Please tell me what muscle control is needed for the shoulders and upper arms to straighten my arms

1.This part is a decrease in muscle strength after normal deltoid muscle atrophy.

2.Because the deltoid muscles are not strong enough, with the help of the strength of the coparty muscles (the muscles on both sides of the neck), the arms are not straight because the triceps muscles are not strong enough, and the triceps muscles are mainly responsible for the action of pushing, including straightening the arms.

3.Or the strength of the deltoid muscles and some small muscles that coordinate movements!

I'm a woman, and I don't want to train my muscles very well, I just need to regain my function. Oh, don't worry, the system of men and women is very different, and it is difficult for women to train their muscles

The rotation of the arm is mainly the cross rotation of the two long bones of the forearm, don't worry, this will come back naturally!

Functional recovery is simple:

At the beginning, you can do the side raise with your bare hands, the front raise, and you can bear the weight after feeling that you don't want to do it as hard as before, and you can use the mineral spring level filled with water instead of dumbbells to do the side raise, and the front raise. There is also a less common action that we usually have, called: Leaning over and raising sideways, as the name suggests:

Lean over, keep your waist straight, your upper body and the ground as parallel as possible, your arms naturally hang down and look up ahead, and use the power of the deltoid muscles to level your arms from both sides!

Good luck with you

1. The arms need to be extended upwards to use the muscles that rotate the scapula and flex the upper arm at the shoulder joint (that is, lift it forward and upward), including the trapezius muscle and the lower part of the serratus anterior muscle (to rotate the scapula superior), the anterior deltoid fascicle, pectoralis major muscle, the coracobrachialis muscle and the long head of the biceps brachii (to flex the upper arm).

2. The right hand needs to be extended backward to use the muscles that rotate the scapula and extend the upper arm (that is, lift it backwards and upwards), including the rhomboidis muscle and the pectoralis minor muscle, levator scapulae muscle (to rotate the scapula), the deltoid posterior bundle, latissimus dorsi, teres major, teres minor, infraspinatus muscle and triceps brachii long head (to extend the upper arm).

3. "At most, you can only rotate to the back of the hand forward, but not to the palm up......".I don't understand this, straight arm rotation or curved arm rotation? Rotate to the palm of the hand upwards should be externally rotated, right? Please tell me whether it is a straight or curved arm, the angle of the arm to the ground, and whether the direction of rotation is counterclockwise or clockwise, so that I can understand.

Judging from your description, you don't need much muscle strength to complete these actions at all, the main problem is that the range of motion of the joints is not enough, it is estimated that the joint ligaments are damaged, or it may be that the stretch and elasticity of the muscles around the joints are poor, and you should do more stretching training, and you don't have to do weight-bearing strength training. I don't know how you got hurt, how did you get hurt?

The extension of both arms requires the synergy of the deltoid muscle as the main and the trapezius muscle as the secondary, and the difficulty of this movement indicates that these two muscles are relatively weak. Forearm rotation requires the action of the pronator teres muscle of the forearm, as for whether it is because of the muscle or the nerve, I personally think that the nerve problem should not be big, but it is recommended to go to a professional medical institution for examination and consultation to determine the specific problem.

As for the recovery exercise of muscles, it is also recommended that you go to a professional diagnosis and treatment center for recovery exercises under the guidance of a professional doctor, after all, this belongs to the medical category, not just a situation that can be fully controlled by a fitness coach, I wish you a good day!

You don't even know what the action is, and others can guess it?

The main target of parallel bars arm flexion and extension is the lower edge of the pectoralis major muscle, and the assisting muscle is the triceps.

Bend your knees with your legs crossed and cross your feet forward.

Keep your head up and your chest up, your eyes looking ahead.

The control muscles are mainly carried out by the contraction of the pectoralis major muscles, and the elbows should be turned to both sides, and remember not to adduct.

Pay attention to the combination of breathing, and exhale when exerting force.

When doing movements, fall slowly and get up quickly.