DEXA Scan

A DEXA (Dual-Energy X-ray Absorptiometry) scan works by using two low-energy X-ray beams of differing intensities that pass through the body. This allows it to get an accurate measurement of bone density and body composition, including fat mass, lean mass, and bone mineral content.

It is the gold standard measurement for body composition.

At the clinic, we use Hologic’s ‘Horizon DXA System’  and takes about 3-4 minutes total for the scan.

A qualified DEXA technician and Dietitian do result interpretation. They will guide you through the results with you after the scan. For more information about interpreting your results, read our blog post here.

DEXA scans are beneficial for a wide range of individuals, including athletes seeking to optimise their performance through detailed body composition analysis, individuals trying to lose weight or build muscle efficiently, and those at risk of osteoporosis who need bone density monitoring.

Resting Metabolic Rate Testing

To test this, we use indirect calorimetry using ‘The REEVUE‘ by Korr. This technique involves measuring the amount of oxygen a person consumes and the amount of carbon dioxide they produce during a specific period (10 minutes). This method is considered the gold standard for testing your resting metabolic rate (energy burnt at rest).

For athletes, this can be an accurate way to gauge how much nutrition is required to optimize performance, muscle growth and recovery. For the general population, it can aid in weight management strategies and assess potential metabolic disorders. Overall, it provides valuable data for tailoring nutrition and training programs.

Factors that can influence your results

It is important to be aware of how to appropriately prepare for a DEXA scan and RMR test to get accurate results. Factors such as water, food and caffeine can affect the scan results. Please see this blog post under the section “How to Prepare for a Scan” to read more.

Results

Gaining an understanding of your body composition, bone mineral density and metabolic rate can help to guide your nutrition and lifestyle habits. If you’re looking to optimise your body composition and see changes between scans, it is recommended to work with a Dietitian to get a personalised nutrition plan.

Image: Example of a DEXA scan results summary page