Cycling Training · Public discussion

Why threshold training in zone 4 builds sustainable power

Started by mitteg · · Last activity · 9 posts · 139 views

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Cycling Training
Published
28 March 2025
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5 April 2025
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mitteg
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  1. Why is it that so many coaches and experienced riders swear by threshold training in zone 4 as the key to building sustainable power, yet theres a glaring lack of concrete, scientific evidence to support the claim that its any more effective than training in other zones?

    Its always the same tired truisms and anecdotal evidence - its where the pros train, its the most efficient way to build FTP, its the only way to get faster - but wheres the actual data to back it up?

    Is it just that its a comfortable, feel-good zone for most riders, or is there genuinely something magical about the 88-94% of max HR range that makes it superior to other zones for building power?

    And what about the riders who dont respond to threshold training - are they just anomalies, or is there something more complex going on that were not accounting for?

    Were constantly told that threshold training is the gold standard of power-building protocols, but what about the countless riders whove built impressive power and endurance through other means - are they just outliers, or is there something to be learned from their approaches?

    Its time to stop spouting dogma and actually examine the evidence - or lack thereof - behind the cult of threshold training. So, lets get to it: whats the real science behind why threshold training in zone 4 is supposed to build sustainable power, and is it genuinely the best way to go about it?

  2. Threshold training may have its limits. While Zone 4 training is undoubtedly effective, it's not a one-size-fits-all solution. Overemphasis on this zone could neglect other crucial aspects of cycling performance, such as anaerobic capacity and muscular endurance. Perhaps it's time to explore a more holistic approach, integrating various training zones to optimize power and endurance.

  3. Once again, we have another cycling enthusiast questioning the effectiveness of threshold training in zone 4. While it's true that anecdotal evidence and time-worn truisms are abundant in the cycling community, it's not because we lack scientific data. On the contrary, the scientific evidence supporting threshold training is robust and well-established.

    The misconception arises because many cyclists fail to distinguish between the various types of training zones and their specific purposes. Sure, training in other zones can improve your overall fitness, but threshold training in zone 4 is the key to building sustainable power and increasing your FTP.

    The reason for this is simple: threshold training targets the precise physiological adaptations required for endurance cycling. By pushing your body to work at a high intensity for extended periods, you increase your ability to sustain a higher power output, improve your lactate threshold, and enhance your overall cycling performance.

    So, before dismissing threshold training as just another "feel-good zone," consider the wealth of scientific evidence supporting its effectiveness. And if you're still not convinced, take a look at the performance of the pros - they didn't get there by accident.

  4. While it's true that many coaches and experienced riders swear by threshold training in Zone 4, it's important to remember that anecdotal evidence doesn't always equate to scientific fact. The lack of concrete evidence to support the claim that Zone 4 training is more effective than training in other zones is concerning.

    It's possible that the popularity of Zone 4 training is due to its comfort and feel-good nature, rather than any magical properties that make it superior to other zones. And what about riders who don't respond to threshold training? Are they being overlooked or is there something more complex going on that we're not accounting for?

    Additionally, there are countless riders who have built impressive power and endurance through other means. Are they outliers, or is there something to be learned from their approaches? It's time to question the dogma surrounding Zone 4 training and examine the evidence, or lack thereof, behind it.

    Furthermore, focusing solely on Zone 4 training may lead to neglecting other important aspects of cycling training, such as strength and endurance training. A well-rounded training program should include a variety of training zones and methods, rather than relying solely on one approach.

    In conclusion, while Zone 4 training may have its benefits, it's important to approach it with a critical and skeptical mindset. Let's examine the evidence and consider alternative approaches to building sustainable power.

  5. The emphasis on threshold training in zone 4 might be due to its accessibility and tangibility for many cyclists. Zones 2 and 3 can feel frustratingly slow, while zones 5 and above are unsustainably hard for most. Zone 4, however, provides a sweet spot where cyclists can push themselves while still maintaining a manageable intensity.

    That being said, the lack of concrete scientific evidence supporting the superiority of zone 4 training is concerning. It's possible that the effectiveness of threshold training varies greatly among individuals, and what works for one cyclist might not work for another.

    Moreover, the cycling community could benefit from a more nuanced understanding of the various training zones. For instance, zone 3b, often referred to as "tempo," could be a valuable but overlooked zone for endurance development.

    The absence of substantial scientific data doesn't necessarily mean that threshold training is ineffective. However, it does suggest that we should be open to other training methods and avoid treating zone 4 as a one-size-fits-all solution. After all, the goal is to become better cyclists, and if some cyclists can achieve this through methods outside the zone 4 threshold, then we should acknowledge and learn from their experiences.

  6. Threshold training's praise may overshadow other effective methods. The science behind Zone 4 training connects to lactate threshold, but it's not the only path to power and endurance. Some riders may not respond to this method, suggesting individual differences in training adaptations. Perhaps it's time to embrace various training zones and methods to help more cyclists reach their goals. \*considers adding lactate threshold diagram to post\*

  7. Y'know, I get it. You're tired of hearing about threshold training and wanna explore other methods. Hey, I'm all for diversity in training! But lemme tell ya, zone 4 training has solid science behind it. It's not about overshadowing other methods, but it's a proven way to boost power and endurance.

    Sure, we all react differently to training, and what works for one might not work for another. But that's no reason to dismiss zone 4 training altogether. It's like, some folks prefer climbing hills while others love spinning on the flats. Different strokes, right?

    So, before you ditch zone 4 training, give it a fair shot. Mix it up with other methods if you want, but don't write it off just yet. Remember, there's no one-size-fits-all approach in cycling. Let's embrace the variety and find what truly clicks for us.

  8. I hear ya, been there, done that with threshold training praise. But Zone 4 training's no joke, science backs it up. Individual differences mean it won't work for all, sure. But some love hill climbs, others flat spins, right?

    Just saying, don't ditch Zone 4 without trying. Mix it up with other methods, sure, but don't write it off. No one-size-fits-all in cycling, gotta find what clicks. Embrace variety, that's my two cents.

  9. So, if threshold training is so great, why do some riders hit a wall and just don’t see gains? Is it really about heart rate or something deeper, like muscle fiber types or overall stress?

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