What are three actions of the latissimus dorsi?
The latissimus dorsi is the largest muscle in the upper body. The latissimus dorsi is responsible for extension, adduction, transverse extension also known as horizontal abduction (or horizontal extension), flexion from an extended position, and (medial) internal rotation of the shoulder joint.
What happens when the latissimus dorsi contracts concentrically?
The shoulder girdle muscles of the trapezius, serratus anterior and pectoralis minor cause abduction and upward rotation of the scapula. The shoulder joint is pulled down into adduction by the concentric contraction of the latissimus dorsi, teres major, pectoralis major, subscapularis and triceps.
What is the most common exercise for the latissimus dorsi?
Use enough weight or resistance that you can complete the desired number of reps.
- Seated Rows With Resistance Bands.
- Bent Over Row With Bands.
- Power Plank With Rows.
- Dumbbell Rows With Bands.
- Alternating Dumbbell Rows.
- Straight Arm Pulls.
- Barbell Pullovers.
- Compound Row.
What is the action of the pectoralis major muscle?
The pectoralis major extends across the upper part of the chest and is attached to a ridge at the rear of the humerus (the bone of the upper arm). Its major actions are adduction, or depression, of the arm (in opposition to the action of the deltoideus muscle) and rotation of the arm forward about the axis of the body.
How do lats work?
With your trunk stationary, the lats turn your arm in, they bring it closer to the midline of your body and they extend your shoulder joint back (essentially the same as bringing your arm back). They can do these movements separately or in combination with one another.
What movement occurs when the gluteus maximus contracts concentrically?
Gluteus maximus main actions are to extend and laterally rotate the hip joint. Furthermore, upper fibers can abduct the hip whereas the lower fibers can adduct.
What joint action occurs when the gastrocnemius contracts concentrically?
plantar flexion
Calf raise – the concentric phase is when you lift the heels off the floor, lifting the body up against gravity. The joint used is the ankle; the joint action is plantar flexion; the muscles causing plantar flexion are the gastrocnemius and soleus. Hence, the prime movers are the gastrocnemius and soleus.
What exercise is focusing on activating the latissimus dorsi?
Pull Ups / Pull Up Progressions Pull-ups are widely considered to be the king of upper body exercises. The reason the pull up is so effective is it takes the latissimus dorsi through a full range of motion. Starting from an overhead position all the way to full extension.
Do push-ups work latissimus dorsi?
The Importance of Push-Ups During a push-up, you’ll use your latissimus dorsi (Lats), trapezius (traps), and abdominal muscles to stabilize your pushing muscles and your lower back, legs, and glutes to maintain a perfect plank position and keep your hips from sagging.
How does the pectoralis major affect the movement of the shoulder?
When the arm is in the anatomical position, the pectoralis major acts as a strong adductor and internal rotator of the humerus at the shoulder joint. Acting independently, the clavicular portion of the muscle flexes the humerus up to 90 degrees in a horizontal plane.
What’s the best way to strengthen the latissimus dorsi?
Isometrics involve tightening your muscles without moving your joints. Start strengthening your latissimus dorsi muscle by sitting upright in a firm chair, both feet firmly on the floor. Tighten your chest and back muscles. Hold this tension for 10 seconds.
What happens when you tear the latissimus dorsi muscle?
A tear in the latissimus tendon often causes an audible popping sound at the time of injury. With trauma, swelling is immediate and you might have a burning sensation in your armpit. With a full tear, you will also be completely unable to move your arm backward as soon as the injury occurs. With a severe strain, muscle fibers can tear.
Why is latissimus dorsi considered a global Mobiliser?
Latissimus dorsi runs over more than one joint and is therefore classified as a global mobiliser. Global mobilisers may lose extensibility in habitual use or consistent positioning of a joint i.e. poor posture.
Which is the superior border of the latissimus dorsi muscle?
The superior border of latissimus dorsi forms the lower border of the triangle of auscultation. The lateral border of the muscle forms the medial border of the lumbar triangle. a. Spinous processes of 7th thoracic to 5th Lumbar vertebrae. b. Iliac crest of sacrum . c. Thoracolumbar fascia . d. Inferior angle of the scapula . e.
