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Physical therapist assistants (PTA) and physical therapist aides work under the supervision of physical therapists, helping patients who are recovering from injuries regain movement and manage chronic pain. Further, they develop exercise programs that will help patients improve cardiovascular function, regain flexibility, and build muscle mass. All states require physical therapist assistants to have an associates degree from an accredited physical therapist assistant program. These programs typically last 2 years, and include courses in algebra, English, anatomy, physiology, and psychology. PTAs gain hands-on experience during supervised clinical work rotations, and may earn certification in cardiopulmonary resuscitation (CPR), and other first-aid skills.

Licensure typically requires graduation from an accredited physical therapist assistant program and passing the National Physical Therapy Exam, administered by the Federation of State Boards of Physical Therapy. Physical therapist aides, on the other hand, are not required to be licensed but earn less salary. Some states require that applicants pass additional state-administered exams, undergo a criminal background check, and be at least 18 years old. Employment of physical therapist assistants and aides is projected to grow 40 percent from 2015 to 2025, much faster than the average for all occupations. The median annual wage for physical therapist assistants and aides was $42,980 in May 2015.