Two biofeedback units made by different manufacturers are available for use in the training room. The athletic trainer has been using the same unit to work on muscle strengthening with an injured...

Two biofeedback units made by different manufacturers are available for use in the training room. The athletic trainer has been using the same unit to work on muscle strengthening with an injured patient throughout his rehabilitation process. Unfortunately, that generator has broken, and he is forced to use the other one. Can comparisons be made from one unit to another?