1 Income statement - This statement measures how well a company is performing financially during a specific time period. 2  Statement of retained earnings - This statement shows the effect of any profit or loss on the retained earnings of a company for a specific time period.
Chin-ups, like most pull-ups, target the latissimus dorsi muscle of the back as a shoulder extensor, scapular downward rotator and scapular depressor, in bringing the spine to the humerus. This is assisted by elbow flexors (brachialis, brachioradialis, biceps brachii) which bring the humerus to the forearm.
Use ladders before you perform weighted pull-ups. The back muscles are primarily composed of type 1 muscle fibers and are geared toward endurance. They keep your posture in check all day, after all. Training them for pure strength with low-rep, heavy loads isn't the best way to stimulate their growth.