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Polarised vs Pyramidal Training, Which Suits Your Hours

By James Vickers and Lyra, WattPlan's AI research voice··6 min read

The WattPlan Podcast · Episode 19 · 9 min

Polarised or pyramidal, which suits your hours?

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James asks, Lyra answers from the studies. All episodes · RSS

Next episodes: Is Zone 2 worth the hours? · What are power zones actually for? · How do you plan a season so you peak on the day?

Read the transcript

James. Welcome to the WattPlan Podcast. I'm James. When I'm not juggling family, a day job, building WattPlan and chasing the occasional podium, I'm reading sports science I should have put down hours ago. Today, the argument that never dies. Polarised or pyramidal, which one actually suits the hours you've got? Lyra is our AI research voice, she's brought the studies, and they're all linked in the show notes.

Lyra. On average, it matters less than the arguing suggests. Both keep most of your riding easy. The difference is the hard slice. Polarised puts nearly all of it very hard and skips the middle, pyramidal spends more of it at tempo and sweet spot. When the trials are pooled, the two come out about level, and the one real hint in the data is about how fit you already are, not how many hours you ride.

James. So polarised is basically half easy, half flat out?

Lyra. No, and that's the most common mix-up. Researchers split intensity into three zones at the two lactate thresholds. Easy, a middle band of tempo and sweet spot, and hard, which is threshold and above. A polarised week is still about four fifths easy. The difference is that almost all of the remaining fifth sits in the hard zone, with very little in the middle. Pyramidal keeps the same big easy base, then more middle than hard.

James. Right. So where did the idea that polarised had won come from?

Lyra. Mostly one trial. Thomas Stöggl and Billy Sperlich, 2014, in Frontiers in Physiology. Forty-eight well-trained runners, cyclists, triathletes and cross-country skiers were split into four groups for nine weeks. The polarised group improved most, with VO2peak, the most oxygen they could use, up by about twelve percent. The threshold-heavy group and the high-volume easy group got no further gains in endurance performance. [3]

James. That's a pretty clear result. Why isn't that the end of it?

Lyra. Because it's one study with about a dozen people in each group, and people from four different sports. So researchers pooled the trials. A 2024 meta-analysis in Sports Medicine by Oliveira and colleagues gathered 17 studies. Polarised did lift VO2peak a little more than other splits. But that edge only showed up in studies shorter than twelve weeks and in highly trained people. [1]

James. And in an actual race?

Lyra. That's the bit that matters to you, and there was no real difference. Time trial performance came out about the same whichever way people trained. The authors' summary is that polarised improves aerobic power more, but not aerobic capacity. So it moved the lab number, not the stopwatch.

James. Then there's the 2025 one, which we touched on in the Zone 2 episode. What did we not say?

Lyra. Who was in it. The 2025 network meta-analysis in Sports Medicine by Rosenblat and colleagues went back to each participant's own data from 13 studies, 348 endurance athletes. Overall, no difference between polarised and pyramidal for VO2max or time trials. But when they split by level, competitive people tended to gain more VO2max from polarised, and recreational people more from pyramidal. [2]

James. Recreational being people like me.

Lyra. Probably, yes. And look at who else is missing. Only about one in seven of those people were women, and the average ages topped out in the early forties. So for women, and for riders in their fifties, the pooled data says very little either way.

James. But hang on. Everyone says the pros train polarised. If it's good enough for them, surely I should copy it?

Lyra. Counted by the clock, most of them don't. Measured by time in each zone, professional road cyclists mostly train in a pyramid, with huge amounts of easy riding, a real slice of moderate work and a little very hard, and racing adds the intensity on top. Even the polarised hint in the 2025 data was about VO2max, not race results. What you can copy from them is the easy base.

James. Okay. So the big easy base is agreed, and the fight is over whether the hard bit sits at sweet spot or at VO2max.

Lyra. Yes. And for most riders the real risk is neither model. It's easy rides drifting into the middle by accident, so the week goes pyramidal without anyone choosing it, and the hard sessions pay for it.

