Linguistically, the terms come physiotherapy and physical therapy from the Greek word physis (= nature) from. Basic principles of physiotherapy is to exercise stimuli to the organism, which in its natural environment are already available. Such stimuli can include the application of heat or cold, or the execution of specific active or passive movements. All of these stimuli, ie heat, cold, and movements of the body already knows from everyday life. In contrast, the stimuli appear in physical therapy but not random and undirected one on the organism, but also consciously controlled and targeted manner. One such example is the local application of refrigeration in inflammatory processes.
Finally, the stimuli to fulfill a purpose or a therapeutic aim: They should produce an active response of the organism. These responses come from the natural range of physical reactions. It’s automatic, for example, the skin 
responds to a cold stimulus at first with white blaze, later reactive with redness and warming. Such natural reactions controls the involuntary nervous system. Does it have to respond again to the same stimulus, in his answer will change sooner or later something. To be therapeutically effective the stimulus, however, affect more than once – series, he must, wherever possible, term treatment are used.
Besides the direct response and change in this response over time, the physical therapy procedures have usually also indirect effects. For example, the repeated application of heat and cold stimuli, alternating the body acclimatise to colds.
prevalent because of the age structure of population of course – even nervous, cardiovascular, metabolic or respiratory disorders are physical therapy to influence prices.
talk of a physical therapy and physiotherapy in the same breath and with it the same thing, others turn a difference. Even the legislature is not entirely conclusive: on one hand he speaks of a “physical therapist law,” the other, he says elsewhere, “Physical Therapy”.