Hi, I currently weigh 84kg and out of interest I performed a push up on a set of bathroom scales with my hands on the floor and my feet on the ground at full stretch.
The weight I was exerting down on the scales was 60kg in a normal pushup. It was about 64kg if I raised my feet slightly on an object.
It dose'nt feel like I'm lifting 60kg when I do pushups. Is there a loss somewhere in the system.
Have I gained a mechanical advantage somewhere with my feet being a pivot point/leverage etc ?
I figure the higher my feet go the truer the amount of weight I am pushing. Maybe an engineer can help.
Thread: How much weight in a pushup ?
08-03-2010, 09:59 PM #1
How much weight in a pushup ?
08-03-2010, 10:07 PM #2
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Not really an expert but i think it seems easier beacuse its a very natural movment. just my guess. plus your using you entire upperbody either to directly move yourself or to stabalize yourself."The harder you work, the harder it is to surrender!"
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08-03-2010, 10:13 PM #3
08-03-2010, 11:02 PM #4
i think the only way to find out would be through trial and error. For example, find a weight that you can do 5 reps on say the bench press with, and then add weight to a push up until you get to the point where you can only do 5 reps at the same time in a workout that you performed the bench press with. Take the weight you benched and subtract the weight you added to the push up = the weight pressed during the push up.
Of course this is not really accurate because although they are somewhat similar exercises they activate very different neural muscular pathways. It would be a good estimate of difficulty though
08-03-2010, 11:06 PM #5
08-03-2010, 11:43 PM #6
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08-04-2010, 01:13 AM #7
08-04-2010, 01:44 AM #8
Studies have been conducted in which push-ups were performed on force plates. They indicated the following:
1. Women performing traditional push-ups lift the equivalent of 71% of their body weight. For example, a 120 pound woman lifts about 85 pounds.
2. Men performing traditional push-ups lift the equivalent of 77% of their body weight. Thus, a 150 pound man lifts about 115 pounds.
3. Modified push-ups, performed with the knees on the ground rather than the feet, reduce the amount of weight lifted. Women lift the equivalent of 55% of their body weight, while men left about 56%. So a 120 pound woman lifts about 66 pounds and a 150 pound man lifts about 84 pounds.
08-04-2010, 08:21 AM #9
08-04-2010, 10:42 AM #10
08-04-2010, 10:49 AM #11
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Push-ups are a closed chain movement, so maybe that added stability lets you push more weight than an open-chain movement like a barbell press or an even more unstable one like a dumbbell press.
Women performing traditional push-ups lift the equivalent of 71% of their body weight.
2. Men performing traditional push-ups lift the equivalent of 77% of their body weight.
3. Modified push-ups, performed with the knees on the ground rather than the feet, reduce the amount of weight lifted. Women lift the equivalent of 55% of their body weight, while men left about 56%
That and, I think men tend to do more upper body training whereas many women avoid it due to fear of being bulky.
There's probably some variation too like naturally large-breasted women being of the higher % and your asianish deliciously flat-chested pettanko surfboards having a lower % of their weight in a pushup meaning they should add some weight sooner I guess.
Of course, whatever the percentage is, the differences shrink the more inclined you get as they approach 100% weight on hands in a handstand pushup.
I suppose the reverse could be said to, the more declined you get (hands higher feet lower) the greater the percentage differences are going to be.
Last edited by Tyciol; 08-04-2010 at 11:01 AM.
08-04-2010, 11:15 AM #12
08-04-2010, 11:54 AM #13
Weight is just the pull of gravity on an object, so when you take other factors into play it can make a weight seem heavier or lighter than it is.
For example, try lifting a 100lb drag dummy that police/firefighters use. It FEELS alot heavier than lifting a 100 lb barbell.
Even lifting 100 lbs on an olympic bar that has rotating sleeves seems easier than a plain barbell even with equal weight.
I remember one guy in the police academy with me, I have NEVER seen someone mess up a push up like this. It is hard to describe, but he basically kept his legs straight and still, and only bent at the waist to do the push up. It was so weird looking it is hard to describe. It just looked wrong though. But, he could do alot of them and couldn't lift for **** in the weight room.
06-23-2013, 06:07 AM #14
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Just did a press up and held myself above the ground, 1 hand of each of my scales.
Digital one said 101.2 lbs. (On my right arm)
Ill have a rest (just did some kettle bells) and see what my mechanical scale says
Also, I weigh 284 lbs, but most I ever bench pressed was 90 Kg (200 lbs) years ago. No way I could bench 220 lbs now(77% of my weight)
* I can do 1 set of 6 press ups at 284 lbs of body weight, normal press up. I guess it isn't an exact science (or is it?) but there is is some data from me anyway!
Yup, mechanical gives the same reading.
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