James. That's every group ride I've ever been on. It's billed as easy, and somehow the whole thing ends up at tempo.

Lyra. Which is exactly the week the polarised camp warns about. Their argument is that the middle is a black hole. Too hard to recover from properly, not hard enough to drive the biggest changes, so you end up a bit tired all the time and never fresh for the sessions that count. That's a reasoned argument rather than a measured result. But it fits Stöggl's threshold group, which stalled.

James. Then why didn't the middle lose in the pooled studies?

Lyra. Because in those trials the middle was planned. A pyramidal group was given its tempo and sweet spot on purpose, as part of a prescribed week. The grey zone that hurts riders is unplanned, the easy day that drifts up. So the evidence doesn't say avoid the middle. It says decide where the middle goes.

James. Where does WattPlan sit, then? I've never seen it call itself either.

Lyra. Somewhere in between, and it shifts by phase. Every week is mostly easy, with at most two hard days. In base they're sweet spot, which is a pyramid. In build and peak, threshold and VO2max join, never more than one VO2max session in a week.

James. And the article says polarised suits ten hours or more. Does WattPlan go more polarised if I ride more?

Lyra. Not by choosing a model, but your week does drift that way. Two hard days need four riding days and four hours. Below that, or as a beginner, you get one. Extra hours never add a third hard day. They go to easy riding, so the hard share of your week falls as your hours rise.

James. So someone just starting out shouldn't be worrying about any of this.

Lyra. Not at all. For anyone new to structured training, one sweet spot ride a week with easy riding around it is the whole plan, and the job is keeping the easy rides at conversation pace. If you use power or heart rate, check where the minutes actually went, not what the sessions were called. A long ride with every climb at tempo is a middle-zone ride. The 2025 analysis counted time in heart rate zones, so that's a fair way to judge your own week.

James. And if you're racing, and that competitive result is nagging at you?

Lyra. Then it's the one place the evidence leans, but gently, and on VO2max rather than results. WattPlan doesn't make the week more polarised for faster riders, so sweet spot and threshold stay in. A road race plan does bring VO2max into build and peak, never more than once a week.

James. What can't any of this tell us?

Lyra. A fair amount. The trials are short, nine weeks in Stöggl's case. The labels are slippery, because the same week can look polarised counted by sessions and pyramidal counted by minutes. And nobody has tested either model on a rider with six hours, a job and a family across a whole season. So we know the average difference is small, and that's about all.

James. Fine. Give me something to do this week.

Lyra. Two things. First, open this week in your plan and count the hard days. That's your hard slice, one or two. Second, ride everything else under the top of your Zone 2, climbs included. And if you want more, add time to your long ride, or another riding day to your schedule, rather than another hard session.

James. Count the hard days, leave them alone, and keep the rest properly easy. Hard to argue with, and I say that as someone who loves an argument.

Lyra. Pick either label and you'll be fine. Let your easy rides creep into the middle and neither model will save you.

Lyra. The full article and every study we mentioned are on the WattPlan blog, linked in the show notes. And if you've enjoyed this, follow the WattPlan Podcast wherever you're listening, so you don't miss the next one.

James. And if you want a plan built around the time you've actually got, get WattPlan on the App Store or Google Play. Thanks for listening.

Voices produced with ElevenLabs. James's voice is a clone of his own, Lyra is an AI voice, and James reviews every episode.

Polarised and pyramidal training both keep most of your riding easy. The difference is what you do with the rest. Polarised training puts almost all of it into very hard sessions and skips the middle, while pyramidal training spends more of it at tempo and sweet spot. Pooled trials find little difference between them on average, so the right choice depends mainly on your hours and your level.

Understanding Training Intensity Distribution

Training intensity distribution describes how your total training time is allocated across different zones. It answers a simple question. Of all the hours I train, how many are easy, moderate and hard?

Most research divides intensity into three broad zones.

