3 ms·
I may be reading it incorrectly, but it seems rather strange they are counting the eccentric (decline / negative) portion of the Bicep curl as the only stimulus
by dave7 4y ago
I may be reading it incorrectly, but it seems rather strange they are counting the eccentric (decline / negative) portion of the Bicep curl as the only stimulus. It begs the question, how did the trainees get the weight back up to the top to do the next rep? Lab assistants?
It is also interesting because negatives are super-effective when you are too weak to manage a whole rep, this is often the case with pull-ups and the trainee can easily jump up to the bar, lowering themselves slowly as the stimulus, and soon enough will become strong enough to perform a complete rep. But after that point, the eccentric portion alone will not be enough to improve further.
- brigandish 4y agoMy guess is they use both arms to lift. Perhaps that doesn’t count as enough stimulus to be recorded?
- scajanus 4y agoCouldn't access the original paper easily, but in studies like this they might use specialized lab equipment -- that allows 'maximal voluntary eccentric contraction' more safely and easily than traditional dumbbell/barbell lifts. Basically it would complete the rep in, say, 1 second, while measuring the force you put out, but the machine is powerful enough to resist whatever force you put against it. They probably used the same machine to measure the results, that is, 'MVC-ECC, isometric (MVC-ISO), and concentric contraction (MVC-CON) torque of the elbow flexors' -- which would also be harder to do in a traditional gym setup.