Making Physiology Happen



The Portable, Affordable Metabolic Cart for Exercise Physiologists



metabolic test

Help your clients train smarter, maximize health and increase athletic performance.  Offer data driven modifications to diet and fitness programs.

With an MC-PEAK you can offer your clients

  • A baseline of their current level of fitness
  • Assessment of the effectiveness of their current training plan
  • Identify areas where performance gains are possible
  • Identify individualized target heart rate and power zones for training
  • Quantitative analysis of current diet and exercise
  • Follow and track their progress


MC-PEAK Metabolic Cart for Human VO2 Max Measurement

  • Compact and portable
  • Affordable
  • Quick set up
  • Easy report generation
  • Customizable report, with your logo
  • Measures both O2 and CO2, increasing confidence in results.
  • No service contract
  • Free online training

Download a Brochure.


Upgrade option for Elite Athletes: MC-PeakPro

Cardio-Pulmonary Exercise Testing Market 2019-2026 Forecast | GE Healthcare (UK), Geratherm Medical AG (Germany), Hologic, Inc. (US), InBody Co., Ltd. (South Korea), Iworx Systems, Inc. (US)

Metabolic Cart Market 2019-2025 Growing Fast Estimated By Top Key Players-BD, MGC, Schiller, COSMED, KORR Medical Technologies, Geratherm Medical, Parvo Medics, Iworx Systems

Global Metabolic Cart Market 2018 – MGC, Schiller, COSMED, KORR Medical Technologies, Geratherm Medical, Parvo Medics, Iworx Systems

WiseGuyReports.Com Publish a New Market Research Report On – “Metabolic Cart Market 2017 Global key Players – GE Healthcare, Hologic, Inc, Iworx Systems, KORR Medical Technologies, Inc Analysis and Forecast to 2022”.

99strategy: New Market Research Report: The analysis covers the present market size of the us Metabolic Cart market and its growth rates supported five year history knowledge in conjunction with company profile of key players/manufacturers like BD, MGC, Schiller, COSMED, KORR Medical Technologies, Geratherm Medical, Parvo Medics, Iworx Systems,.

YouTube Video

See iWorx in action – watch the video

Metabolic Assessments and VO2 Max Testing: Iron Athlele’s Interview with Zach Ziegler


Reports are easily customized :

  • Add your Logo and Address
  • Choose what sections are included in the report.
  • Choose what text gets added to each section.
  • Choose which graphs are exported to the report.
  • Save and Load Report Templates.

The report is saved as a html file which can be easily edited with Word or Libre Office.


What is VO2 Max?

VO2 max is a common method for measuring the maximum ability of your body to metabolic testingconsume oxygen and is a key indicator of your potential as an endurance athlete. It is one factor that can determine an athlete’s capacity to perform sustained exercise and is linked to aerobic endurance. Endurance depends on your ability to consume oxygen at a high rate for a sustained period of time. Though this measurement is generally considered the best indicator of an athlete’s cardiovascular fitness and aerobic endurance, a high VO2 max alone does not always ensure success.

What is Metabolic Testing?

Metabolic testing measures an athlete’s individual physiological response to exercise.

The VO2 max test measures your client’s aerobic capacity using a metabolic cart. It’s an assessment that’s especially beneficial for serious and recreational athletes involved in endurance activities. Some examples of those activities are: cycling, rowing, running, triathlon, swimming, and cross-country skiing, among many others.  Measuring VO2 max accurately requires an all-out effort (usually on a treadmill, bicycle, or rowing machine) performed using a specific protocol. These protocols involve increases in the speed and intensity of the exercise and collection and measurement of the volume and oxygen concentration of inhaled and exhaled air. This allows for accurate measure of your maximum rate of oxygen consumption and carbon dioxide production.

A VO2 test will also show the anaerobic threshold. The anaerobic threshold (AT) is the Anaerobic thresholdlevel of exercise intensity beyond which the body can no longer provide adequate oxygen to the muscles and the point during exercise at which lactic acid starts to accumulate in the muscles. Exercise below the anaerobic threshold should be comfortable even though the exercise extends for long periods. Exercise above the anaerobic threshold will improve cardiovascular fitness, but will also cause discomfort, fatigue, and muscle soreness.

Knowing the unique anaerobic threshold can be used to design a workout plan that will improve fitness and maximize calories burned. Measurement of VO2max will provide a true assessment of an athlete’s level of fitness.

Also, if you train based on Heart Rate zones, assessing your maximum heart rate at your maximum oxygen capacity can additionally guide your training.

Why Metabolic Testing?

Metabolic testing can help endurance athletes of all levels. The iWorx PEAK will help you evaluate your client’s current level of fitness and help you create a targeted, effective training plan for performance improvement.  The iWorx PEAK will help you provide the edge your clients need to achieve either their performance or fitness goals.

The VO2 max metabolic test is ideal for those who wish to track how they are improving in a training or fitness program.

Fitness Assessment

LabScribe Metabolic Calculations

LabScribe automates and streamlines both the analysis and reporting of metabolic parameters from a test subject. The calculations are derived from the input data acquired during a test which would typically include oxygen and carbon dioxide concentrations, lung volumes, and heart rates. Raw data can be viewed in real-time within the LabScribe Main window.

Setup and Calibrate:

Streamlined setup and calibration reduces error and saves time.


  • Relative and absolute oxygen consumption (VO2)
  • Relative and absolute carbon dioxide production (VCO2)
  • Respiratory Exchange Ratio (RER)
  • Ventilatory Equivalent (VE/VO2)
  • Expired Minute Ventilation (VE)
  • Metabolic Equivalent (METS) and more


The Metabolic Calculations Module also allows these parameters to be plotted against time or each other to yield valuable information about the aerobic fitness of the subject. These plots include:
  • VO2, VCO2, RER vs. Time
  • VCO2 vs. VO2
  • VE vs. VO2
  • VE vs. VCO2
  • HR, VCO2 vs. VO2
  • %Fat
  • VE vs. Watts
  • HR, VO2/HR vs. Watts
  • VO2, VCO2 vs. Watts
  • VE/VO2, VE/VCO2 Vs. Watts
  • Resting Energy Expenditure (REE)
The Metabolic Calculations Module was enhanced considerably with the release of LabScribe V3 to serve our customers performing fitness assessment tests. Here are some noteworthy changes:
  • It is now possible to setup and save a subject profile while performing a fitness assessment test. During subsequent tests, the same subject profile can be loaded and data can be easily compared. This feature provides a convenient and simple way to track progress over time.
  • An intuitive user interface has been created to setup and customize training zones for subjects based on % of maximum heart rate or within a specific heart rate range.

Control Exercise Equipment

  • Treadmills: Treadmill that support the Trackmaster Protocol, such as treadmills from Trackmaster, Woodway can be controlled by Labscribe
  • Ergometers : Ergometers supporting the ANT+ FEC Trainer protocol can be controlled by LabScribe
  • Lode Ergometer: Lode Ergometers can be controlled by LabScribe.

Record ANT+ Sensor Data

Record data from various ANT+ sensors such as.
  • Heart Rate Sensors
  • Bike Power Sensors
  • Muscle Oxygen Sensors
Detailed information about using the modules is in the LabScribe Manual