< strong>The latissimus dorsi origin and function
The latissimus dorsi is the largest and most sculpted muscle on our back. It is located on both sides of our back. A strong latissimus dorsi can make your The back becomes wider, and the figure looks like an inverted triangle when viewed from the back!
The latissimus dorsi is the strongest muscle in the upper limbs. During exercise, a strong latissimus dorsi will make your sports performance better
Today we are going to start with Let us learn about the latissimus dorsi muscle from an anatomical point of view, and understand its shape, location and function. This will better help you understand the latissimus dorsi muscle and train better!
Latissimus Dorsi
Location: Subcutaneous on the lower back
Shape >: Triangular flat (platy) muscle
Origin: Lower 6 thoracic vertebrae and all lumbar spinous processes, median sacral crest, posterior iliac crest and lateral surface of the lower 3 ribs
Insertion point: Lesser tubercle ridge of humerus
Function: Proximal fixation - extension, adduction and internal rotation of the upper arm
Distal fixation—pull the trunk upward to assist in inhalation and perform lateral flexion and rotation of the spine
From an anatomical position, the latissimus dorsi muscle is mainly responsible for shoulder movements, including shoulder extension, shoulder adduction, and shoulder internal rotation
Therefore, our latissimus dorsi can be effectively trained in movements that include these joint movements
For example: pull-ups, high pull-downs, seated rows, dumbbell one-handed rows, straight-arm pull-downs, etc. etc
Among them, vertical pulling movements such as pull-ups and pull-downs have the effect of training the latissimus dorsi muscles. Best, the vertical pulling action allows the latissimus dorsi muscles to have a larger and longer range of motion
Compared with horizontal pulling movements such as seated rowing and barbell dumbbell rowing, the range of motion of the latissimus dorsi is relatively small, so the back The latissimus dorsi training effect will not be as good as the vertical pulling movement
Another point: in the vertical pulling movement, the movement methods of the latissimus dorsi muscles will be different between the narrow grip and the wide grip, with more narrow grips. It is a movement pattern that utilizes the extension of the shoulder joint, while the wide stance utilizes the adduction function of the shoulder joint