Performance – Chaski Store

Nasal vs Oral Breathing During Exercise: What Happens as Intensity Increases

by Consuelo SotoBreathwork, English, Performance, Science, Validations March 17, 2026March 17, 2026No Comments

How breathing patterns shift across ventilatory thresholds and what it means for endurance training, exercise physiology, and respiratory efficiency. Breathing is one of the most important physiological processes during exercise, yet it is rarely something athletes or coaches actively observe. As exercise intensity increases, the way we breathe changes significantly. Understanding the transition between nasal …

Breathing Patterns and Lung Function: What Endurance Athletes Can Learn from Recent Research

by Consuelo SotoBreathwork, Performance, Science March 13, 2026No Comments

Breathing is the most constant movement we perform throughout the day. Yet it is also one of the least examined aspects of human physiology. For endurance athletes and coaches, breathing is usually associated with ventilation, oxygen uptake, and the response to exercise intensity. But recent research suggests that something even more basic may matter just …

Breathwork for Endurance Athletes: How to Integrate Breathing Training Into Your Program

by Consuelo SotoBreathwork, English, Performance, Science March 10, 2026No Comments

In recent years, breathwork has moved from yoga studios and mindfulness apps into the world of performance training. Coaches and athletes are increasingly recognizing that breathing is not only a passive process but also a trainable component of physiology. For endurance athletes in particular, the way we breathe influences efficiency, recovery, and the interaction between …

Unlocking Endurance: The Science and Practice of Zone 2 Training

by Consuelo SotoEnglish, Performance, Science August 29, 2025February 18, 2026No Comments

In the endurance sports world, few topics have generated as much discussion lately as Zone 2 training. Once considered a basic form of “long, easy miles,” this intensity zone is now at the center of debates among coaches, athletes, and scientists. But what exactly is Zone 2, why does it matter, and how can athletes make …

Breaking your limits: how to train and improve VT2 for high intensity

by Consuelo SotoEnglish, Performance, Science July 23, 2025February 18, 2026No Comments

In our constant pursuit of unraveling the secrets of endurance performance, we’ve already explored the First Ventilatory Threshold (VT1) as the foundation of our endurance. Today, we’ll raise the intensity to understand the next physiological milestone: the Second ventilatory threshold (VT2). What is the Second Ventilatory Threshold? The Second Ventilatory Threshold, commonly known as VT2 or also called …

First Ventilatory Threshold (VT1): The physiological key to your endurance performance

by Consuelo SotoEnglish, Performance, Science July 1, 2025February 18, 2026No Comments

As experts in physiology and performance, we know that endurance success lies in deeply understanding our body’s signals. Today, we’ll delve into a fundamental concept for athletes and coaches: the First Ventilatory Threshold (VT1). The First Ventilatory Threshold, or VT1, is a critical physiological point during progressive exercise. It represents the exercise intensity at which a …

Why Monitoring RPE—and Comparing It to Respiratory Frequency—Matters More Than You Think

by Consuelo SotoEnglish, Performance, Science June 13, 2025February 12, 2026No Comments

In endurance training, Rating of Perceived Exertion (RPE) has long been a trusted compass—an intuitive guide to how hard an athlete feels they’re working. But how reliable is this perception in real-time, especially under fatigue, heat, or glycogen depletion? More importantly, can we measure how well athletes are controlling their RPE, and should we compare what they …

Race Pacing Starts with Physiology: Why Matching Distance to Your Thresholds Matters

by Consuelo SotoEnglish, Performance, Science June 11, 2025February 18, 2026No Comments

Success in endurance sports isn’t just about grit—it’s about precision. One of the most overlooked performance strategies is aligning your race pacing with your ventilatory thresholds. Whether you’re targeting a 10K or a 100-miler, understanding how each race maps to your body’s internal limits is critical. That’s exactly where CHASKi steps in. CHASKi is the first wearable designed specifically for …

Why Heart Rate Alone Isn’t Enough: Rethinking Performance Metrics

by Consuelo SotoEnglish, Performance, Science January 30, 2025February 12, 2026No Comments

For decades, heart rate has been the go-to metric for athletes and coaches aiming to optimize performance. It’s convenient, widely accessible, and often seen as a universal marker of effort. However, heart rate is far from perfect. Recent research, including findings from the Journal of Sports Science and Medicine (Tocco, 2015), highlights significant limitations of …

Ventilatory Thresholds vs. Lactate Thresholds: Are They Competitors or Complementary Metrics?

by Consuelo SotoEnglish, Performance, Science January 30, 2025February 18, 2026No Comments

Ventilatory Threshold and Lactate: Complementary Metrics for Smarter Training In the world of endurance training, metrics reign supreme. From heart rate to power output, athletes rely on data to refine their training strategies and achieve peak performance. Among these metrics, ventilatory threshold (VT) and blood lactate levels stand out as two of the most insightful …

Category: Performance