Optimal positioning for MRI of the distal biceps brachii
tendon: flexed abducted supinated view.
Surface EMG signals from the biceps brachii
(BB), deltoid anterior (DA), pectoralis major (PM) and triceps brachii (TB) on the right side of the body were collected.
11] provided evidence that there may be selective activation of fast-twitch motor units for the biceps brachii
during eccentric, when compared to concentric muscle actions, which provides further support for the contention that the two contractions use different motor control strategies.
Abbreviations: AD = anterior deltoid, BB = biceps brachii
, EMG = electromyography, MD = middle deltoid, ME = mechanical effectiveness, MVC = maximum voluntary isometric contraction, PC = principal component, PCA = principal component analysis, PD = posterior deltoid, PM = pectoralis major, SCI = spinal cord injury, sEMG = surface electromyography, TB = triceps brachii, UT = upper trapezius.
The muscles they assessed were levator scapulae, supraspinatus and infraspinatus, subscapularis, pectoralis major and biceps brachii
Repeatability of surface EMG variables during voluntary isometric contractions of the biceps brachii
Important Nerves for Upper Brachial Plexus Injury and Reconstruction Nerve Major muscles innervated Musculocutaneous Biceps brachii
, brachialis mm.
This will engage both shoulder and upper arm musculature--primarily the biceps brachii
and brachialis region, which is more important than many would think in maintaining shoulder health.
Reattachment of the biceps brachii
has been proposed, but this technique resulted in strength deficits with supination of the forearm (5).
A case is presented in which, during a 2-year period, both lower biceps brachii
became exquisitely painful, with both the pain and the "frozen shoulders" responding promptly to the initiation of L-dopa therapy.
There are thirty-two segments devoted to a particular muscle, such as temporalis, masseter, sternocleidomastoid, biceps brachii
and so on.
The biceps brachii
, the more visible muscle, gives your arms shape and has two heads, one long and one short.
The biceps brachii
muscle is composed of two heads: the long head originates from the apex of the glenoid, and the short head originates from the tip of the coracoid process.
For instance, during concentric elbow flexion, the biceps brachii
contracts concentrically, whereas the antagonist muscle, the triceps brachii, contracts mildly eccentrically--to allow movement precision.
These reductions in strength were accompanied by respective 19% and 23% decreases in normalized EMG amplitude for the biceps brachii
after the concentric and eccentric exercise.