To Perfect Body

Injuries can occur for a number of reasons, such as from playing sports or being involved in an accident. When the soft tissues of the body are injured, it can result in impairment of normal movement, which may be painful and limited. Physical therapy is often needed to put the patient back on the road to recovery, and this usually involved the practice of therapeutic exercise as a means to restore strength, balance, flexibility, and range of motion.

The injured person will visit a physical therapist who will take a medical background from him or her and evaluate the ability to move in various ways. Based on this, the therapist will put together a customized therapy schedule of increasingly challenging exercises to help eliminate pain, and restore normal endurance, flexibility, and strength.

Physical therapy exercises are classified according to the nature of the movement involved and the impact it has on the muscles and joints. Passive exercises help restore normal movement in joints and require little to no work from the muscles as the force is applied to them, either manually or from a continuous passive motion unit or similar mechanical device. In contrast, active exercise calls for muscular involvement, with or without assistance, in a manner which improves joint movement and neuromuscular control.

Other activities are prescribed to help patients regain strength and endurance in the muscles which have been injured. This is normally added to the program once the patient can safely perform basic flexibility and range-of-motion movements without help. Progressive resistance is added to the routine at a steady rate to gradually build back lost strength in the muscles, tendons, ligaments, and bones, which is the body's natural response.

Strength training moves are categorized as either dynamic or static. The latter are movements that don't require articulation of the joints, which means the length of muscle fibers is not affected and muscular tension and resistance are in a state of equilibrium. The angle of static moves is what contributes to strength development, performing them using multiple angles and holding each move for several seconds is most effective.

Dynamic exercises imply movement on the part of the joints and muscles and may be further categorized into manual, variable-resistance, isokinetic, and isotonic movements. These types of activities result in the concentric and eccentric, or lengthening and shortening of muscles which generate force during movement. The repeated stretching of the muscle-tendon bundles increases tensile strength.

Isotonic movements are those which lengthen the muscle by means of an externally applied force that imposes a change on the angle of the joint. Examples include the use of free weights, ankle weights, and weight machines. Variable-resistance exercises involve limited force production by the muscles when the joints are in extreme positions of range-of-motion. There are machines to apply resistance relative to force with proper joint alignment. Manual resistance is similar except that it is performed with the therapist's assistance rather than a machine.

With isokinetic exercises, the resistance and muscle force are equal, and they are performed with a fixed speed. Specially designed fitness machines provide a level of force commensurate with the user's muscle resistance, and the balance of concentric/eccentric action and velocity can normally be adjusted as well.