Overview Physical therapy is a dynamic profession with an established theoretical and scientific base and widespread clinical applications in the restoration, maintenance, and promotion of optimal physical function. Physical therapists are health care professionals who help individuals maintain, restore, and improve movement, activity, and functioning, thereby enabling optimal performance and enhancing health, well-being, and quality of life. Their services prevent, minimize, or eliminate impairments of body functions and structures, activity limitations, and participation restrictions . Physical therapy is provided for individuals of all ages who have or may develop impairments, activity limitations, and participation restrictions related to (1) conditions of the musculoskeletal, neuromuscular, cardiovascular, pulmonary, and/or integumentary systems or (2) the negative effects attributable to unique personal and environmental factors as they relate to human performance.
A representative example of the use of block scope is the C code shown here, where two variables are scoped to the loop: the loop variable n , which is initialized once and incremented on each iteration of the loop, and the auxiliary variable n_squared , which is initialized at each iteration. The purpose is to avoid adding variables to the function scope that are only relevant to a particular block – for example, this prevents errors where the generic loop variable i has accidentally already been set to another value. In this example the expression n * n would generally not be assigned to an auxiliary variable, and the body of the loop would simply be written ret += n * n but in more complicated examples auxiliary variables are useful.