What is shoulder horizontal abduction?
Reach forward to place your hands directly in front of you at shoulder height. Keep your palms down. Reach out to the sides of your body with both hands at the same time. Hold for a count of three to five seconds and repeat 10 times. Increase by three repetitions each week until you can easily do 20 repetitions.
What muscle does shoulder abduction?
Muscles: supraspinatus (initiates abduction – first 15 degrees), deltoid (up to 90 degrees), trapezius and serratus anterior (scapular rotation, for abduction beyond 90 degrees). The deltoid muscle abducts the arm, but at 90 degrees the humerus bumps into the acromion.
What does horizontal abduction mean?
Horizonal abduction is the movement of the arms from horizontally across the body. Starting from a position where the arms are straight to the front (shoulders flexed at 90 degrees), moving in the transverse plane to end in a position where the arms are straight out to the side (flexed at 90 degrees). Advertisement.
What is horizontal shoulder flexion?
Horizontal flexion: this only happens at the shoulder joint and occurs in the transverse plane. When an arm is held out to the side parallel to the floor and then pulled across the chest, that would be horizontal flexion.
What muscle is the main adductor of the shoulder?
The latissimus dorsi muscle at the level of the shoulder is the most important internal rotator, as it is the most important for the adduction and flexion of the shoulder. It’s a fusiform muscle. The pectoralis major muscle helps flexion, internal rotation, and adduction on a horizontal plane.
What is horizontal flexion of the shoulder?
What does horizontal adduction mean?
horizontal adduction (horizontal flexion) Movement of the arm or thigh in the transverse plane from a lateral position to an anterior position. …
What muscle causes horizontal flexion at the shoulder?
pectoralis major
The pectoralis major has the largest horizontal flexion moment arm with the humerus elevated 90 degrees, whereas the posterior deltoid and infraspinatus have the largest horizontal extension moment arms in this plane.
https://www.youtube.com/watch?v=20zFU9T_fRE