Estimating Bodyfat


It's that time of year again. Before setting my health and fitness goals for 2006, I decided to check the status of a few things first. One of these is my current level of bodyfat - last estimated back in April this year.

Once again I used the same technique as used by the US Department of Defense, the formula being :

% body fat = 86.010 x log10(abdomen - neck) - 70.041 x log10(height) + 36.76

Note that the formula is a little different for females :

% body fat = 163.205 x log10(waist + hip - neck) - 97.684 x log10(height) - 78.387


You Might Also Like...


Brilliant device. If your shoulders aren't quite as flexible as you'd like, grab The Rotater. Love it.

NB : For a complete list of everything we use and recommend, swing by the reviews area. And of course the Straight to the Bar Store. It's all in there.

Plugging in measurements for abdomen, neck and height gave me :

%bf = 86.010 x log10 (35-16)-70.041 x log10(72) + 36.76 = 16.65617 (slightly better than last time).

For demonstration videos showing how the measurements should be taken, have a look at the Physical Readiness section of the NPC site.


Scott Andrew Bird

Scott Andrew Bird is a writer, photographer and a guy who just loves this stuff. He's been at home in front of a computer for more years than he cares to remember (OK, 33) and is now making amends for years of many mistakes noted in the De-constructing computer guy articles (part 2) on T-Nation.

Stalkers may wish to track his every move via Twitter, Google+ or Facebook; everyone else is cordially invited to hop over to his online home. Enjoy.



Like this? Check out :

Is Your Body Actually Responding to your Exercises?

How do you know if your workouts are working or not?


How Many Calories Do I Need? In looking a bit more carefully at my diet for next year, I realised I need to work out my current energy expenditure before trying to gain a few kilos. Working out how many calories you're currently burning up (and consequently how many you need to eat, just to maintain your weight) is a fairly straightforward process, beginning with your Resting Metabolic Rate (RMR).
It's All About the Diet Last night I finally got around to watching Super Size Me, in which Morgan Spurlock eats nothing but McDonalds' food for 30 days. In addition he performed no exercise during the period, and restricted walking to the pathetically low average of less than 5000 steps per day. Whilst I wasn't at all surprised to see a few health problems appear over the month; I was quite amazed at their severity. In fact, it took over a year for him to regain his former weight - let alone his former health. Very interesting documentary. The news this morning was filled with stories linking diet not simply to physical health problems, but also several mental health issues. It's clear that a lot more research needs to be done. As for my own diet experimentation, this morning was the first fortnightly record of a few basic measurements. The primary goal is weight gain, however I'll also be tracking a few of the other regulars.


Of course, if you enjoyed these, I'd highly recommend grabbing the Strength & Fitness Newsletter. Delivered weekly, and absolutely free.

(there's also a Daily Update, if you're looking for an even larger dose of training-related goodness.)

NB : If you'd like to write a guest post for Straight to the Bar - I love hearing how other people are training - get in touch. And if you've got a fitness competition or seminar coming up, add it to the calendar.

Look forward to hearing from you.


Over to you. Leave a comment below, or send us a tweet :


blog comments powered by Disqus
Straight to the Bar Strength Kit

Are You as Strong as You Could Be?

Grab the Straight to the Bar Strength Kit.

Training Guides, eBooks and of course the Strength & Fitness Newsletter. Absolutely free.