Kinesiology Of Overhead Press
While the so called "king" of the upper body lifts is the bench press, a very important lift for explosive upper body strength is the shoulder, or military, press. Focusing on more the more athletic oriented deltoids rather than the physique-enhancing chest, the military press is a staple of all athletic work-outs. The shoulders are made up of eleven muscles, of which the deltoids are the most important. The "delts" are actually composed of three separate parts or "heads." The anterior deltoid is found on the front part of the shoulder and is used when raising the upper arm forward; the middle deltoid is located on the side of the shoulder and is involved when lifting the upper arm sideways (away from the body); the posterior deltoid resides on the back of the shoulder and draws upper arm backwardThere are several variations in this lift, including standing or back-supported seated versions. The shoulder press can also be executed using dumbbells, a barbell, or some type of exercise machine. This paper will concentrate and describe the seated, barbell version. To perform this movement, sit down and place your feet flat on the floor. Grasp the bar and space your hands slightly wider than shoulder width apart. The bar s
The anterior and lateral deltoid and supraspinatus muscles now eccentrically contract, providing a slowing process and control rather than an explosive lift. The shoulder is still abducted. The shoulder girdle downwardly rotates as the serratus anterior and the trapezius I, II and IV eccentrically contract. The elbow flexes as the triceps eccentrically contract in a smooth manner to control the weight as it returns to its original resting position on the pectoral muscles and clavicle. The wrist remains extended, the radia-ulna joint remains pronated and the hand is still flexed around the barbell. Going against gravity, a concentric contraction of the anterior and lateral deltoid and supraspinatus muscles begins the lift. The shoulder remains abducted. The shoulder girdle remains upwardly rotated and is elevated, the trapezius II and IV contract along with the serratus anterior. The elbow begins extending as it the triceps contract concentrically, driving the barbell upward. The radia-ulna joint remains pronated. The wrist remains flexed, supporting the weight of the barbell. The hand is flexed around the barbell. The ankle is slightly flexed, simply because of
Some common words found in the essay are:
, Conclusion Shoulder, Upper Extremities, II IV, Lower Body, Upward Movement, Downward Movement, starting position, hand flexed, upper extremities, eccentrically contract, upper arm, shoulder girdle, radia-ulna joint remains, trapezius ii iv, weight barbell, shoulder strength, hand flexed barbell, flexed barbell, shoulder abducted, lateral deltoid supraspinatus, abducted shoulder girdle,
Approximate Word count = 804
Approximate Pages = 3 (250 words per page double spaced)
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