Key Features for Sports Clinics & Performance Labs
Unlock the Power of Data with Train.Red. In a world full of data tools, Train.Red stands out. Scientifically validated, easy to use, and designed for real-world applications—our features provide you with clear insights for you and your clients.
🏃♂️ Fastest Sport Tests
Create your own protocols tests or use our built-in tools to easily measure muscle performance with just Train.Red sensors.
📊 Athlete & Trainer Reports
Get all your muscle data in one easy-to-read report. Share results with clients instantly or store them in the cloud for later.
📉 Raw Data Analysis
For the data experts, we let you export SMO2%, oxygen and hemoglobin changes, IMU data and more—so you can dive into your own analysis.
👥 Organization + Profiles
Switch between athletes in seconds. Our system allows multiple user accounts, making it easy to manage your entire team.

In Cardiorespiratory Fitness (CRF) tests, you usually measure heart rate, lung capacity, and blood flow, but muscle performance is often forgotten. With Train.Red sensors, you can easily measure muscle oxygen and include it in your tests or focus just on muscles.

The Fick principle tells us that VO2max equals the amount of blood pumped by the heart, times the oxygen your muscles take from the blood. Train.Red helps you measure how much oxygen your muscles are using.

Like heart rate or lactate, hemoglobin changes can help you:
- Track performance and identify key training points
- Monitor progress
- Set the right training intensity and pacing
- See how your training is working

For sports tests or research, all you need is a Train.Red sensor, a smart device, a strap, and a patch to keep everything in place and block outside light. You’ll be ready in just one minute!
In Cardiorespiratory Fitness (CRF) tests, you usually measure heart rate, lung capacity, and blood flow, but muscle performance is often forgotten. With Train.Red sensors, you can easily measure muscle oxygen and include it in your tests or focus just on muscles.
The Fick principle tells us that VO2max equals the amount of blood pumped by the heart, times the oxygen your muscles take from the blood. Train.Red helps you measure how much oxygen your muscles are using.
Like heart rate or lactate, hemoglobin changes can help you:
- Track performance and identify key training points
- Monitor progress
- Set the right training intensity and pacing
- See how your training is working
For sports tests or research, all you need is a Train.Red sensor, a smart device, a strap, and a patch to keep everything in place and block outside light. You’ll be ready in just one minute!





WODSCIENCE THRESHOLD TEST


Warm-up
Initial phase to set the baseline and get your muscles ready for action.
Muscle Stamina
Muscle State 2 & Zone 2 Training
Your muscles' ability to sustain low-intensity, endurance efforts. Breathing stays easy and comfortable because your muscles are getting plenty of oxygen.
Muscle Efficiency
Muscle State 3 & Zone 3 Training
Your muscles' ability to maintain medium-intensity, tempo efforts. In this "grey zone," your muscles use oxygen very efficiently to keep you going.
Muscle Power
Muscle State 4-5 & Zone 4 Training.
Your muscles' ability to perform high-intensity, sprint efforts. In this zone, your muscles rely on strong but inefficient energy pathways, leaving you out of breath and in need of recovery.
Muscle recovery
After exercise, your muscles need less oxygen, but your heart keeps working hard! Oxygen and nutrients help repair and restore your muscles. The faster this happens, the better your recovery will be!
We recommend
We highly recommend clinics and sports labs choose the 4 PLUS sensor system. The PLUS is the most advanced and fastest Muscle Oxygen system worldwide, offering deeper muscle measurements than any other system. With four sensors, you can assess left-right differences and establish a reference area.
Buying the 4-sensor package comes with a significant discount and includes the PLUS sensors, software, and all necessary accessories.







Train.Red PLUS Muscle Oxygen Sensor + app
Description
Take your monitoring to the next level with the Train.Red PLUS, the world's most advanced wearable muscle oxygen sensor. Engineered for elite athletes and performance-driven teams, the PLUS provides the fastest muscle oxygen measurements (100Hz) and the deepest insights into your body's oxygen utilization.
While you may invest time and energy in equipment, training, and supplements, the key to performance is understanding and optimizing the one thing that drives it: your muscles.
The Train.Red PLUS sensor provides muscle oxygen data, as well as additional metrics for deeper performance insights:
- Muscle oxygen (SmO₂%)
- Oxy-Hemoglobin (HbO2%)
- Deoxygenated Hemoglobin (DeOxy)
- Total Hemoglobin (HbDiff)
What’s in the box?
✔️ Train.Red PLUS sensor
✔️ Charging cable
✔️ Patch Pack (20 adhesive patches)
✔️ Strap Pack (S-M-L sizes)
✔️ Durable travel pouch
Technical Specs
- Size: 1.2 x 4.4 x 5.9 cm (0.5 x 1.7 x 2.3 in)
- Weight: 26g
- Measurement depth: Up to 25mm into the muscle
- Channels: 6 measurement depths (10mm, 15mm, 20mm, 30mm, 35mm, 40mm)
- Light source & detector distance: Up to 40mm
- Sweatproof: Yes
- Battery life: Up to 20 hours of active use
- Speed: 100Hz (fastest in its class)
- Connectivity: BLE & ANT+
- IMU: 9-axis motion tracking
- Onboard storage: Your data is always available
- Multi-device connection: Connect 10+ PLUS sensors to one smart device for team or group monitoring
- Materials: High-quality biocompatible ABS & TPE
Train.Red App – Your Data, Your Insights
The Train.Red PLUS works seamlessly with our Train.Red app, offering in-depth muscle oxygen insights that help you train smarter and more efficiently.
Compatibility
✔️ VO2Master Manager
✔️ Splendo Health & Fit
✔️ ANT+ profiles (Garmin, Wahoo, etc.)
✔️ Garmin Data Field Integration
✔️ Fulgaz and many more...
LEARN WHAT MUSCLE OXYGEN CAN DO FOR