force of a punch
Original Poster: george stiles
Forum: Others
Posted On: 30-10-2004, 19:49
Orginal Post: george stiles: how much force does the average heavyweight boxer hit with?i want to know how many pounds of presure per square inch that there punch can generate. i was looking for answers online and wasn't coming up with much i figured someone here would know or know where i can go to find out. thancks for the help
Post: confusingDot:
how can you even measure that?>
Post: Wilhelm von Wänkensteïn:
[quote=confusingDot how can you even measure that?[/quote It's called a piezoelectric sensor that relates the electrical charge generated by the deformation - directly proportional to the force applied - of a composite material. Measuring the force of a boxer's punch (presumably those of other martial artists also) is old hat.
As for the data you're looking for, George, I'll see if I can dig up some studies if you're interested. PM me to remind me, since I tend to forget rather easily.>
Post: dscott:
Well......according to the Russian in Rocky IV, the average boxer's punch measures 750 psi. Ivan Drago, however, measures 1850 psi. So in other words, whatever he hit's....he destroys.>
Post: confusingDot:
is there any easy way to measure this myself, without that piezoelectricmajiggy?>
Post: Wilhelm von Wänkensteïn:
Well, technically, there is one, but it's a rough measure. Find the approximate breaking point of human bone, compensate with mechanical factors arising from the structure of a fist, then find something harder than human bone (like a granite rock) and smash that fist into said hard object as hard as possible. If the hand breaks, it means the force of your punch > breaking point of human bone. If it doesn't break, F(punch) < breaking point of human bone. If it splinters but doesn't break all the way, the force of the punch is less than the breaking point of bone but tends towards it. If the break isn't complete, then the force of the punch is more than the breaking point of bone, but also tends towards it.
I said it was a rough measure :wink:>
Post: confusingDot:
nice nice :)>
Post: Umy:
I remember someone giving me an exact figure a while back but again i forget what day it is sometimes so i dont think I can tell you the figure :lol:>
Post: Michael M.:
I'm not sure if this is true or not, but here it is:
The average heavyweight boxer punches with 600 pounds of force per square inch. An advanced Karate black belt can punch with a force of 2000 pounds per square inch.
Taken from here: http://www.midwestkarate.org/karate.htm>
Post: Gong||Jau:
Umm... I think we should clarify something: force is measured in pounds, or normally Newtons (in physics). Pressure is measured in pounds per square inch, millimeters of Mercury, etc. Therefore, the contact area makes a huge difference in the final measurement (more so than a small change in the force). Wearing boxing gloves would cause you to hit with a lot less pressure (even if you hit with more force) than not wearing them, since the surface area of a boxing glove is so much greater than the surface area of the one or two knuckles most karateka hit with. I would be extremely surprised to discover that an average shodan could hit with significantly more pressure than an average heavyweight boxer without gloves on.>
Post: confusingDot:
so ivan drago was tested with gloves on?
i've read about some of those crazy karate people... there was that one man who killed the bull with one hit to the head, and he lived int he wilderness hitting trees and rocks, but of ALL the "advanced" black belts, there are probably less then 10% who can do that... WAY LESS.>
Post: Ninja Kl0wn:
Mas Oyama>
Post: Gong||Jau:
[quote=confusingDot so ivan drago was tested with gloves on?
[/quote
Umm... I meant in real life :roll:
I don't think anyone since then has trained with the same intensity as Oyama, and if you look at pictures of him he was gifted with size and strength to begin with, so I highly doubt that anyone could do that now.>
Post: jlambvo:
I think Gong Jau's point about contact surface area is too-often overlooked, since the force will be geometrically multiplied the smaller this area. This means that if you are fighting bareknuckle, it really doesn't take a tremendous amount of power in your punch to have a good effect IF you are trying to targeting specific effects (damage a joint or organ for instance).
There's the old question, would you rather be hit in the head with nail or a brick?
I would theorize that this is an issue for people accustomed to boxing with gloves on (as has been oft-mentioned), because the gloves change the effects of impact (not reduce, but change) so modern boxing has adjusted to a different method of striking that becomes rather dangerous (and in my opinion a bit limiting) when the protection comes off. I am of the opinion that placement, timing, and proper choice of fist are more important than how much pressure your punch generates.
'course, I'm still curious too :)>
Post: bushidoka:
Hung-Ta Chiu
National Taiwan Normal University, Taipei, Taiwan
Tzyy-Yuang Shiang
National College of P. E. & Sports, Taoyuan, Taiwan
The purpose of this study was to determine reaction time, attacking speed and punch force of the well-trained Karateka in various karate punch situations using a quick-feedback approach. Twelve subjects (8 male, 4 female), the ROC National Karate Team for the 1998 Bangkok Asian Games, were asked to perform four punch techniques in this study. The four conditions are stand straight, stand reverse, forward straight and forward reverse punches. The results showed that there were no systematic differences between straight and reverse punches. However, the reaction times in forward punch (550-650 ms) were longer than stand punch (350-450 ms), and the attacking speeds in forward punch (2.7-3.0 m/s) were faster than stand punch (1.9-2.1 m/s). In this study, the punch force was expressed by the impact acceleration of the target. The punch forces of the male subjects (43-54 g) were larger than female subjects (24-39 g) as expected. The results of this test could be used as a quantitative index for coaches to improve the punch techniques of the athletes.
Forget where I got this, trade rag no doubt.
There is a group working on a new method of measuring strike force. I'll see if I can't find something on it.>
Post: confusingDot:
if you can find ways to test all of those on my own... like reaction time, and force, and such and such. i'd sure like to know, cause i'd be interested in testing my own.>
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