Do running power meters produce meaningful numbers?

Picture of a runner looking at their mobile and running watch

๐ƒ๐จ ๐ซ๐ฎ๐ง๐ง๐ข๐ง๐  ๐ฉ๐จ๐ฐ๐ž๐ซ ๐ฆ๐ž๐ญ๐ž๐ซ๐ฌ ๐ฉ๐ซ๐จ๐๐ฎ๐œ๐ž ๐ฆ๐ž๐š๐ง๐ข๐ง๐ ๐Ÿ๐ฎ๐ฅ ๐ง๐ฎ๐ฆ๐›๐ž๐ซ๐ฌ?

Running power meters provide numbers showing how hard youโ€™re working when you run โ€“ your effort.

๐€๐ซ๐ž ๐ญ๐ก๐ž๐ฒ ๐ซ๐ž๐š๐ฅ๐ฅ๐ฒ ๐ฆ๐ž๐š๐ฌ๐ฎ๐ซ๐ข๐ง๐  ๐ฒ๐จ๐ฎ๐ซ ๐ž๐Ÿ๐Ÿ๐จ๐ซ๐ญ?

No.

Running power meters provide numbers that ๐‘Ÿ๐‘’๐‘๐‘Ÿ๐‘’๐‘ ๐‘’๐‘›๐‘ก your effort.

๐ƒ๐จ๐ž๐ฌ ๐ญ๐ก๐š๐ญ ๐ฆ๐ž๐š๐ง ๐ซ๐ฎ๐ง๐ง๐ข๐ง๐  ๐ฉ๐จ๐ฐ๐ž๐ซ ๐ฆ๐ž๐ญ๐ž๐ซ๐ฌ ๐š๐ซ๐ž ๐ฉ๐จ๐ข๐ง๐ญ๐ฅ๐ž๐ฌ๐ฌ?

No.

Running power meters provide usable information … as long as the power numbers are repeatable and valid:
๐Ÿ”น Repeatable? The same effort under the same conditions gives the same result.
๐Ÿ”น Valid? The numbers are highly correlated to an existing โ€˜gold standardโ€™.

At least 10 independent studies have tested the Stryd footpod, finding that the footpod produces repeatable numbers that are highly correlated with oxygen consumption (a gold standard for measuring exercise energy consumption).

Wrist-based power has not been independently validated. However, I ran my own (N=1) study during 2024 and 2025, comparing wrist-based power from Garmin, Coros and Apple to power numbers from a Stryd footpod. I found they produce repeatable numbers that, for recreational runners, are correlated to the Stryd footpod (which in turn is highly correlated to oxygen consumption).

๐’๐จ ๐ซ๐ฎ๐ง๐ง๐ข๐ง๐  ๐ฉ๐จ๐ฐ๐ž๐ซ ๐ฆ๐ž๐ญ๐ž๐ซ๐ฌ ๐š๐ซ๐ž๐งโ€™๐ญ ๐ฉ๐จ๐ข๐ง๐ญ๐ฅ๐ž๐ฌ๐ฌ?

Far from it.

You can use running power numbers to measure your effort when you run.

And once you can measure your effort, thatโ€™s when the magic begins.

๐‘บ๐’‰๐’๐’–๐’๐’…๐’’๐’• ๐’š๐’๐’– ๐’ƒ๐’† ๐‘น๐’–๐’๐’๐’Š๐’๐’ˆ ๐’˜๐’Š๐’•๐’‰ ๐‘ท๐’๐’˜๐’†๐’“?

โ“ Questions?
๐Ÿ“– Getting Started

For more information on independent testing of the Stryd footpod, see Steve Palladino’s article Stryd Power and VO2
For more information on my N=1 study into wrist-based power, see Running with Power โ€“ 2G+AW+COROS

๐“๐จ๐ฉ๐ข๐œ: ๐๐จ๐ฐ๐ž๐ซ ๐Œ๐ž๐ญ๐ž๐ซ๐ฌ
โฉ What is a power meter?
โฉ Do running power meters provide meaningful numbers?
โฉ Can you use a Stryd footpod to Run with Power?
โฉ Can you use a running watch to Run with Power?
โฉ What else do you need (apart from a power meter and watch)?

