• Body composition test in London

    Body composition test in London

    Measure and track improvements to your body composition

Body composition and health

Understanding your body composition goes far beyond putting numbers to physical appearance. The amount of body fat and distribution of our body fat as well as your lean mass levels and water levels can tell us a lot about ones health and potential imbalances or health risks that may be present.

Body composition is linked to and can influence a number of areas:

  • Inflammation and inflammatory conditions
  • Immune function and balance
  • Hormonal levels and balance
  • Cardiovascular disease
  • Type 2 diabetes and insulin resistance

Recently, there has been an increased awareness in relation to body composition and health. This has been demonstrated with the increased risk associated to complications with the likes of COVID-19.

The great news is that through changes to nutrition and lifestyle you can improve your body composition and lower your risk to many chronic diseases as well as complications with acute illnesses.

Knowing your starting point, creating an intervention and then tracking success can be a very motivational way to create lasting change.

What device do we use to assess your body composition?

At Steve Grant Health we have looked at a number of different devices and methodologies for assessing body composition. This included looking at research on specific devices, their accuracy as well as balancing it with the practicalities of repeat measurements, invasiveness of the methodology, exposure to radiation, cost and so forth.

Having looked at all these areas we decided to add the SECA mBCA 525 device to our clinic. This Bioelectrical Impedance Analysis (BIA) device allows us to repeat tests at any frequency due to no radiation exposure, and at a significantly lower cost compared to the likes of DEXA and MRI.

The SECA mBCA 525 has an exceptionally high accuracy and repeatability compared to gold standard assessments of body composition, and the research data on the SECA device demonstrated it’s effectiveness vs all other forms of BIA such as the popular InBody Machines.

Gold Standards of body composition testing

This device has impressive consistency with the respected gold standards of body composition assessment.

  • 1. Within 98% accuracy compared to the gold standard 4C model for fat free mass
  • 2. Within 98% accuracy for total body water in comparison to the D2O dilution method
  • 3. Within 95% accuracy for extracellular water in comparison to the NaBr dilution method
  • 4. Within 97% accuracy for muscle mass in comparison to the gold standard MRI

MRI Validation Study

“The validated eight electrode, segmental multifrequency Seca mBCA is an accurate tool for measuring body composition”

“Due to its quick and non-invasive measuring procedure the Seca mBCA is a recommended tool for the estimation of body composition”

(Jensen & Kluckmann)

European Journal of Clinical Nutrition

“When compared with DEXA, MRI-based BIA equations are more accurate for predicting muscle mass”.

(Westphal Et al, 2017)

What does our Body Composition Assessment cover?

The assessment covers the following areas of body composition and you will be presented with a PDF with your results in relation to norms and averages of similar populations accounting for gender, ethnicity etc:

Fat mass – as a percentage of the body and in Kg.

Skeletal Muscle Mass – This is represented as whole body in Kg and also segmented for left arm, right arm, left leg, right leg and torso. This allows you to also assess against your age and gender averages as well as see if there are any significant imbalances that might require adaptations to training to incorporate more unilateral (single arm/single leg) work.

Visceral Fat – This is the very problematic fat that accumulates around your organs, can increase inflammation and contribute to chronic disease. Managing this is crucial to optimal health and prevention of diseases like diabetes, heart disease and almost any inflammatory condition.

Total Body Water & Extracellular Water – This is important because water levels can fluctuate significantly, resulting in swings on the scales that we struggle to understand. Phases in your menstrual cycle, whether you are hydrated, are you eating low or high carbs, salt intake etc are all things that can make these numbers swing and make measurements on a simple set of scales a little crude and misleading.

Phase Angle – This looks at the number and health of somatic cells. Phase angle is established in the research for its ability to correlate with a person’s nutritional condition and general state of health.

Energy – Based upon your height and weight measurements your report will provide a guideline in relation to your resting energy expenditure and with some basic questioning we can predict what your total energy expenditure might be.

In addition to this we can create an additional PDF as a table to present multiple measurement results and also graphs to show trends in your results.

Sample Report Comparison Table

Who will perform the body composition assessment?

