The extension of the lower arm is a result of the contraction of the triceps muscle, which is located on the back of the upper arm. When the triceps contracts, it straightens the arm by extending the elbow joint.
Agonist - Pectoralis Major, Triceps Brachii Antagonist - Bicep Brachii, Latissimus Dorsi
Triceps brachii, aided by anconeus
triceps brachii
There are five muscles worked when doing a triceps extension. The main muscle is, obviously, the triceps. Secondary muscles that are worked are the deltoid, pectorals major, latissimus dorsi, and teres major.
The triceps muscle is the primary muscle used in a cable extension.
When the biceps contracts the triceps relaxes slowly. It happens when your arm is bent.
Shoulder extension is controlled by: Long head of the triceps, the last, and the teres major
extensorThe triceps brachii is an extensor. It is the large muscle on the back of the arm and is primarily the muscle used for extension of the elbow joint or straightening of the arm. The triceps is also an antagonist of the biceps and the brachialis muscles.ExtensorsTriceps is not a flexor. It is extensor of the elbow joint.
The triceps work together with the biceps. They form an antagonistic pair, which means that when one contracts the other relaxes, in order to move your bones. When the biceps are contracting, the triceps are relaxed, and stretches back to its original position. The opposite happens when the triceps contract.
Flexion
To properly perform a supinated tricep extension, start by holding a dumbbell with an underhand grip. Keep your elbows close to your head and extend your arms fully, focusing on contracting your triceps. Lower the weight back down slowly and repeat for desired reps. This exercise targets and strengthens the triceps effectively.