What is a Power Meter?

Picture of a runner looking at their mobile and running watch

๐–๐ก๐š๐ญ ๐ข๐ฌ ๐š ๐๐จ๐ฐ๐ž๐ซ ๐Œ๐ž๐ญ๐ž๐ซ?

A Power Meter provides numbers representing how hard youโ€™re working โ€“ your effort or running intensity.

Running power meters use readings from multiple sensors to calculate a power number.

Most recent running watches have a power meter built in.

๐–๐ก๐ฒ ๐ฎ๐ฌ๐ž ๐š ๐ฉ๐จ๐ฐ๐ž๐ซ ๐ฆ๐ž๐ญ๐ž๐ซ?

Running intensity is important when training, so that you can target the adaptations that will give you the best chance of success at your upcoming event.

There are other measures of intensity runners can use, but running power overcomes some of the disadvantages of those other measures:

๐Ÿ”น Itโ€™s objective, rather than subjective, providing a number that represents your effort โ€“ unlike perceived effort.

๐Ÿ”น It matches changes in your effort, even when running hilly routes โ€“ unlike pace.

๐Ÿ”น Changes in effort produce an immediate change in power and thereโ€™s no upward drifting towards the end of longer runs โ€“ unlike heart rate.

๐ƒ๐จ ๐ซ๐ฎ๐ง๐ง๐ข๐ง๐  ๐ฉ๐จ๐ฐ๐ž๐ซ ๐ฆ๐ž๐ญ๐ž๐ซ๐ฌ ๐ซ๐ž๐š๐ฅ๐ฅ๐ฒ ๐ฆ๐ž๐š๐ฌ๐ฎ๐ซ๐ž ๐ฆ๐ฒ ๐ž๐Ÿ๐Ÿ๐จ๐ซ๐ญ?

No.

Running power meters provide numbers that ๐‘Ÿ๐‘’๐‘๐‘Ÿ๐‘’๐‘ ๐‘’๐‘›๐‘ก your effort.

๐ƒ๐จ๐ž๐ฌ ๐ญ๐ก๐š๐ญ ๐ฆ๐ž๐š๐ง ๐ซ๐ฎ๐ง๐ง๐ข๐ง๐  ๐ฉ๐จ๐ฐ๐ž๐ซ ๐ข๐ฌ ๐ฆ๐ž๐š๐ง๐ข๐ง๐ ๐ฅ๐ž๐ฌ๐ฌ?

No, as long as the numbers are repeatable and valid (more on that in the next post), you can use them to measure your effort.

And once you can measure your effort, thatโ€™s when the magic begins.

๐‘บ๐’‰๐’๐’–๐’๐’…๐’’๐’• ๐’š๐’๐’– ๐’ƒ๐’† ๐‘น๐’–๐’๐’๐’Š๐’๐’ˆ ๐’˜๐’Š๐’•๐’‰ ๐‘ท๐’๐’˜๐’†๐’“?

โ“ Questions?
๐Ÿ“– Getting Started

๐“๐จ๐ฉ๐ข๐œ: ๐๐จ๐ฐ๐ž๐ซ ๐Œ๐ž๐ญ๐ž๐ซ๐ฌ
โฉ What is a power meter?
โฉ Do running power meters provide meaningful numbers?
โฉ Can you use a Stryd footpod to Run with Power?
โฉ Can you use a running watch to Run with Power?
โฉ What else do you need (apart from a power meter and watch)?

Running Effectiveness and race planning

An athlete using drills to improve their form

๐‘๐ฎ๐ง๐ง๐ข๐ง๐  ๐„๐Ÿ๐Ÿ๐ž๐œ๐ญ๐ข๐ฏ๐ž๐ง๐ž๐ฌ๐ฌ ๐š๐ง๐ ๐ซ๐š๐œ๐ž ๐ฉ๐ฅ๐š๐ง๐ง๐ข๐ง๐ 

There are three primary uses for Running Effectiveness:
โœ… To improve your form
โœ… To improve your fatigue resistance
โœ… To identify targets for your upcoming race

Running Effectiveness can help identify the optimum power target for your upcoming event.

