The squat or cuclilla ( depending on the degree of flexion of the knees and hips, being higher in the cuclilla [" greater depth "] ) It is one of the basic strength training exercises. It works directly thigh, hip and buttock muscles, and strengthens the bones, ligaments and tendons of the legs and hips. Long considered a vital exercise to develop the strength and volume in the muscles of legs and buttocks, has been the subject of considerable controversy in recent years, due to the charge by some trainers that the squat increases the probability of lumbar injury and rodilla.1 Consequently, many authors suggest that modified forms of the squat is practice. Other authors, however, disputed the claims of risk and defend the use of the traditional way of practicing the squat, 2 using a good technique.The squat is one of the three movements comprising Powerlifting. It is an excellent exercise for the development of legs, considered by some authors as the main.