Isometrics is one form of strength training. These exercises are performed in a stationary position to ensure that the angle of the joints and length of stretch of muscles does not change during the period of contraction. This may be accomplished by working against an immovable object such as a wall or using resistance to challenge the muscles.
Isometrics uses two classes to describe the activity. The first is known as overcoming isometric exercises. The object of the activity is for the joint to remain in the same position while pushing against a stationary object to work that muscle group. The second is known as yielding isometric exercises. In this type of isotonic muscle contraction, the key to success is the use of resistance training. This involves pulling while holding the muscles and joints in a static position. In the yielding method the approach will cause the muscles to work and build muscle strength and tone.
One advantage to isometrics is that very little (if any) equipment is required. A simple isometric exercise involves using the bodies’ own musculature as the stationary object. One example is raising the arm to shoulder length and then bending at the elbows, bring the palms of the hands together; the muscles of each are working against each other. There are other simple forms of isometrics that one can do in the home with ease. Using a door-frame to push against is just one example. If you already have free weights they can be used in the isometric workout. The weight would be held in a fixed position for a certain amount of time. Isometric training is scientifically proven method of exercise that can produce results in a very short time.