5.1 The significance of the information to be recorded in a test report allows for exoskeleton safety and performance to be contextualized with the exoskeleton fit to the user. Exoskeleton tests can also be replicated across similar or different exoskeletons by using this practice to record the exoskeleton fit to the user for a test in a standardized way.

5.2 Limitations of the practice are that not all exoskeletons have the same connections to the body and fit to all users, and therefore, fit to the user may change the exoskeleton capabilities. For example, as users vary in size, shape, gender, etc., an exoskeleton that is fit to one user may allow an increase or decrease in torque applied to the arms, legs, etc. as compared to another user, especially users at the upper and lower limits of manufacturer-suggested exoskeleton sizing. Another example is that an exoskeleton that is not fit properly to a user may be uncomfortable, and as a result the user may not perform tasks as long, as fast, as strong/delicately, or many other possible outcomes.

5.3 It is expected that all exoskeleton tests require the exoskeleton to be fit properly to the user according to manufacturer specifications. However, as testing exoskeletons can vary, so can fit to the user, and variations in fit may also be tested. For example, a test may be performed with the exoskeleton not fit properly to the users' legs (for example, longer fit on shorter legs) to evaluate performance changes when the task requires the user to stand on their toes. Should exoskeleton tests be performed with the exoskeleton not fit properly to the user, the test requestor should verify with the manufacturer that the exoskeleton will not harm the user as a result of a bad fit, and provide this information to the test administrator to record on the test report.

5.4 Additional fit and measurement information may be found in Terminology D5219, Practice E3003, and Practice F1731.