Will Intervals Ruin A Zone 2 Training Ride? The Science Of Mixed-Intensity Workouts. (#234)
Feb 5, 2025
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Discover the myth surrounding high-intensity intervals and Zone 2 workouts. Training intensities can actually complement each other, enhancing performance rather than hindering it. Learn about the importance of diverse training methods for overall fitness improvement. The podcast dives into the science of energy sources during exercise and the principle of progressive overload. It's a fresh take on optimizing endurance training for athletes of all levels, encouraging a balanced approach to workouts.
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Quick takeaways
Combining higher-intensity intervals with Zone 2 training enhances overall fitness and helps improve an athlete's performance.
Progressive overload emphasizes the importance of gradually increasing training stress to promote continuous adaptation and performance improvement.
Deep dives
The Role of Intervals in Endurance Training
Combining intervals with zone two endurance training is crucial for building overall fitness and improving an athlete's performance. Engaging in high-intensity intervals helps to train various energy systems, enabling athletes to increase their workload capacity over time. This method can counteract misconceptions surrounding the idea that intervals negate fat oxidation benefits associated with zone two training. Rather, utilizing all training intensities synergistically enhances metabolic improvements, as athletes can still efficiently burn fat across various intensities, even during higher exertion levels.
Understanding Human Metabolism
Athletes burn a mixture of fat, carbohydrates, and ATP at all intensity levels, which illustrates the complexity of human metabolism. The percentage of each fuel source utilized changes in response to exercise intensity, and it is not beneficial to think in absolutes. Mitochondrial density, vascularity, and muscle glycogen storage can be increased through training across various intensity levels, highlighting the importance of a well-rounded approach. This understanding reinforces the significance of not narrowly focusing on fat-burning alone, as essential adaptations occur throughout the entire training spectrum.
Progressive Overload as a Training Principle
Progressive overload is a fundamental principle in training that emphasizes the need to gradually increase training stress to enhance performance. By systematically increasing volume or intensity over time, athletes can ensure continuous adaptation and improvement in their capabilities. It is critical to monitor training metrics, like TSS scores and CTL, to gauge progress and adjust training stimuli effectively. Ultimately, this principle supports the notion that incorporating different intensities within a training regimen can yield comprehensive benefits and improve overall endurance performance.
OVERVIEW There's a misconception that mixing higher-intensity intervals and Zone 2 aerobic endurance riding in the same session is bad. The contention is that exposure to higher intensities hinders the stimulus that leads to improved fat oxidation. Coach Adam Pulford dispels this myth and explains how training zones work together and can be used in additive and complementary ways.
TOPICS COVERED
How training intensities complement each other rather than cancel each other
Aspects of fitness that can be improved at ALL INTENSITIES
The limitation of focusing too much on improving fat oxidation
How progressive overload works to gradually build fitness
HOST Adam Pulford has been a CTS Coach for nearly two decades and holds a B.S. in Exercise Physiology. He's participated in and coached hundreds of athletes for endurance events all around the world.