Isometric Tension Phase

The isometric tension phase is a unique physiological unit of muscle work, which is characterized by temporary freezing of contraction and complete disappearance of muscle tension. This phenomenon is used to perform a number of exercises using isometric tension, for example, butterfly, downward-facing dog, cat, and is also actively used in the training of boxers, volleyball players, and shooters. All exercises that use the isometric phase must be performed with the highest possible tension and stretching of the muscles, in which their maximum contraction is achieved. In this case, it is important to keep the muscle in a constantly tense state without adding additional load, ranging from 5 seconds to one minute, depending on the level of fitness of the trainee. Isometric contractions are an important component of endurance and strength exercises that reduce the risk of injury, and are also widely used in yoga poses to increase flexibility.