Question

When performing a shoulder hand spacing push up versus a closer hand spacing with hands positioned closer to the mid torso, how does this effect activation within the; Pectoralis Major and Minor differ . Also, if using the shoulder hand spacing push up what happens to muscle activation within The Pectoralis Major and Minor when you; elevate your feet, elevate your hands?

Answer 1

Pectoralis minor majorly stabilizes scapula by pulling it inferiorly and anteriorly against the thoracic wall but pectoralis major function to flex and adducts and internally rotate the humerus .while performing shoulder hand spacing push up ,pectoralis major muscle adduct the armtowards the body which help for proper technique of push up.

During closed hand spacing, shoulder is in elevated position, and pectoralis minor acts on shoulder elevating the ribs and moving scapula forward and backward.,Thus helping to stabilize torso.

when someone elevate feet, weight on upper body is increased causing more contraction of pectoral muscles and both muscles work simultaneously to control it.