Deltoid Abduction of the shoulder (moving the arm outwards and away from the body) Outward arm action in a jumping jack Rotator cuffs A group of stabilising muscles of the shoulder which helps to ...

Israetel is an exercise scientist and co-founder of Renaissance Periodization, known for his expertise in muscle growth. He’s ...

Thank shoulder flexion for that ... You should also work to strengthen smaller back muscles, too, says Hanrahan. Muscles like your lower traps and lats help hold your shoulder blade in proper ...

There are various hip flexor muscles that all work to enable a person to move ... quadriceps the sartorius and pectineus contribute hip flexion synergistically Overuse or overstretching of ...