We have a team of qualified Clinical Nutritionists, Sports Nutritionists and Nutritional Therapists. They will perform the measurement session and you also have the option to work with those practitioners to help formulation recommendations relating to your results and the goals that you may have.

All of our clinicians have undergone training to perform the measurements and with their educational backgrounds and clinical experience are well placed to assist you with your goals as well as explaining the results.



Functional Medicine Nutritionist



Nutritionist & Health Coach



Nutritional Therapist & Health Coach

Frequently Asked Questions

Are there any contra-indications?

Whilst the research suggests that assessments with BIA is safe with all populations, we still currently operate a policy where the following clients are unable to do this test without the all clear from their specialist or medical professional. Anyone with the following:

• Pacemaker
• Defibrillator
• Nerve stimulator
• Within the first 12 weeks of pregnancy

What do I need to do before the measurement?

We have the following client instructions before taking the measurement to maximise the accuracy of the results:

1. Prior to the measurements it is important that you refrain from physical activity, as this will raise core body temperature, and this can skew the results. All measurements should take place before any exercise and in a rested and relaxed state.

2. The accuracy is also dictated by the accuracy of the weight and height measurements. Your weight measurements should always be taken under the same conditions with the same accurate measuring scales, this will be done in clinic or with scales provided by the clinician prior to your measurement taking place.

3. Ideally measurements are performed before a meal or some hours after.

4. Immediately before weighing, no large amounts of liquid should be consumed, and the bladder should be emptied.

What to expect as part of the assessment?

1. We will first assess your height, body weight and waist circumference as well as ask some questions about your general daily activity and exercise demands.

2. You will then be asked to lie down for at least 5-10 minutes before the measurement takes place. This allows for water to distribute evenly. As you are lying down electrodes will be placed on specific sites on your feet and hands and data will be in-putted.

3. It is important that you remain still during the measurement.

4. The measurement itself will take less than 1minute.

5. After the measurement has taken place, your practitioner can talk you through the results and after the session they will email over a PDF results document. For those performing the measurements as part of a consultation, your results will be taken in context with your goals and further information received as part of our client assessments and ongoing client support.

Options and Prices

Assessment and Report £50 + VAT.

A 30min time slot will be added to the clinician’s diary. This will give ample time to perform the measurements and also for the clinician to talk through your results with you.

For clients looking to run a body composition assessment with a consultation with one of our nutritionists, we include the body composition assessment as part of our normal initial consultation and follow up consultation fee’s.

The consultation fee’s and more about how we work can be emailed over to you in our client welcome pack. You have the option to book a 15min discovery call with one of our clinicians prior to booking the initial consultation.

Research Studies

Slowinski T, Lieker l, Otto B et al. Pilot study on the accuracy of bioimpedance analysis in detection of changes of body fluid composition in patients during a hemodialysis session. Abstract, 4. Jahrestagung der Deutschen Gesellschaft für, Nephrologie 2012

Bosy-Westphal A, Jensen B, Braun W, Pourhassan M, Gallagher D, Müller MJ. Quantification of whole-body and segmental skeletal muscle mass using phase-sensitive 8-electrode medical bioelectrical impedance devices. Eur J Clin Nutr. 2017 Mar 22 . doi: 10.1038/ejcn.2017.27. [Epub ahead of print] www.nature.com/ejcn/journal/vaop/ncurrent/pdf/ejcn201727a.pdf

Bosy-Westphal A, Schautz B, Later W. Kehayias JJ, Gallagher D, Müller MJ. What makes a BIA equation unique? Validity of eight-electrode multifrequency BIA to estimate body Composition in a healthy adult population. Eur J Clin Nutr 2013; 67: 14-21; doi:10.1038/ejcn.2012.160

S Peine, S Knabe, I Carrero, M Brundert, J Wilhelm, A Ewert, U Denzer, B Jensen and P Lilburn; Generation of normal ranges for measures of body composition in adults based on bioelectrical impedance analysis using the seca mBCA; International Journal of Body Composition Research 2013 Vol. 11 No. 3 & 4: 67-76

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