I read a Frederic Delavier’s book « Strength Training Anatomy » and there is good stuff.
Sitting with your back straight. Take the barbell with your hand in pronation behind your neck :
Inhale and press the barbell above your head without arching your back
Exhale at the end of the movement
This exercice works deltoids (middle part and posterior part), upper trapezius, triceps and serratus anterior. It works a little rhomboids, infraspinatus, teres minor and supraspinatus.
This movement can do standing or with the machine smith. There is several machine to do this exercice with more security.
Warning : To avoid trauma to shoulders joint, rest the barbell higher or lower behind the neck according individual differences in morphology and flexibility.
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