seated Dumbbell Triceps Extensions anatomy arm

I read a Frederic Delavier’s book « Strength Training Anatomy » and there is good stuff.

Sitting and you take the dumbbell with your two hands behind your neck :

  • Inhale and make an extension with your arms

  • Exhale at the end of the movement

seated Dumbbell Triceps Extensions anatomy arm

The vertical position of the arm stretches the long head of the triceps to have a good contraction during work.

Note : The three head’s fiber of triceps muscles fit into a tendinous plate which is attached by a tendon to the olecranon. When triceps squeeze, the tendinous plate into the head’s fibers like a wooden plate sinking into butter. Squeezed muscle protrudes from the tendon plate creating this « horseshoe » form.

-Steph

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Seated Dumbbell Triceps Extensions
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