Learn About The Various Forms Of Therapeutic Exercise And How It Relieves Pain And Promotes Healing

By Coleen Torres


Injuries to the muscles and other soft tissues of the body often require a course of physical therapy in order for the patient to regain normal body movement. Therapeutic exercise is an important component in most physical therapy regimens and it can effectively aid in not only easing pain, but also restoring range of motion, balance, strength, and flexibility.

The physical therapist will evaluate the patient's condition by conducting an assessment of his or her ability to move, and taking a medical history. This information will be used to formulate a specific course of exercises which become progressively more challenging as the patient improves. Once the pain is overcome, the focus will be on restoring the body's strength, endurance, and flexibility.

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.

After the patient has demonstrated that he or she is capable of safely completing flexibility and range of motion activities, it is time to move on to strength and endurance training. Resistance is gradually increased, which has the effect of strengthening muscle and connective tissues which have damaged, naturally improving strength.

Strength exercises are classified as static or dynamic. A static activity does not require movement of the joint, the tension and resistance are equal, and the muscle fibers remain the same length throughout the movement. The angle is the key aspect which makes the difference in this case, so patients are advised to vary the angle of each set, making sure they hold it for several seconds each time, as this is what builds strength.

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.

Variable-resistance and manual resistance exercises work based on the principle that the muscles produce a limited force when the joints are positioned in extremes of the range of motion. The main difference is that the latter involves the therapist manually applying resistance, and the former relies on the use of a machine that accounts for proper joint alignment and applies resistance relative to force. With isotonic movement, the muscles are lengthened by external force which imposes a change on the joint's angle, this is seen with many weight machines, ankle weights, and free weights.

An isokinetic exercise is performed at a fixed speed and the resistance is equal to the force exerted by the muscle. There are machines built to provide movement of this kind, which match the force to the user's degree of muscle resistance, and can be adjusted in terms of velocity, concentric and eccentric action.




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