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The deadlift is a weight training exercise in which a loaded barbell or bar is lifted off the ground to the level of the hips, then lowered to the ground. It is one of the three powerlifting exercises, along with the squat and bench press. Deadlift refers to the lifting of dead weight (weight without momentum), such as weights lying on the ground. It is one of the few standard weight training exercises in which all repetitions begin with dead weight. There are several positions one can approach when performing the deadlift, which include the conventional deadlift, squat, and sumo-deadlift. In most other lifts there is an eccentric (lowering of the weight) phase followed by the concentric (lifting of the weight) phase. During these exercises, a small amount of energy is stored in the stretched muscles and tendons in the eccentric phase if the lifter is not flexible beyond the range of motion. Although this exercise uses the hips and legs as the primary movers, it can just as easily be considered a back exercise. Conventional deadlift: The deadlift can be broken down into three parts: The setup, the initial pull or drive, and the lockout.Setup: When performing a deadlift, a lifter will set up in a position that eccentrically loads the gluteus maximus, minimus, biceps femoris, semitendinosus, and semimembranosus while the muscles of the lumbar contract isometrically in an effort to stabilize the spine. Set up behind the bar with it touching or nearly touching the legs.