Metabolic testing Sydney
RMR metabolic testing in Alexandria, Sydney
Resting metabolic rate (RMR) testing measures, rather than estimates, the calories your body burns at rest. Know your real numbers before you plan a cut, a bulk, or a season of training.
What an RMR test measures
An RMR test uses indirect calorimetry: you breathe into a mouthpiece while resting quietly, and the device measures the oxygen you use and the carbon dioxide you produce. From that, it calculates the calories your body burns at rest, before any training, digestion or daily movement is added on top.
Most nutrition plans start from a formula that estimates this number. An RMR test replaces that estimate with a direct measurement of your own metabolism, which is often quite different from the formula, especially for athletes.
Book RMR Testing
How to prepare
- Come in fasted, ideally with no food since the night before.
- No coffee or other caffeine on the morning of your test.
- Training the night before is fine, but skip exercise on the morning of the test.
- Wear something comfortable. You'll rest quietly for a few minutes before the test starts.
Who it is for
- Athletes planning a structured weight cut or a bulk
- Anyone whose weight isn’t responding to their current nutrition plan
- Clients on GLP-1 medication who want to protect lean mass while managing intake
- Athletes returning to training after injury or a break
Questions metabolic testing can answer
Metabolic testing is most useful when it answers a real question. These are the three we hear most often.
Why am I not losing weight?
You are eating what an app or formula says should work, but the scales are not moving. Formula estimates of resting metabolic rate can be well off your measured number. Testing shows whether your targets are built on the right starting point, so your dietitian can adjust them with confidence.
Am I under-fuelling?
If your energy, recovery or periods have changed during heavy training, your body may be conserving energy. A measured RMR well below what would be predicted for you can be one sign of low energy availability. Your dietitian looks at it alongside your history, and works with your GP where needed.
How much should I eat for marathon or HYROX training?
Big training blocks raise your energy needs well above everyday life. Starting from your measured RMR, your dietitian adds your training load to set daily targets, so you can fuel key sessions and recover instead of guessing.
Price and what’s included
What’s included
- Your full RMR report
- A detailed explanation of your numbers and how to use them
- Energy targets matched to your training and activity
- Results explained by an Accredited Sports Dietitian
Coming back for a repeat test later on? Same booking, same price.
What happens on the day
Arrival and rest
You arrive and rest quietly before the test starts, so your reading reflects a true resting state.
The test
You breathe normally into a mouthpiece for around 20 minutes while the device measures your gas exchange.
Results walk-through
Your Accredited Sports Dietitian explains your number in the same appointment and what it means for your plan.
What the number means and how we use it
Your RMR sets the floor: the energy your body needs before training, movement or digestion are added. From there, your dietitian builds in your training load and sets intake targets from a measurement rather than a guess. If body composition also matters to your goal, we’ll often review your RMR alongside a DEXA scan.
Take it further
RMR tells you what your body burns at rest. Pair it with a DEXA scan and you get the other half of the picture too: what your body is made of.
Pro Assessment
$225
- DEXA body composition scan
- RMR metabolic test
- Both results explained together in the same visit
Performance Plan
$500
- DEXA body composition scan
- RMR metabolic test
- 60-minute dietitian consult, plan built around your numbers