Nathanael,
You are the man. Thanks for all the back and forth sir.
My confusion was certainly because I didn't have the right idea about the acceleration aspect of the lift. But its definitely apparent that for the sake of calculation, we can just sum the work in one direction. Of course...
I'm not sure of any way to measure the absorption of energy by the body other than in terms of metabolism of carbs/fats or maybe the SAR for radio wave absorption. But, I may have an insight as to why the work performed is different on the way down than on the way up, with respect to the muscle...
Also, it may be useful to consider another lift in this scenario: the squat. Its a bit different than the bench press dynamically but still has a concentric and eccentric aspect. Instead of accelerating the weight upward initially, we are resisting gravity as we lower the weight. But the key...
Great thoughts, Nathaniel. I think rather than trying to sum the different forms of work being done by the muscle, and on them, it is probably more useful to just analyze this in terms of power output. If we consider the work being done by the muscle on the way up, and the work done on the...
Overall, my point of this whole exercise is to find a way to relatively accurately (but not that accurately) assess the work being done by a lifter performing a move like this, but also in a way that incorporates the work it requires to lower a weight in a controlled way using muscular...
Thanks, Nathaniel.
I'll try to elaborate a bit. I'm much more of a biology/biochemistry guy who is only just starting to get into biomechanics out of pure curiosity/interest. And its been a couple of years since I got through the first two semesters of physics. So I'm trying to keep my model as...
Thank you in advance for your help!
Consider a lifter performing a bench press. The weight of the bar is 225 lbs. Assume the duration of the entire movement from the lowest point to the highest is 1 sec., and that the bar will move a total of 2 ft. from the lifter's sternum to the height of his...