To calculste the actual amount of weight that you are using in a leg press you take the amount of wieght and multiply it by the sin of the angle. 45(sin)800 times the force of gravity 9.8 meters per second times the hight it is moved maybe 1.5 feet convert all of that into feet and there you go or something like that. Squats are superior period. the entire weight is transfered through your entire body because the weight is on the shoulders bringing your entire posterior chanin of muscles involved includin shoulders the entire back, hips,legs , abs ect.witha leg press you only use legs. Its a pretty simple concept if you think about it. Get out of the leg press and start squatting
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