Why the InBody 770?

Well… NASA uses it. Need I say anything else.

I love NASA, so of course I explored our mutual appreciation for this groundbreaking technology. Over 11,000 government employees at the NASA Johnson Space Center use the InBody 770 as part of their health and wellness program replacing skin fold callipers. Evan Thomas from the Wellness and Fitness Services Manger said “We’re NASA, so we want to do everything we can to offer our workforce the best of the best, and at the time the Inbody was – and still is – the best of the best.” [1]. I can imagine the importance of health and body composition for astronauts needing to be in peak condition at a precise body composition to handle the strenuous conditions of space travel. I decided that, if it’s good enough for biggest collection of scientist, engineers, pilots and astronauts in the most technologically advanced organisation that leads the world in space exploration, then its good enough for Lifters League Strength and Conditioning Club.

Just to list a few other places that use the InBody 770 is used:

  • Columbia University
  • Harvard University
  • Institute for Medical Research – Switzerland
  • Johns Hopkins Medicine
  • Olympic Training Center Norway
  • Dallas Cowboys
  • Boeing Company
  • Red Bull Performance Lab
  • NASDAQ Corporate Headquarters
  • United States Navy Seals
  • Australian Defence Force
  • and much much more… [2]


Huge amount of skepticism surrounds BIA – Bioelectrical Impedance Analysis technology, but more so amongst a minority of uneducated meat heads with body dysmorphia who #science with every post with no actual reference to any science on any level (see how real science is done below). To be honest, I was a huge skeptic and at first brushed it off as a wannabe DEXA, but my science degree taught me that you need to check relevant research supporting a particular claim to check for accuracy, validity and credibility, that the proof needs to be infallible and replicable. So does the InBody pass the test?

InBody has a 98.4% correlation with DEXA

The world’s medical professionals have proven the clinical reliability of the InBody through numerous articles [3,4,5,6]. But as usual the fitness industry is about 10 years behind and all everyone cares about is DEXA DEXA DEXA. Considered the gold standard method in body composition analysis, the InBody has a 98.4% correlation with DEXA. Below compares the fat free mass measured via BIA and DEXA. This was done at the UCL Centre for Nephrology by Antje Fürstenberg and Andrew Davenport [7].

For the nerds their results showed that lean body mass (LBM) was highly correlated with good method agreement using DEXA as the reference test (r = 0.95, p < 0.0001; bias –0.88 kg, 95% CI –1.53 to 0.23 kg). Similarly, high correlation and good method agreement were found for fat mass (r = 0.93, p < 0.0001; bias 0.69 kg, 95% CI 0.03–1.36 kg). Seg- mental analysis of LBM revealed strong correlations be- tween LBM for trunk, left and right arms and legs (r = 0.90, 0.84, 0.86, 0.89 and 0.90, respectively, p < 0.0001)


Conventional BIA devices factor in empirical estimations such as body type, age and gender into their results. The InBody only uses impedance directly acquired from each subject to allow the InBody to provide accurate, personalised results. Another thing I learnt in my physics degree, is that anytime you use equations to reach a result you need to make assumptions, and with each assumption the potential for error increases. For example, when I get an MRI scan does it measure for me or do you need to adjust the settings to accommodate for my body type, age and gender? No. Why should it, this would just increase the room for error. The machine outputs raw data, then when the doctor examines the scans they assess me for me. Unfortunately other BIA use these empirical estimations to guess what the machine doesn’t measure for example, making rough single cylinder measurements over the arms and using equations to guesstimate the rest. InBody uses a Direct Segmental Measurement, a patented technology, to precisely measure the body as 5 separate cylinders: four limbs and the trunk. It makes no estimations or guess and measures your for you. Watch below to learn more about the InBody Technology.


As a general principle, regardless of the machine’s accuracy (which is very good), the ability of the machine to produce a consistent result over and over (“reproducibility”) is most important. We want to track change over time, not just exact stand aloe body composition measurements. We also need to know that if you are reading as having dropped by 5% body fat, that it is you who has dropped the fat, not simply a error on the machine’s part. The InBody 770 has a 99% reproducibility, making it one of the most reproducible body composition analysers on the market.

To improve reproducibility, we recommend that you follow the following guidelines:

  • Measure yourself at the same time of day each time (ideally first thing in the morning and on an empty stomach)
  • Never train before measurements
  • Follow the postural guides on the machine
  • Always use the same height measurement
  • Measure in airconditioning, and not while sweaty
  • Use the InBody wipes to thoroughly clean hands and feet
  • Take as much clothing and/or heavy jewellery off as possible

Regardless of what people say, in science this BIA technology is considered to be of the same standard as DEXA or Bod-Pod. The only people challenging it is the science-backward fitness community to give them some more social media air-time. It’s a bit like Trump challenging Climate Change, while his opinion goes against the entire global scientific community. Remember, if one person’s opinion goes agains the majority of the scientific community, it’s probably wrong. So in conclusion, you can trust the InBody 770 because NASA (and every other scientific community) uses it.


If your interesting in using our InBody 770 or any of our other facility and services contact us via email info@liftersleague.com.au or call our office (07) 3252 o673 or visit us at 15 Creswell Street, Newstead QLD 4006 during opening hours.


  1. https://www.inbodyusa.com/blogs/case-studies/102772481-how-inbody-helped-nasa-johnson-space-center-s-workforce-wellness-program-have-a-record-breaking-2015
  2. http://www.inner-image.com/resources/inbody-locations/
  3. http://www.nature.com/ejcn/journal/v63/n5/abs/ejcn200819a.html
  4. http://onlinelibrary.wiley.com/doi/10.1111/j.1442-200X.2008.02698.x/full
  5. http://www.bodyanalyse.no/studier/utter.pdf
  6. https://secure.jbs.elsevierhealth.com/action/consumeSsoCookie?redirectUri=http%3A%2F%2Fwww.clinicalnutritionjournal.com%2Faction%2FconsumeSharedSessionAction%3FJSESSIONID%3DaaaS23vmzYWXvbes8pIJv%26MAID%3DEhrxrLfxXHD8AtreI0nU3g%253D%253D%26SERVER%3DWZ6myaEXBLFhx%252B6Ws3Nrug%253D%253D%26ORIGIN%3D13848614%26RD%3DRD&acw=&utt=


1 Comment

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