๐‘๐š๐œ๐ž ๐‚๐š๐ฅ๐œ๐ฎ๐ฅ๐š๐ญ๐จ๐ซ๐ฌ

Depending on your choice of power meter and supporting apps, there are two different race calculators you can use to identify your optimum power target:
๐ŸŽฏ If you use a Stryd footpod and the Stryd ecosystem, you can use the web-based Stryd Race Calculator
๐ŸŽฏIf you use wrist-based power, you can use the โ€˜Generate Race Power Scenariosโ€™ feature in SuperPower Calculator (for Google Sheets).

๐‡๐จ๐ฐ ๐๐จ ๐ญ๐ก๐ž๐ฒ ๐ฐ๐จ๐ซ๐ค?

Whichever calculator you use, they work similarly, using (at a minimum):
๐Ÿ”น Your race-day running fitness โ€“ your Threshold Power on race-day
๐Ÿ”น Your fatigue resistance โ€“ one of two different metrics, depending on whether youโ€™re running a shorter, higher-intensity race or a longer, lower-intensity race
๐Ÿ”น Your running effectiveness โ€“ your estimated finish time depends on how effectively you convert power into speed

These metrics are calculated from your completed workouts.

Which means that your training plan should include specific workout segments supporting the race-day calculations.

And it means that Running with Power personalises your race-day target, based on your capabilities, instead of calculating your target using averages from thousands of other runners (who are not you).

๐‘บ๐’‰๐’๐’–๐’๐’…๐’’๐’• ๐’š๐’๐’– ๐’ƒ๐’† ๐‘น๐’–๐’๐’๐’Š๐’๐’ˆ ๐’˜๐’Š๐’•๐’‰ ๐‘ท๐’๐’˜๐’†๐’“?

โ“ Questions?
๐Ÿ“– Getting Started

For more information on how to use Running Effectiveness, see Understanding ‘Running Effectiveness’ and its uses (Palladino)
More about the Race Calculators can be found at:
๐Ÿ”น Stryd: Race Calculator in PowerCenter
๐Ÿ”น SuperPower Calculator for Sheets (click to download a copy)

๐“๐จ๐ฉ๐ข๐œ: ๐‘๐ฎ๐ง๐ง๐ข๐ง๐  ๐„๐Ÿ๐Ÿ๐ž๐œ๐ญ๐ข๐ฏ๐ž๐ง๐ž๐ฌ๐ฌ
โฉ What is Running Effectiveness?
โฉ Is Running Effectiveness easy to use?
โฉ Running Effectiveness and form improvements
โฉ Running Effectiveness and fatigue resistance
โฉ Running Effectiveness and race planning

Running Effectiveness and fatigue resistance

An athlete using drills to improve their form

๐‘๐ฎ๐ง๐ง๐ข๐ง๐  ๐„๐Ÿ๐Ÿ๐ž๐œ๐ญ๐ข๐ฏ๐ž๐ง๐ž๐ฌ๐ฌ ๐š๐ง๐ ๐Ÿ๐š๐ญ๐ข๐ ๐ฎ๐ž ๐ซ๐ž๐ฌ๐ข๐ฌ๐ญ๐š๐ง๐œ๐ž

You may be familiar with the term stamina, which is similar to, but not the same as fatigue resistance:
โœ… Stamina โ€“ your ability to sustain effort for a longer duration
โœ… Fatigue Resistance โ€“ your body’s ability to resist the effects of fatigue

This post focuses on fatigue resistance, starting with a simple question.

๐–๐ก๐š๐ญ ๐ก๐š๐ฉ๐ฉ๐ž๐ง๐ฌ ๐ฐ๐ก๐ž๐ง ๐ฒ๐จ๐ฎ ๐Ÿ๐š๐ญ๐ข๐ ๐ฎ๐ž?

