by QT2 Systems
A great triathlon and related podcast hosted by QT2 Systems! At QT2 Systems, our mission is to help others achieve goals, cross finish lines, gain healthier minds, bodies, & spirits, and have some fun along the way. With a proven set of QT2 protocols, our coaches help guide athletes of all levels to the finish line - helping make dreams come true along the way. Learn more about QT2 Systems at www.qt2systems.com.
Language
🇺🇲
Publishing Since
3/10/2011
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February 21, 2026
<div class="paragraph normal ng-star-inserted" data-start-index= "230"><span class="ng-star-inserted" data-start-index="243">This audio overview, titled <strong>"Under the Hood: Mapping Muscle Fiber Utilization to Training Zones"</strong> is a deep-dive overview where we explore the physiological anchors that define the QT2.0 training system. Rather than focusing on arbitrary percentages, we examine how</span> <strong class="ng-star-inserted" data-start-index="409">Critical Power (CP)</strong> <span class= "ng-star-inserted" data-start-index="428">and</span> <strong class= "ng-star-inserted" data-start-index="433">Critical Speed (CS)</strong> <span class="ng-star-inserted" data-start-index= "452">serve as the definitive</span> <strong class= "ng-star-inserted" data-start-index="477">asymptote</strong> <span class="ng-star-inserted" data-start-index="486">and boundary between physiological stability and instability.</span></div> <div class="paragraph normal ng-star-inserted" data-start-index= "230"> </div> <div class="paragraph normal ng-star-inserted" data-start-index= "548"><span class="ng-star-inserted" data-start-index="548">We break down the transition of energy systems from the steady-state recruitment of</span> <strong class="ng-star-inserted" data-start-index="632">Type I (slow-twitch)</strong> <span class= "ng-star-inserted" data-start-index="652">muscle fibers in Z1 to the</span> <strong class="ng-star-inserted" data-start-index= "684">Type IIA Oxidative</strong> <span class="ng-star-inserted" data-start-index="702">and</span> <strong class="ng-star-inserted" data-start-index="707">Type IIA Glycolytic</strong> <span class= "ng-star-inserted" data-start-index="726">fiber recruitment that characterizes the move through Tempo (Z2) and Threshold (Z3)</span><span class="ng-star-inserted" data-start-index= "818">.</span></div> <div class="paragraph normal ng-star-inserted" data-start-index= "548"> </div> <div class="paragraph normal ng-star-inserted" data-start-index= "548"><span class="ng-star-inserted" data-start-index= "818">Finally, we look at what happens when you "raise the roof," moving into maximal aerobic intensities that recruit </span><strong class="ng-star-inserted" data-start-index="933">Type IIX</strong> <span class= "ng-star-inserted" data-start-index="941">fibers and draw from your finite anaerobic tank, known as</span> <strong class= "ng-star-inserted" data-start-index="1000">W′</strong> <span class= "ng-star-inserted" data-start-index="1002">or</span> <strong class= "ng-star-inserted" data-start-index="1006">D′</strong><span class= "ng-star-inserted" data-start-index="1008">.</span></div> <div class="paragraph normal ng-star-inserted" data-start-index= "548"> </div> <div class="paragraph normal ng-star-inserted" data-start-index= "548"><span class="ng-star-inserted" data-start-index= "1008">Discover how understanding these internal shifts allows you to move beyond "no-man's-land" training and toward a truly deliberate and intentional approach to performance</span><span class="ng-star-inserted" data-start-index= "1179">.</span></div> <div class="paragraph normal ng-star-inserted" data-start-index= "548"> </div> <div class="paragraph normal ng-star-inserted" data-start-index= "548"><span class="ng-star-inserted" data-start-index="1179">*This audio overview is AI-generated off of QT2 Systems' knowledge-base of source materials.</span></div>
February 14, 2026
<p>This audio overview, titled <strong>"Raise Your Ceiling or Raise the Roof,"</strong> provides a deep dive into the <strong>Athletic Architecture model</strong> used by QT2 Systems to determine an athlete's ideal training focus. The episode explores the critical relationship between an athlete's sustainable threshold - their <strong>"ceiling" </strong>- and their absolute high-end capacity - their <strong>"roof"</strong>.</p> <p>The discussion centers on how the ratio between <strong>Critical Power/Speed</strong> and <strong>power/speed at</strong> <strong>VO2 Max</strong> defines an athlete's physiological state and dictates which of two primary training paths will offer the highest return on training investment:</p> <ul> <li><strong>Raising the Ceiling:</strong> The hosts explain that for athletes in an <strong>Anaerobic physiological state</strong> (ratio < 85%), the "attic space" is too large. In these cases, the priority is a <strong>Build/TH block</strong> designed to lift the ceiling closer to the roof, making more of the athlete's existing capacity usable for longer durations.</li> <li><strong>Raising the Roof:</strong> Conversely, for athletes in an <strong>Aerobic physiological state</strong> (ratio > 88%), the "attic" has become a "crawl space," meaning the ceiling is pushed right against the roof. The hosts discuss how a <strong>VO2 Max block</strong> can be used as a targeted intervention to lift the absolute upper limit, thereby creating the necessary physical space for the threshold to grow in the future.</li> </ul> <p>Throughout the overview, the hosts emphasize the importance of <strong>intentional training</strong>. By using testing data to identify whether an athlete needs to focus on their sustainable potential (the ceiling) or their absolute capacity (the roof), coaches can avoid a "scattershot approach" and ensure that resources are not wasted training energy systems that are already well-developed. The episode concludes by reviewing how these physiological decisions fit into a broader framework that also considers practical factors like injury history and race proximity.</p> <p>*This audio overview is AI-generated off of QT2 Systems' knowledge-base of source materials.</p>
December 17, 2025
<p>Welcome to the QT2 Podcast Series Race Recap.</p> <p>For this series, we have invited our athletes to come and talk about their race day experiences. We'll cover their journey to the starting line, course details, pre-race and race day logistics, travel and expenses, and more.</p> <p>Episode 3 takes us to the 2025 IRONMAN 70.3 World Championship in Marbella, Spain. Listen on as QT2 athletes Gretchen Cooney, Chelsea Conway and Ryan Zelinski tell you about their experiences racing on this beautiful and challenging course. Hear about how they qualified, their travel experiences getting and staying in Marbella, training guidance and more. Stay to the end for some valuable tips from these experienced and accomplished triathletes.</p> <p>Learn more about QT2 Systems at www.qt2systems.com</p>
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A great triathlon and related podcast hosted by QT2 Systems!
At QT2 Systems, our mission is to help others achieve goals, cross finish lines, gain healthier minds, bodies, & spirits, and have some fun along the way. With a proven set of QT2 protocols, our coaches help guide athletes of all levels to the finish line - helping make dreams come true along the way. Learn more about QT2 Systems at www.qt2systems.com.
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