Final answer:
The statement is true; physical therapy assistants execute the treatment plans established by physical therapists, who use their knowledge of physics and body mechanics to improve patient functioning.
Step-by-step explanation:
Physical therapy assistants indeed carry out the treatment plans created by the physical therapists, which makes the statement (A) True. Physical therapists are highly trained professionals with a master's degree or doctorate, specializing in the mechanics of body movements and often focusing on sports injuries. The goal of a physiotherapist is to improve physical functioning and minimize functional impairments. This is accomplished by understanding muscle impairments, assessing patient capabilities, and developing a program to enhance these capabilities through exercises that can apply specific forces and torques to revive muscles and joints. Knowledge of physics is essential in physical therapy to understand the mechanics of muscle contraction, energy release, and chemical reactions within the body to make informed decisions during treatment.