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Pull-ups and triceps.
Cycling and abdominals.
Close grip presses.
Pull over.
Aching.
Speed and bodybuilding.
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PRECONCEIVED IDEAS.
Pull-ups and Triceps.
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I found in the forum an explanation according to which chin-ups (hands in supination) worked the biceps, whereas pull-ups with the hands in pronation and wide grip worked the triceps. |
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With pull-ups and chin-ups, simply look at an anatomic plate to see which muscles come into action:
- Finger flexor muscles.
- Flexors of the forearm on the arm.
- Adductors of the arm on the chest.
- Scapular fixators.
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Irrespective of the hand position, pronation, supination or wide grip, the rule is always the same, it is simply a question of mechanics.
We operate on the same principle as the arm of a mechanical shovel with a bucket!
Yes, but when I do pull-ups,
I can feel underneath the arm, towards the upper part,
it is clearly the triceps!
I'm afraid not.
Looking more closely at the anatomic plates and the insertion points of the muscles concerned in the upper part of the humerus, .
We find that 3 muscles, going under the long triceps, are involved in the adduction movement of the arm over the chest:
- Teres minor,
- Teres major,
- Lattissimus dorsi.
Looking even more closely, the insertion points of the teres major and the lattissimus dorsi are located on the anterior part of the humerus.
These are the main ones concerned in the arm adduction movement.
Since the triceps are arm extensor muscles, they only play an antagonistic role in this exercise. They are the ones which manage the speed and intensity of the movement.
The burning feeling is due solely to the teres minor and the lattissimus dorsi.
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It is therefore very important to consider the muscle attachment points on the bone system to understand their role in a movement. |
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