來自 桃園縣
磅數 145.7磅
發文 72
註冊 2004/11/4
量級 輕量級
★★
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Arm position determines muscle use on the bench press
Where your elbows fall at the bottom of the bench press dramatically affects the stress placed on the muscles involved and also the joints.
Story by: Timothy Fritz, CSCS
Question: How far out should my elbows be when I do a barbell bench press?
Answer: Where your elbows fall at the bottom of the bench press dramatically affects the stress placed on the muscles involved and also the joints. Optimal elbow placement depends on your bench-press goals.
MUSCLE MOVERS. The primary muscles involved in the bench press are the pectoralis major, triceps and anterior deltoid (front shoulder). The movements include elbow extension (straightening of your arm), shoulder horizontal adduction (bringing the arm from straight out to your side inward at shoulder level) and shoulder flexion (lifting your arm from down at your side upward).
A change in elbow position during the bench press shifts the shoulder movement from flexion to horizontal adduction and alters utilization of the three primary muscle groups.
ELBOWS OUT. With your elbows straight out to your sides, the movement at the shoulder is primarily horizontal adduction with minimal flexion. Pectoralis major involvement is at its highest, while anterior deltoid use is significantly decreased. Yet the farther your elbows are out to your sides, the greater the stress on the shoulder capsule.
ELBOWS IN. The closer you keep your elbows to your sides, the less pectoralis involvement. Shoulder movement shifts from horizontal adduction to flexion, boosting anterior deltoid stimulation. This also increases the triceps' range of motion and their subsequent involvement.
ELBOWS AT 45 DEGREES. Lowering the bar with the elbows out at 45 degrees from the body allows more strength production because the chest, delts and tri's all play a significant role. It also reduces stress on the shoulder, which is critical when heavy poundage is used.
Tim Fritz, CSCS, is a freelance health and fitness writer in southeastern Florida. Contact him at [email protected]
The Ins & Outs of Pressing
Determine the best bench-press elbow position to meet your goals.
MUSCLE INVOLVEMENT
ELBOW POSITION PECTORALIS MAJOR TRICEPS ANTERIOR DELTOID BOTTOM LINE
Elbows Out (90 Degrees) Major Significant Minimal Best for Pec Growth
Elbows Middle (45 Degrees) Near Maximal Near Maximal Near Maximal Best for Strength
Elbows in (0 Degrees) Minimal Maximal Maximal Best for Triceps Growth
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