A method of performing a fit test on an actuator unit coupled to a user. The method includes determining a first configuration of the actuator unit generated in response to actuating the actuator unit while the user is performing one or more movements for the fit test； determining a change from the first configuration of the actuator unit while the user is performing the one or more movements for the fit test； determining that the change from the first configuration corresponds to an improper fit of the actuator unit coupled the user； and generating an improper fit indication that indicates improper fit of at least leg actuator units coupled the user.
