How do you measure the weight on a leg press?

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    How do you measure the weight on a leg press?


    This may be a dumb question but how do you measure the weight on a leg press? There is the weight from the plates, but there is also the sled, or whatever you call what you push that has the weights attached. I was also wondering if anyone has some type of squats to leg press conversion ratio of some type. For example squatting 225 lbs. equals ? on the leg press. Thanks for any help.

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    Being its on a 45 degree angle, if you measure absolutely vertical, you are only moving the weight 1/2 as far as you are along the axis of movement. Therefore, the force you exert is 1/2. Its a simple principal of mechanical advantage called an inclined plane. As for the sled itself, I've heard estimates of adding 100lbs only.
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    Some sleds have their weight listed, the one at my gym is 45lb. Why aren't you squatting?
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    How do you measure weight on the leg press? By the pound!

    Seriously yeah, there is a label on most machines. mine is 80lbs. There really isn't a direct leg press pounds to squat as the mechanics are still a bit different. I hit 650 on the leg press today tho
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    Quote Originally Posted by glipp View Post
    This may be a dumb question but how do you measure the weight on a leg press? There is the weight from the plates, but there is also the sled, or whatever you call what you push that has the weights attached. I was also wondering if anyone has some type of squats to leg press conversion ratio of some type. For example squatting 225 lbs. equals ? on the leg press. Thanks for any help.
    who gives a sh1t. you keeping adding weight until its heavy. simple.
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    Quote Originally Posted by EasyEJL View Post
    How do you measure weight on the leg press? By the pound!

    Seriously yeah, there is a label on most machines. mine is 80lbs. There really isn't a direct leg press pounds to squat as the mechanics are still a bit different. I hit 650 on the leg press today tho

    Is that a new PR Easy? Congrats bro!
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    basically. I have previously done 600 for 5, but was scared to go much higher I could probably do 630 for 4 or 5, going to try that next time
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    Squats and leg press don't convert well. There are +/- balance issues, +/- angle issues, how low do you go issues... etc. the varibales are too great to have something as linear as a conversion rate between the two.
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    It's all relative really. I've been able to press as much as 15olbs more or less depending on the type of sled alone. It also depends if the sled has an adjustable seat. I can leg press an assload on some of those sleds that have the seat locked in permanently because I'm only 5 ft 7. Now someone who could have way stronger legs could press alot less than me,simply if they are a lot taller because they are likely starting with their knees up agains their chest while my legs are halfway extended already.
    I just don't put a whole lot of stock into any number that someone claims they can leg press. There are just way to many factors involved.
    Squats, however are an even playing field and are a much better gage of leg/core strength.


    I remember seeing a thing on tv about that old dude from the 700 club or whatever its called, leg pressing 1000 pounds or something like that.
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    Quote Originally Posted by Bunting View Post
    I remember seeing a thing on tv about that old dude from the 700 club or whatever its called, leg pressing 1000 pounds or something like that.
    it was 1600 lbs I think, for about 1/2 inch ROM
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    Quote Originally Posted by Australian made View Post
    who gives a sh1t. you keeping adding weight until its heavy. simple.
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    Quote Originally Posted by EasyEJL View Post
    it was 1600 lbs I think, for about 1/2 inch ROM
    I see people squat or bench big weights with 1/2 ROM and I always feel like screaming across the gym, "I'm still waiting for rep number one!"
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    Quote Originally Posted by VolcomX311 View Post
    Squats and leg press don't convert well. There are +/- balance issues, +/- angle issues, how low do you go issues... etc. the varibales are too great to have something as linear as a conversion rate between the two.
    There was an NSCA study that found a pretty accurate formula for converting between LP and either front squat or back squat. I'll see if I can dig it up. Another thing to keep in mind is that lower back strength plays a huge role in squat strength.
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    Quote Originally Posted by VolcomX311 View Post
    I see people squat or bench big weights with 1/2 ROM and I always feel like screaming across the gym, "I'm still waiting for rep number one!"
    theres one guy at my gym that does that and its not really with that much weight on it, I think 8 45lb plates so 440lbs. huffing and panting to do maybe 8-10" of motion.
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    Quote Originally Posted by EasyEJL View Post
    theres one guy at my gym that does that and its not really with that much weight on it, I think 8 45lb plates so 440lbs. huffing and panting to do maybe 8-10" of motion.
    I'm guessing the guys physical appearance is below average.It's like they can't "prove" anything with their lack of muscles(although they do)so they make up for it with "heavy" weight.
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    Quote Originally Posted by Rodja View Post
    There was an NSCA study that found a pretty accurate formula for converting between LP and either front squat or back squat. I'll see if I can dig it up. Another thing to keep in mind is that lower back strength plays a huge role in squat strength.
    That'd be very interesting to see. I would imagine there'd have to be some existing control variables to make that conversion accurate.
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    Quote Originally Posted by EasyEJL View Post
    theres one guy at my gym that does that and its not really with that much weight on it, I think 8 45lb plates so 440lbs. huffing and panting to do maybe 8-10" of motion.
    Did you call 440lbs not that much Easy? My squat max is 405lbs, but my Dead max is 500lbs. Don't know how normal that is....
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    Quote Originally Posted by VolcomX311 View Post
    Did you call 440lbs not that much Easy? My squat max is 405lbs, but my Dead max is 500lbs. Don't know how normal that is....
    the football coach says you can usually do 50lbs more then your squat. I don't think 'forumula' is accurate

