For the purpose of this chapter the following classes of persons shall be deemed to be engaged in the practice of physical therapy:

1. 1. Persons who treat human ailments by physical therapy as defined in this chapter.
2. 2. Persons who publicly profess to be physical therapists or who publicly profess to perform the functions incident to the practice of physical therapy.

[C66, 71, 73, 75, 77, 79, 81, §148A.2]