Two electrodes Ag/AgCl with a 20-mm inter-electrode distance (Miotrace[R] 100) were placed midline of the Anterior Deltoid
(AD): 4.0 cm below the clavicle, parallel to the muscle fibers at an oblique angle to the arm, the Pectoralis Major Clavicular fibers (PMC): 2.0 cm below the anterior border of clavicle along the longitudinal axis that crosses the middle point of the clavicle, and the Pectoralis Major Sternocostal head (PMS): 2.0 cm medial from the axillary fold, parallel to the muscle fibers via a marginal oblique angle with a reference electrode placed close to the right clavicle.
[R.sub.muscles] (muscles = PM, AD, MD, PD), the standardized coefficients between the strength at elbow and the activation of muscles (pectoralis major(PM), anterior deltoid
(AD), intermediate deltoid (MD), posterior deltoid (PD)); [R.sub.muscles] (muscles = BB, TB, BR), the standardized coefficients between the strength at shoulder and the activation of muscles (biceps brachii (BB), triceps brachii (TB), brachioraialis (BR)).
The MRI demonstrated avulsion of the pectoralis major tendon from its insertion on the humerus with retraction as well as strain of the anterior deltoid
(Figures 2 and 3).
Eletromyography Acityvit of the Pectoralis Major and Anterior Deltoid
Muscle During Three Upper-Body Lifts.
Therefore the target muscles to which treatment must be directed are the pectoral muscles anteriorly (pectoralis major, pectoralis minor, and the subclavius), and the posterior muscles of thoracic-spinal extension (erector spinae and transversospinalis), shoulder girdle retraction (rhomboids and trapezius, especially middle trapezius), and humeral medial rotation (subscapularis, teres major, latissimus dorsi, anterior deltoid
, and pectoralis major).
(2007) investigated the effects of a PE sequence on upper-body muscle activation during bench press exercise and reported that performing a pec deck exercise immediately prior to a bench press led to similar sEMG amplitude of both the anterior deltoid
and pectoralis major muscles.
The use of 10 mm of bone graft behind the baseplate with the BIO-RSA[R] technique made this device significantly less efficient, resulting in a 29.4% decrease in anterior deltoid
efficiency, 30.2% decrease in middle deltoid efficiency, and a 28.7% decrease in posterior deltoid efficiency.
These muscles are the left anterior deltoid
muscle, the right rear deltoid muscle and the right rhomboid muscle (assuming you are right handed).
The anterior deltoid
EMG signal was collected during shoulder flexion, while the medial and posterior deltoid EMG signals were collected during horizontal shoulder extension.
sEMG signals were detected on seven muscles of the right shoulder after depilation and cleaning with alcohol wipes: anterior deltoid
(AD), middle deltoid (MD), posterior deltoid (PD), pectoralis major (PM), upper trapezius (UT), biceps brachii (BB), and triceps brachii (TB).
sEMG was examined by eight muscles (erector spinae neck, trapezius, supraspinatus, infraspinatus, pectoralis, anterior deltoid
, middle deltoid and latissimus dorsi) involved in scapulohumeral rhythm right shoulder of 16 right-handed subjects of which 8 were males and 8 females.