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Posted On:
5/25/2011 8:39pm
Style: Weightlifting--
Cheers guys, I feel fairly strong over here, I consider myself pretty weak usually, but thats bound to happen when people you train with guys who squat and pull 800lbs+ and one has benched 500lbs in a meet before.
Guy I work with has also squatted 200kg (460lbs???) x 20
Don't post here much seem so i dont really do any Martial Arts any more, this thread obviously caught my eye though.
Lifting weights is actually the reason I stopped doing martial arts, i started strength training to aid my MMA game and realised I enjoyed lifting weights more than been punched in the face -
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Posted On:
5/25/2011 9:09pm--
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Posted On:
5/25/2011 9:21pm--
A couple of important factors regarding leg press. First, you have to seriously consider the angle of the press machine. Most are a 30° angle, and the bulk of the rest are at 45° angle. When you're pressing at an angle like that, you're not actually lifting the bulk of that weight. Think of a right triangle from geometry class. The path of the machine travels along the hypoteneuse. But gravity only pulls in one direction: straight down. Thus, you're only resisted by the equivalent of one of the legs of said triangle. To compute the percentage of weight that you're actually using, take the Sin of the press angle (in degrees, not radians). Thus, a 30° angle means you'll only actually be working against 50% of the weight on the machine. A 45° angle is somewhat better, at 70.7, ~ 71% of the weight on the machine.
Thus, putting 540 lbs. on the leg press is equivalent (if we assume the ROM is precisely the same) to a squat with 270 lbs on a 30° machine, and 381 lbs on a 45° machine.
But also keep in mind that leg presses only load the legs, whereas squats create demand on the legs, hips, spine, torso, and shoulders (everything between the bar and your feet has to be strong enough to not be bowed by the weight on the bar). Also, with a leg press you have that nice back rest which allows you to more effectively press into the leg press machine (every action has an equal and opposite reaction, so generally half your strength goes into you pushing yourself away from the weight; with the back rest, this is neutralized). Finally, squats require you to maintain a center of gravity and coordinate multiple joint movements and stabilizations into a fluid motion. Therefore, squats create much greater neural activation, which is what triggers muscle fibers to contract. For all of these reasons, leg presses cannot replace squats. I do leg presses when my back hurts, or for specific training phases and objectives. But I never use them to measure strength. It's kinda like a BJJ black belt rolling with a white belt. Sure, the black belt might get a submission, but it doesn't mean much about his ability.
To put it in perspective, I can put 11 plates on each side of the leg press, for a total of 990 lbs. and do full range reps for sets of 6-8. But I'd have to be having the best day of my life to squat 400 for 1.
Usually, the harder version of the exercise is harder because it places a greater set of demands on the body. Greater demand means greater stimulus which means greater gains. Unless you're hindered by injury or thorough ignorance of performance technique, the difficult choice is usually the better choice.Last edited by TaeBo_Master; 5/25/2011 9:25pm at .
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Posted On:
5/25/2011 10:40pm
Style: MMA, BJJ, Boxing--
weight: 155
height: 5ft 9in
I have recently begun a serious lifting program again (strong lifts) about a year and a half ago during my senior year in high school my maxes were as follows:
squat: 360 below parallel
bench: 225
Powerclean: 220
never maxed deadlifts.
I definitely can't lift quite this heavy right now but I'm sure I will get back to this strength if I continue strong lifts



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Posted On:
5/17/2011 1:06pm
Style: Judo noob, BJJ uber noob