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« on: April 20, 2016, 04:41:06 pm »
Absolutely. For the standing vertical jump, things are easier, meaning, the 300 lbs guy might have an easier time being at the same level as the 150 lbs guy. More about voluntary power than anything else. Maybe the speed of the movement/reversal of the jump would differ due to the added momentum of the extra weight, but even then, mathematically, they should pretty much be the same. I don't see why they would be different. Maybe all the extra things we've talked about above would still apply (there's still some G-forces occuring during the reversal) but the percentage that these factors are important are far less in the case of the standing vertical jump.
Also, and this might be interesting, maybe there's a certain threshold of "mass" certain muscles have.
Maybe if you take one guy at 150 lbs that squats 300 lbs, and get him to be 300 lbs and squat 600 lbs, his muscular distribution changes and his mechanics change. Maybe when he was 150 lbs and squatted 300, his quads weighed 30 lbs and his glutes weighed 50 lbs. Now, at 300 lbs, his quads weigh 80 lbs and his glutes weigh 100 lbs. Or it might be that his quads weigh 50 lbs and his glutes weigh 150 lbs. Who knows, right? They grew differently, and promote different mechanics. They have different strength ratios now, because the shape, the amount of muscle fibers, motor neurons etc in each muscle is different and has a different potential for growth.
So it's not that easy. But assuming everything is equal, which is not, in real life, then I don't see any mathematical undertaking that would make the 150/300 guy not jump exactly as high as the 300/600 guy.