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I am a New Zealand registered nurse and nutritionist (Grad Cert Sci: nutrition, Massey Univ). I am a Certified Zone Instructor, and have worked teaching Zone diet principles to hundreds of clients over the last 10 years. More recently after finding that eating Paleo food choices was the "icing on the cake" health wise, I have become a Paleo enthusiast and teacher. Follow me on twitter @juliannejtaylor

Your BMI – is it fat or muscle? Surprising pictures – your weight has little to do with your body fat

Here is a compilation of body images to (hopefully) shock you into exercising, especially if you are older. And – if you already are, give yourself pat on the back.

Did you know that after the age of 30 – you lose 250 grams per year of muscle and gain 500 grams of fat? (reference)

Point 1: Weight on the scale does not indicate a healthy body fat.

I love this image from Jason Seib‘s post on his client Deb’s transformation. Deb stayed the same weight, but leaned out considerably. And is now impressively strong.

  • Waist went from 32.75 inches to 30 inches.
  • Chest went from 39.75 inches to 37.25 inches.
  • Hips went from 36 inches to 34 inches.
  • Upper arm went from 11.25 inches to 10.75 inches.

From CrossFit Revelation

This woman is 9 bls (4kg) heavier – yet looks leaner, especially in the abdomen

5 pounds of fat takes up THREE TIMES as much space as 5 pounds of muscle. If you’re shedding fat and gaining muscle your weight might not change but your clothes will fit better and you’ll look trim and fit.

And here is another picture of the same woman 2 years apart – in both she is 160lbs, yet looks far slimmer in the second photo with more muscle mass and less fat. Image is from this post: Body Composition: That ‘Last Five Pounds’, and How to Deal With ‘Problem Areas’

160lbs

And another photo Ifat muscle found on sexyfreak.com

 

Taking a look on the inside – DXA scan

A DXA (DeXA) scan (dual-energy x-ray absorptiometry)  is a low dose x-ray known as DXA, to determine percent fat. DXA can be used to estimate bone density, lean mass and fat mass.

Here is a cool colour pic of a DXA scan (link) – you can distinguish fat from muscle and bone.

From this article:  BMI scale not accurate measure for obesity

2 men – exactly the same BMI (What is BMI? – it is a ratio of weight to height, it does not tell you if that weight is healthy muscle, or unhealthy fat) DXA images below are of two adults with the same BMI. While their weight and height may be similar, resulting in the same BMI, the person on the right has twice as much body fat as the person on the left. DXA images allow doctors to analyse bone density, lean mass and fat mass.

Man on left:
Muscle Mass 88.7 kg
Fat Mass 13.8 kg
Bone Mass 3.8 kg
Body Fat 13%
Total Weight 106.3 kg
Height 1.83 m

Man on right:
Muscle Mass 69.5 kg
Fat Mass 25.8 kg
Bone Mass 2.8 kg
Body Fat 26.3%
Total weight 98.1 kg
Height 1.76 m

Many top athletes for example some of our (New Zealand’s) rugby players (yes we did win the world cup) would measure obese according to their BMI. For example Sonny Bill Williams has a BMI of 29 – bordering on obese (height 6’4″, weight 238lbs)

Want more eye-candy? – check out this video: Sonny Bill Williams removes his shirt

And now for an amazing cross section of a leg: an aging triathlete, compared to a couch potato. A graphic illustration of the importance of keeping active – particularly strength exercise to maintain muscle mass

The Incredible un-aging athlete from this study Chronic Exercise Preserves Lean Muscle Mass in Masters Athletes

And here is a rather sobering view of  the inside if you are very overweight

Crushed lungs, strained joints and a swollen heart – the extraordinary scans that reveal what being fat does to you

Take home message – keep up with your weight resistant exercise and eat real food

Links to read:

Must view: Body Fat Pictures and Percentages – What people look like at different body fat percentages, also great comparison pictures of same body fat combined with different amounts of muscle

BMI – real people in pictures: A collection of pictures of people with their height, weight and BMI, clearly pointing out the variation in sizes at different BMIs

Lifelong Exercise and Strength Training in Older Adults

Exercise only preserves the muscles you actually use

Exercise dosing to retain resistance training adaptations in young and older adults

Seniors can still bulk up on muscle by pressing iron

Sarcopenic obesity: strategies for management.

http://www.happyhealthylonglife.com/happy_healthy_long_life/2011/06/bones.html (the importance of weight resistant exercise for strong bones, ignore the diet advice)

 

 

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