more and 100% or less of a first gait phase of a right leg of the user and a period of 0% or more and 20% or less of a second gait phase of the right leg.
