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Use the software's automatic analysis. By clicking "Analyze data," the algorithm will offer you three possible analyses. Each analysis may provide several results that you must analyze manually. You can use the algorithm in three ways: Define the area of effort Reposition the start and end of the test using the black vertical bars. The start of the effort is at the end of the warm-up. It is characterized by a stability of the expiratory volume (VE). The end of the effort is j

ZONEX Unboxing Discover what ZONEX consists of and how to prepare it for testing. Assemble ZONEX Assemble ZONEX with the mask. Adjust ZONEX Adjust the mask and ZONEX onto your athlete's head.

During a test, the easiest way will be to connect your home trainer or sensors so that everything is managed by the software. What is the purpose of the protocol? The protocol generates effort signals that are associated with ventilatory thresholds and, more broadly, with training zones. The protocol is essential to obtain a complete test report. You performed a test in free mode Performing a test in free mode means that no sensors are connected. The software does not record

Provide athletes with comprehensive reports Following a test with ZONEX, the PAIRFS software allows you to write a complete test report. View a test report here: link to a sample report . Enter user information Select your test in "Analyze tests". First, enter your athlete's data in "Athlete Info". Fill in Last Name, First Name, date of birth, weight, height and comment(s). Enter the protocol You took a free test or an outdoor test: Verify that the protocol is correctly edit

Consult the user manual for your mat. Does your mat have a Bluetooth FTMS protocol? Check your mat's specifications to see if it's compatible with this FTMS standard. Verify that the connection protocol isn't a proprietary one. Does your mat have a specific connection procedure? Some devices have secure connection procedures. Check the procedure in your training device's user manual. Is your mat compatible with third-party applications? You can check with the manufacturer whe

What's the problem with Garmin heart rate monitors? The new Garmin heart rate monitors have a secure connection. Secure mode is indicated by a green light flashing twice every 5 seconds. You must exit this secure mode and switch to open mode to connect your heart rate monitor to the PAIRFS software or app. The heart rate monitor is connected but I have no data (symptoms). When you tried to connect your heart rate monitor, it appeared in the "Heart Rate" line and you successfu

Usage tips for outdoor use. It is best to have your ZONEX fully charged. The phone should remain close to the mask. What do you need to do an outdoor test? Connect your smartphone application to your license using the QR code in the "Outdoor Tests" tab then "QR Code". Follow the steps on the phone to set up the test. PAIRFS application available on Android and iOS . What should be done after the test is completed? The PAIRFS application transmits the test to the PAIRFS server

The technology was validated in a clinical study conducted with the Grenoble University Hospital. This article details the principle and methodology. A technology for measuring ventilatory thresholds PAIRFS' first products are designed for sports professionals and athletes and allow for the measurement of ventilatory thresholds. The objective of the measurement is to determine the exercise intensities to which these thresholds correspond. Training zones and thresholds. More i

Analyzing gas exchange – VO₂, VCO₂, ventilation – is now the gold standard for understanding exercise physiology, determining ventilatory thresholds, and personalizing training. However, the market offers highly contrasting technological approaches: on the one hand, cumbersome, complex, expensive, but extremely precise systems; on the other, much more affordable and simpler devices, but with limited accuracy. This article discusses data quality, trade-offs, and why PAIRFS dec

ZoneX analyzes respiration and it is important that it is used correctly to provide reliable and high-quality information. The following video explains how to do this: Steps to attach ZoneX to the mask Here are the logical steps to mount ZoneX onto the respirator mask, as illustrated in the video: Insert the internal breathing tube into the mask — this tube acts as a conduit between your mouth (or airway) and the ZoneX sensor. It ensures that inhaled/exhaled air passes into

What better way to discover what's inside the box of the first device capable of measuring your ventilatory thresholds (VT1 / VT2) directly in the field than with a complete unboxing ? 📦 What's in the ZoneX box? In the video, you will discover: ✔️ The ZoneX device Compact and lightweight (210g), it's designed to capture your respiratory flow with high precision while remaining comfortable. Its architecture was conceived for real-world use, outside of a laboratory setting.

Training zones, ventilatory thresholds, and physiological responses are not universal. They vary considerably depending on athletic experience, age, sex, sport, and even lifestyle . Understanding these differences is essential for personalizing a training plan and achieving measurable progress—while avoiding common mistakes associated with overly generic zones. Here is a clear overview, based on the available scientific data. 1. Beginner vs. Trained Athlete 🔶 Beginner VT1 a

Training zones are an essential tool for structuring endurance training. However, their use often remains imprecise: poorly calibrated zones, misinterpreted intensities, misunderstood indicators… The result: ineffective sessions, limited progress, and even a risk of overtraining. Here are the most frequent mistakes , and above all how to avoid them with an approach focused on breathing and ventilatory thresholds. Mistake 1 — Thinking that heart rate provides precise zones H

When discussing training zones, many refer to fixed percentages of VO₂ max, heart rate, or power. However, ventilatory thresholds — VT1 & VT2 — are not immutable . They evolve with training, fitness level, physiological adaptations, and… inter-individual differences. Understanding their variability is essential to remaining effective, relevant, and accurate in programming. Why do VT1/VT2 change with training? Improved aerobic endurance : As the body adapts to training—parti

Connected devices have transformed training: heart rate, power, cadence, speed, oxygen saturation… but one essential parameter is still largely absent from current wearables: breathing . However, breathing is the most direct, sensitive and reliable physiological signal for understanding what is happening in an athlete's body. After years of innovations focused on cardio and power, a new generation of sensors is emerging: respiratory wearables . And this revolution begins no

Zone 2 has become an essential term in endurance training. Cyclists, runners, triathletes, coaches, and scientists alike are all talking about this "moderate endurance" work, which forms the basis of sustainable performance. But what exactly is Zone 2? How can you be sure you're training there correctly? What physiological benefits can you really expect from it? And for which activities is it most useful? We take stock, with an approach centered on physiology — and on ventil

Ventilatory thresholds VT1 and VT2 are essential physiological benchmarks for structuring intelligent training. Unlike traditional methods based solely on heart rate, power, or percentages of FTP, ventilatory thresholds directly detect the body's internal response to exertion. Building a plan based on VT1/VT2 transforms training into a more precise, reproducible, and individualized process. This article shows you how to use your ventilatory thresholds to structure your zone

And how does this fit into the long-term vision of a portable CPET? In endurance sports, breathing is one of the most powerful physiological signals. Yet, measuring respiratory gases remains a complex field, dominated by cumbersome, expensive systems reserved for laboratories. At PAIRFS, we want to change that: to make key metabolic information accessible to all athletes , on the field, during training. But to achieve this, one fundamental rule must be respected: 👉 Don't me

Ventilatory thresholds (VT1 and VT2) have become central indicators for measuring aerobic performance, structuring training zones, calibrating intensity and tracking the progress of athletes. Unlike traditional methods based on heart rate or power, ventilatory thresholds directly describe the body's internal physiological response to exertion. This comprehensive guide explains: What are VT1 and VT2? how they measure themselves, their link with the energy sectors, their role

Zone 2 has become a staple of endurance training. It's presented as the zone of fundamental endurance, mitochondrial development, and "easy but useful" work. But in reality, zone 2 only makes sense if your VT1 is correctly identified . If your VT1 is misplaced — too high or too low — then your entire zone 2 becomes incorrect : inadequate intensity, diminished adaptations, unnecessary fatigue… and stagnant progress. Here's why. 1. Zone 2 comes from VT1, not from some magic p