Bmi Vs. Forearm Size

[Guest Bonzi]

After reading Richard Sorin's results about Tex Henderson's attempt at

the #4 and his forearms measuring 18 1/8" straight, how do

your forearms measure compared to BMI?

You can measure your BMI at CDC's website:

http://www.cdc.gov/nccdphp/dnpa/bmi/

Mine measure 11.5" pulled tight(straight). This is pitiful since I thought

I had at least normal forearms. BTW, my BMI is 24.9. I know

that many variables could skew the BMI readings, but it

seems to give at least a starting point.

For another checkpoint, list your hardest gripper closed. We can see if

there is a correlation. I am about an 1/8" from closing the #2.

Edited July 27, 2007 by Bonzi

[pdfk20]

My forearms are 13.5" my BMI is 26.1

Hardest gripper closed: MM2 replica, im a 1/16" away from closing the RB330N.

[The Mac]

After reading Richard Sorin's results about Tex Henderson's attempt at

the #4 and his forearms measuring 18 1/8" straight,

Sorin posted 17 1/8" straight for Henderson.

[Cannon]

What does "straight" mean? How are you guys measuring forearms?

[Guest Bonzi]

What does "straight" mean? How are you guys measuring forearms?

I assume that the measurement for Tex meant that he did not bend his wrist.

Fist straight out.

[matthcarl]

Well I can at least top you skinny guys in BMI...I'm at 32.9 with 14" forearms. I don't have a lot of experience on the grippers, though. I have some HG 200's I can come within a hair of closing and a 300 that I can get parallel, but no better.

[Cannon]

I guess my forearms are small? 12", 23.7 BMI (according to that thing). I have closed a #3 and missed many others

[Fissure]

BMI 29.2

15 1/2" forearm

mms close #3

ns close HG300

[amaury]

12.5", BMI=23.1

Oh and Ronnie Coleman is obese according to the calculator

[vikingsrule92]

BMI: 22.3

Forearm size: 11 1/4"

Hardest gripper closed: #2

[twig]

Well I can at least top you skinny guys in BMI...I'm at 32.9

Looks like I'm the leader in the clubhouse, with BMI 42. Unpumped forearms, with arm straight from the shoulder is 14.5". I can get 1/2" from my hard (equated to a MM2) #3, and I never met a 300 I couldn't close.

BTW, at 15% bodyfat, my BMI is still 35!

Edited July 28, 2007 by twig

[Autolupus]

BMI 31.9, forearms 13", hardest grippers 1mm from closing my#3, TNS#2.5 both hands.

[Koura]

Forearms: 12.5"

Bmi: 21.8

Hardest gripper closed: 2.5#

[GatorGrip]

Well No Surprise here but I am OBESE

Forearms (cold and straight like an icicle): 13.5" -- (damn that was embarrasing--tiny)

BMI: 36.8

Hardest Gripper Closed: RB 300

In the Army I always had to be taped (neck, midsection) because I exceeded the height to weight ratio for age group. Even though my best PT test was 101 (strict) pushups in 2 minutes, 82 or 84 situps in 2 minutes and 12:49 in the 2 Mile Run

,hey my body structure was built for short bursts of power like sprints (I was pretty fast) but long distance running 7-10 miles at zero dark thirty in the moring was never my favorite thing to do.

[Cunny]

BMI 25.7

Forearm 12.5

Gripper #2

[CoC#3]

BMI: 38

Forearms: 16''

Best gripper close: 3-4mm off a #4.

Edited July 29, 2007 by CoC#3

[Guest Bonzi]

Using the responses I came up with a BMI to Forearm size ratio:

Koura(1.744)

amaury (1.848)

Fissure(1.884)

Pete1006(1.933)

Cannon(1.975)

vikingsrule92(1.982)

Cunny(2.056)

Bonzi(2.165)

The Writer(2.350)

CoC#3(2.375)

Autolupus(2.454)

GatorGrip(2.726)

twig(2.897)

[Koura]

Interesting

[Autolupus]

Try working the gripper closes into your stats!

[Guest Bonzi]

Try working the gripper closes into your stats!

I intended to do just that if the actual grip could be standardized(i.e. TNS, NS, etc).

I think that you will see, as the population of data increases, that the higher

the BMI-Forearm ratio, the higher the efficiency in closing power per energy

storage unit(i.e. calories expended).

[Cunny]

My mistake 11.5 forearm here

[rolf]

Forearm 13"

BMI 32.0

[Ratio 2.462]

Gripper HG300

[Scott Styles]

BMI = Weight (W) / Height (H) ^2 =W/H^2

BMI / Forearm Circumeference (FC) = BMI / FC = W / (H^2 * FC)

We can ignore the impact of height in the calculation, since variance in BMI for a given individual is what we are interested, and the height for a person is more or less constant.

So we are really looking at weight / forearm circumference. I'm not really sure what you expect to come out of that number. Since doubling your weight won't double your forearm size, the heavier someone gets, the bigger the ratio will be.

I suppose someone with the smallest ratio is possibly strong per lb bodyweight, but that's essentially saying that for a given weight and height, the person with the largest forearms is the strongest, which isn't really true.

[rolf]

So we are really looking at weight / forearm circumference. I'm not really sure what you expect to come out of that number. Since doubling your weight won't double your forearm size, the heavier someone gets, the bigger the ratio will be.

I agree with this. BMI-to-forearm ratio will follow the law of diminishing returns, just as size-to-strength ratio. What you could derive had you enough data is the function for this ratio. That would require something like the whole membership of GripBoard, and even then we would only get the function for men who have an unhealthy interest in grip training, not the general population or even lifters in general.

Bottom line, scientifically this is pretty much useless but a bit fun.

[supersqueeze]

Another interesting correlation is that between upper arm and forearm measurements. I think that it is impossible to achieve a ratio below 1 (UA/FA). I also think that the fastest way to bigger forearms is to get bigger upper arms.