Shoulder Anatomy: Infraspinatus

Show Up Fitness – Where Great Trainers Are Made

Muscle of the Day: Infraspinatus (second muscle of the Rotator Cuff muscles SITS.) Inferior = below.

The infraspinatus is one of the 4 muscles comprising the rotator cuff (SITS). Learn all this and much more at Show Up Fitness.

Origin: Infraspinous Fossa

Insertion: Greater Tuberosity of the Humerus

Action: (1) Stabilize the head of the humerus into the glenoid cavity, (2) External Rotation, Horizontal abduction, Extension. (stabilization of the glenohumeral joint is the primary role of each rotator cuff muscle).

The (P)reHab Guys have a great video library to help with common injuries to the rotator cuff muscle infraspinatus and much more. Read more about that here.

BECOME A TRAINER AT SHOW UP FITNESS, ENROLL ONLINE TODAY!!!

If you want to become a personal trainer, Show Up Fitness has the nation's best personal training internship program that you can complete within 2-months. Our classes are for certified personal trainers and aspiring trainers who need to gain experience, learn in-depth anatomy, nutrition, basic sales, how to grow your social media following, and programming. Over 80% of trainers get certified (usually by NASM, ACE, or ISSA), invest too much money and then quit within 12-months because they have no idea how to train or maintain their business. Now that we are online, you can take classes at showupfitness.com and learn for 1-2 months and then SHOW UP for the internship in San Diego or Los Angeles. We have 12-month payment plans for as little as $200/month.

If you want to become a personal trainer, Show Up Fitness Personal Training Internship under the Patreon.com platform is for you! You can pass NASM, or if you're already certified, you can take your knowledge to the next level!

Your Cart