Key Features for Endurance Trainers and coaches
Optimize Athlete Performance with Train.Red’s Insights
🏃♂️ Fast Sport Test
Skip the masks and labs! Perform a simple muscle oxygen test anytime, anywhere to assess your athletes and improve their training.
💪 Muscle Stamina
Track how well your athletes' muscles use oxygen during exercise. The better they balance oxygen supply and demand, the longer they can perform.
⚡ Muscle Efficiency
Monitor how well your athletes sustain medium-intensity efforts. In the "yellow zone," muscles use oxygen efficiently for steady performance.
The better your muscles get oxygen from your heart and lungs, the longer they can work. Use Muscle States 2 or the Supply & Demand feature to track and improve muscle stamina and aerobic capacity
This shows how well your muscles handle medium-intensity efforts. In the "yellow" state, muscles are great at using oxygen to keep you going efficiently, to improve your critical power.
This is all about your muscles' ability to perform high-intensity efforts (Anaerobic Capacity) like sprints. They use strong, but less efficient energy, leaving you out of breath and in need of recovery.
The better your muscles get oxygen from your heart and lungs, the longer they can work. Use Muscle States 2 or the Supply & Demand feature to track and improve muscle stamina and aerobic capacity
This shows how well your muscles handle medium-intensity efforts. In the "yellow" state, muscles are great at using oxygen to keep you going efficiently, to improve your critical power.
This is all about your muscles' ability to perform high-intensity efforts (Anaerobic Capacity) like sprints. They use strong, but less efficient energy, leaving you out of breath and in need of recovery.
PACING during crossfit
IN-APP FEATURES
The sensor checks the oxygen in your muscles and tracks how it changes. Then, using AI, it turns this info into helpful real-time data for you!
Profile + organisation
Create multiple profiles and set different levels for each. You can also add your team or organization for easy management.
live feedback features
Our smart algorithm tracks muscle recovery and intensity in real-time. View oxygen levels and muscle demand with graphs or live view. Use up to 4+ sensors at once!
Post session overview
After each session, check the muscle oxygen levels over time and distance. See the average time spent in different muscle states and how well your rest intervals worked.
Laps & timed sections
Analyze lap intensity to improve interval training and boost muscle efficiency for your athletes.
TRAIN.RED ECOSYSTEM
- Exercise Tests for Endurance Athletes and Rest Recommendations for Strength Athletes
- Cloud Functionality for easy access anywhere
- Team/Organization Structure with multiple users
- Advanced Analysis Options to track progress
- Go Live and record workouts with a data overlay
WE RECOMMEND
Endurance trainers and coaches, we highly recommend the 4x FYER sensor. It’s the most versatile and lightweight Muscle Oxygen system worldwide. With four sensors, you can track left-right differences and monitor multiple athletes at once.
Buying the 4-sensor package gives you a significant discount and includes the FYER sensors, software, and all the necessary accessories.
Train.Red FYER Muscle Oxygen Sensor + app
Description
Unlock next-level performance with the Train.Red FYER, the most advanced wearable muscle oxygen sensor on the market. While athletes invest in equipment, training plans, and supplements, the true driver of performance is often overlooked: your muscles.
With real-time muscle oxygen (SmO₂%) tracking, FYER helps you optimize training, recovery, and performance like never before. Plus, you can connect 10+ FYER sensors to a single smart device—perfect for team monitoring and group training.
What’s in the box?
✔️ Train.Red FYER sensor
✔️ Charging cable
✔️ Patch Pack (20 adhesive patches)
✔️ Strap Pack (S-M-L sizes)
✔️ Waterproof USB plug
✔️ Durable travel pouch
WHAT MAKES TRAIN.RED DIFFERENT
Train.Red uses Near InfraRed Spectroscopy (NIRS) to measure your muscles. This technology isn't new to us—our scientific partner, Artinis Medical Systems, has over 20 years of experience, and together we’re developing the next generation of wearable Muscle Oxygen Sensors. We measure deeper and faster than any competitor. Our products are lightweight, easy to use, and packed with extra features.
Not only are our sensors the most advanced on the market, but we also turn your data into easy-to-understand, actionable insights. This makes it simpler than ever to incorporate muscle oxygen data into your daily training or perform tests without needing a lab.
Testimonials
Christian Pirri
Athlete & Coach
I use Train Red regularly, on the one hand to make pause control between intervals more efficient but also to control increased SMO2 saturation in the muscle during aerobic training sessions.
Gommaar d'Hulst
PhD (@WOD_science)
The days of bulky, complicated devices are over. Train.Red has broken new ground with user-friendly sensors. It can be effortlessly attached, and the app shows the data in a simple GUI that anyone can comprehend.
Roman Fomin
PhD Director of Sport Science UFC
We (UFC) are taking performance improvement to the next level, using real-time energy systems assessment on both systemic and peripheral levels.
Sarah Thivent
Sports scientist
As a researcher, I needed to measure muscle oxygen saturation (SMO2) during the cycle ergometer tests of my patients. I then discovered Train.Red, I use it every week and it meets my needs very well. It's a simple tool that provides very important information if one is aiming for improvement or research purposes.
LEARN WHAT MUSCLE OXYGEN CAN DO FOR
