This article shall not apply to the following classes of individuals, and, except as provided in subsection (5) of this section, neither an establishment nor a technician permit shall be required of such persons while engaged in the performance of the duties of their respective professions:
(1) Physicians, surgeons, nurses, chiropractors, osteopaths and physical therapists who are duly licensed to practice their respective professions in the state, and massage technicians working under the supervision of such duly licensed physicians, surgeons, chiropractors, osteopaths, and physical therapists;
(2) Trainers of any amateur, semiprofessional or professional athlete or athletic team;
(3) Hospitals, nursing homes, or persons working in any such establishments;
(4) Barbers or cosmetologists lawfully carrying out their particular occupation or business, and holding a valid, unrevoked license or certificate of registration issued by the state;
(5) Athletic clubs whose primary use is recreation and training and where massage comprises not more than ten percent of the square footage of the establishment shall not be required to obtain an establishment permit; however, any massage technician engaged in massage at such establishment shall be required to obtain a technician permit. (Ord. No. 1269, § 3 (part).)