    My squat is roughly 335lbs and I can straddle deadlift 475lbs.

    Thats 140lbs..but he also said straddle adds roughly 25lbs to your SLDL max..so then say its only 450lbs. That is still 115lbs.

    I would like to know how to blast my squat some more.
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    Quote Originally Posted by VolcomX311 View Post
    Did you call 440lbs not that much Easy? My squat max is 405lbs, but my Dead max is 500lbs. Don't know how normal that is....
    that was leg presses on the sled not squats or deads, and thats including the sled's weight. that would hurt for even just thighs parallel to the ground squatting.
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    Quote Originally Posted by EasyEJL View Post
    that was leg presses on the sled not squats or deads, and thats including the sled's weight. that would hurt for even just thighs parallel to the ground squatting.
    gotcha
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    Quote Originally Posted by VolcomX311 View Post
    I see people squat or bench big weights with 1/2 ROM and I always feel like screaming across the gym, "I'm still waiting for rep number one!"
    Word, I'm gonna do that next time I see it. "Still waiting for #1 brother!" Start talking like Randy Savage, oh the fun to be had....
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    Not all leg press machines are the same. A lot of gyms just have a Cybex which pivots (easier) ...then there are different manufacturers of sleds that slide on rails (more difficult).

    Try doing leg presses one leg at a time...I guarantee you that you can't just cut the weight you normally do in half...far more intense.

    Now go try to squat on one leg. It can't be done.

    These are two different exercises one of which varies depending on which machine you use. Don't try to equate the two...
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    Quote Originally Posted by SilentBob187 View Post
    Some sleds have their weight listed, the one at my gym is 45lb. Why aren't you squatting?
    Thanks for all the responses. I am squatting. I just wanted to mix in the leg press and wanted to know how to measure how much I was pressing. Now I know to look on the side of the sled and add that to the plates on it. I keep logs of my training so this is important for me to see my progress. Thanks again everyone.
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    Quote Originally Posted by glipp View Post
    Thanks for all the responses. I am squatting. I just wanted to mix in the leg press and wanted to know how to measure how much I was pressing. Now I know to look on the side of the sled and add that to the plates on it. I keep logs of my training so this is important for me to see my progress. Thanks again everyone.
    So how much are you squatting and pressing?

    I've been pressing cause my lower back has been jacked up for a while. I was doing good with presses and felt my back was getting stronger then i jumped right on the leg press after my cardio and tried to do too much starting off...pulled the lower back and its gonna take a while to heal...been out of them gym for almost a week now.

    Last week before i pulled my back, i was doing 420x6 on my 4th set. In high school when i could actually squat, my max was 325, I cant even come close to 250 at this point in my life cause of my back. Also when i press, i got all the way down....the sled actually hits sometimes.
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    you need to make sure your not rounding your lower back when leg pressing, my chirco. told me that he treats a lot of people because of poor form on the leg press ( more so than any other weight training injury, for him atleast )
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    Quote Originally Posted by JDF View Post
    you need to make sure your not rounding your lower back when leg pressing, my chirco. told me that he treats a lot of people because of poor form on the leg press ( more so than any other weight training injury, for him atleast )
    Really? I can see how that happens. I tend to start low and work my way up with 5 or 6 sets. Curling my back on all of them. But getting stretched out from the low weight first.

    I made a stupid mistake with my math on the weight.

    So curling is bad form, hmm?
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    curling your back when leg pressing is similar to arching your back while deadlifting, so says my chiro that actually did some bodybuilding back in the day. he's really into sports medicine so whenever I go see him we end up talking about form and how to set up your workouts.
  

  
 

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