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 Have you reached a plateau in either your athletic performance or your weight loss? Ever wonder how many nutrients you lose on a long run or how to replenish them afterwards? Do you know what heart rate training zone you should be training in to maximize your workout session or to reach your performance goals?

Learn more about Metabolic and Performance testing options by scrolling or clicking the links to the right! 


Metabolic Efficiency Testing (MET)




By using state of the art testing equipment we can determine key data specific to YOU and your athletic needs. 




Why Metabolic Testing?

  • Get exact caloric needs for training and racing
  • Get precise heart rate training zones
  • Lower your risk of GI distress by avoiding overconsumption of calories
  • Establish % fat burned vs. % carbohydrates burned at each phase of effort
  • Learn your unique “crossover point” where you convert from burning fat to burning carbohydrates




Who Needs Metabolic Testing?

  • Athletes-beginner to elite
  • Anyone monitoring their calories
  • Those preparing for an endurance race

What is Metabolic Efficiency Testing (MET)?

  • A lab-based test (using a mask) of your oxygen consumption vs. carbon dioxide production
  • It can be used to tell you how “metabolically efficient” you are—meaning, are you able to train at a sustainable pace/power for an extended period of time on little to no caloric consumption? Is your body efficient at using its own innate stores of fat to create energy for you?
  • After diet and exercise changes, we recommend retesting you to see if you have become more metabolically efficient (pushing your crossover point to the right where your fat consumption continues to outpace your carbohydrate needs) and adjust your training zones accordingly

What to Expect with Metabolic Efficiency Testing (MET)

We know, you are a Type A athlete who needs to understand what we are going to do to you…here’s what you can expect:


  • No exercise for 24 hours prior to the time of the test
  • Fast for 12 hours (only water the morning of test)
  • Bring: water bottle, workout appropriate clothes, signed waiver, your bike (if applicable), HeartRate monitor and HR watch, towel to shower afterwards if you would like
  • Arrive at the studio rested and about 15 minutes before the test to get set up and go over the testing instructions


After a brief warmup on either the treadmill or bike, we will get you fitted with a sanitized mouthpiece/mask. The next part is easy, you do what you do best…run or bike!  We start at a very easy speed/wattage to let you get acclimated to the mask. We will then start increasing your effort in 5 minute increments. We will keep going until we see your crossover point or you say you’re done. Typically we will try to get one or two more stages to compile a little more data for you then we will allow you to recover to get our final bit of data on how long it takes you to recover back to a more metabolically efficient (or fat burning) range.


We’ll let you cool down, clean up and we will have a short 10-15 minute review. It will take us about a week to compile all your data, make some pretty charts and get your results to you via email.  From there, we can give further guidance for how to help you become more metabolically efficient by changes to your workouts or your nutrition.


Many athletes choose to be retested in 6-12 weeks to see how they have improved their numbers by making their workouts and diet more metabolically efficient. We have seen significant changes in as little as 5 weeks!

What is included in MET?

Although this testing is very scientific in nature, we take the time to process all the data and put it in very user friendly graph form as well as a written explanation of your results. We can provide you with your personalized heart rate training zones from your treadmill test or from a bike test.

Why we are excited about MET

A little background from Dr. Collins… For my many years in endurance sports, I have been baffled by all the contrasting info you get from books, magazine articles, etc about what to eat and why.  As someone with a science background, and as an athlete myself, I could see that a raceday nutrition plan that worked for my friends clearly did not work for me.  When I trained for my first Ironman, I was constantly being told to consume 200-300 calories per hour on the bike.  Ugh, that made me feel awful and definitely upset my stomach. I started testing myself and my nutritional needs by occasionally doing a century ride on a total of 300 or fewer calories…and feeling fine! So how could what all the others were doing make me feel so awful but restricting my calories let me still ride ok and feel better? Out of habit I would meet friends for a long run and have my 3 or 4 gels, a Fuel Belt full of electrolyte and calorie rich fluid and inevitably finish the run with everything still unopened and full. I kept reading article after article thinking someone else out there had to be like me. Finally, I listened to a lecture by Bob Seebohar about metabolic efficiency and it all made sense.  From that point on, I felt like I needed to follow this path and help others figure out their metabolic needs. We are each our own little science experiment…the variables (effort, climate, body composition) will always be changing, but by understanding our own unique metabolic needs, I think we can help you be your best! 

Race Simulation

We are able to do a race day simulation for you either as a bike, a bike to run brick or run so we can fine tune your nutritional demands for your “A” race.

Schedule your MET

Contact us to schedule your MET testing appointment, by clicking here.

Resting Metabolic Rate and Baseline Activity Test

RMR or Resting Metabolic Rate, helps you know precisely how many calories you are burning at rest. Our state of the art ParvoMedics machine allows us to test your RMR and break down your calorie needs at rest into fat calories and carbohydrate calories. Why is this important? Let’s say you are wanting to lose weight and are burning 60 calories an hour at rest. If 40 % are carbs and 60% are fat calories…why do you want to replace those fat calories? Your body has 50,000-80,000 calories stored as fat at any time. There is no need while trying to lose weight to replace these. 

We then take your test a step further so you can see how much your metabolic needs go up with just minimal activity.  You will do light movement (walking) on a treadmill then we will bump you up just a bit more to assess what your calorie burn is with moderate intensity.  These numbers are broken down into your distribution of fat calories and carb calories as well. 

If you are working with a nutritionist, this information is vitally helpful in putting together your nutritional needs and it is specific to you, not derived from a formula based on national averages. 

Schedule your RMR/Baseline

Contact us to schedule your RMR/Baseline testing appointment, by clicking here

Sweat Testing

Why Sweat Testing?

  • Sweat testing is great for athletes trying to dial in their fluid and electrolyte replacement needs
  • Ideal for those suffering with nausea, cramping or heavy salt marks while training and racing
  • We help you estimate your fluid and electrolyte replacement needs during an event or training

What to Expect With Sweat Testing

We will bring you into the FitnessRx facility and take your weight, do a urinalysis and place a sweat patch on your arm. You will perform an hour of moderate to hard effort on the treadmill or CompuTrainer and then we will remove the patch. We will check a post workout urinalysis and your weight. Give us time to have the test analyzed and review our data collected then we let you know your fluid and electrolyte needs for training and racing. 

Lactate Testing

Why Lactate Threshold (LT) Testing?

  • Athletes who want to know at what level of exertion to train
  • This is the level (LT) where your body switches from a more aerobic training mode to anaerobic training mode, thus more rapid fatigue on the muscles
  • Athletes trying to gauge how much recovery/cool down is needed to prepare for the next event

What to Expect With Lactate Testing

Lactate testing is going to require some discomfort. This is actually going to be a blood test from tiny pokes to your finger or earlobe. We will monitor your levels throughout the test to estimate your aerobic and anaerobic capacity and for your coach, your “LT” or Lactate Threshold.

Let us take the guesswork out of your training with precisely dialing in your heart rate training zones, your caloric and electrolyte needs and your workload burden when pushing your anaerobic system. All these tests, in the end, help you BE YOUR BEST. 

Lab Testing

Coming soon!


Metabolic Efficiency Testing (MET)

  • $249 with interpretation and full report
  • $175 without interpretation if you have a coach requesting data
  • $149 follow up retest within 6 months
  • SAVE!  Purchase Initial test and follow-up retest for $359 (retest must be taken within 6 months of initial test)





Lactate Threshold


Sweat Testing