Training different muscles every day is very important. You most certainly can overdo your training if you do not allow the muscles to rest. Muscles grow when they rest and recuperate. The shoulder must be flexible for the wide range of motion required in the arms and hands, and also strong enough to allow for actions such as lifting, pushing and pulling. Because the shoulder is more flexible, and has a 360 degree movement, it is prone to injury. It is so important to warm up the shoulders before you start your workout session. I think that you would be better off using a less restrictive movement like Dumbbells.
Major muscles Taken from Wikipedia
The muscles that are responsible for movement in the shoulder attach to the scapula, humerus, and clavicle. The muscles that surround the shoulder form the shoulder cap and underarm. Serratus anterior; subclavius; pectoralis minor; sternocleidomastoid; levator scapulae; rhomboid major and rhomboid minor (work together)
Trapezius; Arises from the occipital bone, the ligamentum nuchae, the spinous process of the seventh cervical, and the spinous processes of all the thoracic vertebrae, and from the corresponding portion of the supraspinal ligament. It inserts on the lateral clavicle, the acromion process, and into the spine of the scapula. Different portions of the fibers perform different actions on the scapula: depression, upward rotation, elevation, and adductions.
Deltoid, anterior fibers; Arises from the anterior border and upper surface of the lateral third of the clavicle. The anterior fibres are involved in shoulder abduction when the shoulder is externally rotated. The anterior deltoid is weak in strict transverse flexion but assists the pectoralis major during shoulder transverse flexion / shoulder flexion (elbow slightly inferior to shoulders).
Deltoid, middle fibers; Arises from the lateral margin and upper surface of the acromion. The middle fibres are involved in shoulder abduction when the shoulder is internally rotated, are involved in shoulder flexion when the shoulder is internally rotated, and are involved in shoulder transverse abduction (shoulder externally rotated) -- but are not utilized significantly during strict transverse extension (shoulder internally rotated).
Deltoid, posterior fibers; Arises from the lower lip of the posterior border of the spine of the scapula, as far back as the triangular surface at its medial end. The posterior fibres are strongly involved in transverse extension particularly since the latissimus dorsi muscle is very weak in strict transverse extension. The posterior deltoid is also the primary shoulder hyperextensor.
So many muscles ! This is quite scary because we normally only think the shoulder is composed of the deltoids and Trapezius (Traps). It is for this reason we must do a proper warm up, and then train them with care.
I did shoulder press and then Lat pull-downs both wide and narrow grip. Lats that are tight can cause a good deal of back and shoulder pain because they are attached to both these areas. A regular and good workout will strengthen the muscles and help them to relax when you are not in training.
I worked my abs slowly and as I lowered my legs in the leg-raises I tried to stretch out my legs. I also tried contracting the abs with every rep. I must admit I got a far better burn than normal. It might be that I am trying to show-off - because you can actually see them a bit.
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