This 3-zone model differs from the 7-zone power system. Here, "Zone 2" refers to moderate intensity (tempo and sweet spot), not the Zone 2 endurance zone used in power training.

The Polarised Model (80/20)

Polarised training concentrates work at the extremes, with lots of easy riding and some very hard efforts and minimal time in the moderate middle.

Typical distribution.

The polarised philosophy argues that moderate intensity is a "black hole", too hard to allow full recovery, yet not hard enough to drive maximum adaptation. By avoiding this middle zone, you arrive at hard sessions fresher and can push harder when it matters.

Research support. Descriptive studies of elite endurance sport find that nearly all training is easy, but whether the rest is polarised or pyramidal varies by sport and season, and pyramidal is at least as common among the best.

Advantages of polarised training.

Limitations.

The Pyramidal Model

Pyramidal training distributes more time in the moderate zone, creating a pyramid shape when graphing time by intensity.

Typical distribution.

The pyramid maintains a large aerobic base while including meaningful tempo and sweet spot work. Hard sessions above threshold are less frequent than in polarised approaches.

Rationale. Tempo and sweet spot training provide substantial training stimulus with manageable fatigue. For time-limited riders, this moderate work accumulates more training stress per hour than pure easy riding.

Advantages of pyramidal training.

Limitations.

What Does the Research Say?

A landmark 2014 study by Stöggl and Sperlich compared different intensity distributions in well-trained endurance competitors. The key findings were these.

  1. Polarised training produced the greatest improvements in VO2max, time to exhaustion, and peak power.
  1. High-intensity interval training was next, improving power at a fixed lactate level.
  1. High-volume easy training and threshold-focused training (heavy sweet spot/tempo) produced no measurable further gains.

However, context matters.

Pooled evidence since then is more cautious. A 2024 meta-analysis of 17 studies found polarised training raised VO2peak slightly more than other splits but made no difference to time-trial performance, and a 2025 analysis of individual data from 13 studies found no overall difference between polarised and pyramidal, with a hint that competitive riders gain more from polarised and recreational riders from pyramidal. The best split may also depend on training phase, event type and individual response.

Which Model is Right for You?

Choose Polarised If

Choose Pyramidal If

For Most Amateur Cyclists

A hybrid approach often works best.

Practical Implementation

Polarised Week Example (12 hours total)

Hard work ~15%, moderate ~5%, easy ~80%.

Pyramidal Week Example (8 hours total)

Hard work ~10%, moderate ~20%, easy ~70%.

Combining Approaches

Most successful riders don't rigidly follow one model. Instead, they periodise their intensity distribution.

Off-season. Lower overall intensity, focus on recovery and aerobic base. Very easy riding dominates.

Base phase. Pyramidal approach, incorporating sweet spot and tempo to build general fitness.

Build phase. Shift toward polarised, reducing moderate work and adding high-intensity intervals.

Race phase. Strongly polarised, with very easy recovery between hard race-specific efforts.

See our periodisation guide for detailed phase planning.

Frequently Asked Questions

What about sweet spot training? Is it "forbidden" in polarised?

Not forbidden, but minimised. Some coaches incorporate limited sweet spot work even in polarised plans. The key is ensuring it doesn't dominate your training or leave you too fatigued for hard sessions.

How do I know if I'm training too much in the middle zone?

The usual signs are consistently feeling moderately tired (never fresh, never destroyed), a plateau in fitness markers, and hard sessions that always feel hard to complete.

Can beginners use polarised training?

Technically yes, but beginners often lack the training base for truly hard sessions. A modified pyramidal approach with some tempo work may be more appropriate until base fitness develops.

Do professional cyclists really train polarised?

Measured by time in each zone, most professional road cyclists train in a pyramidal pattern, with a huge volume of easy riding, a meaningful slice of moderate work and a small amount of very hard work. However, racing itself adds significant high-intensity work.

The best training distribution is the one that fits your life, allows consistent training, and produces results. Start with general guidelines, then adjust based on how you respond.

Sources

Continue Reading

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