When you fatigue (while running):
๐Ÿ”น youโ€™ll probably slow down
๐Ÿ”น your gait or form may change
๐Ÿ”น you may experience mental sluggishness
๐Ÿ”น you may have an increased risk of injury

๐‡๐จ๐ฐ ๐œ๐š๐ง ๐ฒ๐จ๐ฎ ๐ฆ๐ž๐š๐ฌ๐ฎ๐ซ๐ž ๐ฒ๐จ๐ฎ๐ซ ๐Ÿ๐š๐ญ๐ข๐ ๐ฎ๐ž ๐ซ๐ž๐ฌ๐ข๐ฌ๐ญ๐š๐ง๐œ๐ž?

According to Steve Palladino, you could focus on metrics that measure gait or form, looking for changes in those metrics over the course of a run.

There are a few metrics heโ€™s investigated. One of them is available with any kind of power meter – Running Effectiveness.

In a FaceBook post, Steve outlines a couple of ways to measure fatigue resistance using higher-intensity sections in long runs.

๐‡๐จ๐ฐ ๐œ๐š๐ง ๐ฒ๐จ๐ฎ ๐ข๐ฆ๐ฉ๐ซ๐จ๐ฏ๐ž ๐ฒ๐จ๐ฎ๐ซ ๐Ÿ๐š๐ญ๐ข๐ ๐ฎ๐ž ๐ซ๐ž๐ฌ๐ข๐ฌ๐ญ๐š๐ง๐œ๐ž?

Itโ€™s one thing to be able to measure fatigue resistance, but how can you improve it?

Through a well-structured training plan.

And to check that your fatigue resistance is improving, you could use reference runs.

RE provides an objective way to assess improvements in fatigue resistance.

๐‘บ๐’‰๐’๐’–๐’๐’…๐’’๐’• ๐’š๐’๐’– ๐’ƒ๐’† ๐‘น๐’–๐’๐’๐’Š๐’๐’ˆ ๐’˜๐’Š๐’•๐’‰ ๐‘ท๐’๐’˜๐’†๐’“?

โ“ Questions?
๐Ÿ“– Getting Started

For more information on how to use Running Effectiveness, see Understanding ‘Running Effectiveness’ and its uses (Palladino)

๐“๐จ๐ฉ๐ข๐œ: ๐‘๐ฎ๐ง๐ง๐ข๐ง๐  ๐„๐Ÿ๐Ÿ๐ž๐œ๐ญ๐ข๐ฏ๐ž๐ง๐ž๐ฌ๐ฌ
โฉ What is Running Effectiveness?
โฉ Is Running Effectiveness easy to use?
โฉ Running Effectiveness and form improvements
โฉ Running Effectiveness and fatigue resistance
โฉ Running Effectiveness and race planning

Running Effectiveness and form improvements

An athlete using drills to improve their form

๐‘๐ฎ๐ง๐ง๐ข๐ง๐  ๐„๐Ÿ๐Ÿ๐ž๐œ๐ญ๐ข๐ฏ๐ž๐ง๐ž๐ฌ๐ฌ ๐š๐ง๐ ๐Ÿ๐จ๐ซ๐ฆ ๐ข๐ฆ๐ฉ๐ซ๐จ๐ฏ๐ž๐ฆ๐ž๐ง๐ญ๐ฌ

Your running form is not the same as your running gait:
โœ… gait is the โ€˜whatโ€™ – the movement sequence like heel-striking or lifting your foot
โœ… form is the โ€˜howโ€™ – whether your movements are efficient, stable, and injury-free

By working on your form (how you run), you can improve your running effectiveness.

But itโ€™s not a straightforward thing, and itโ€™s easy to make things worse rather than better.

๐‡๐จ๐ฐ ๐œ๐š๐ง ๐ฒ๐จ๐ฎ ๐ฐ๐จ๐ซ๐ค ๐จ๐ง ๐ฒ๐จ๐ฎ๐ซ ๐Ÿ๐จ๐ซ๐ฆ?

Before starting any form work, consult a sports physiotherapist. They should be able to assess your current form and help you identify whether there are things you should prioritise to reduce injury risk.

A second option is to work with a specialist running coach, someone who has the training and tools to assess your running form and identify things you could do to improve your form.

Both the physio and the running coach will probably suggest activities to add to your training plan โ€“ strength and conditioning, running drills, plyometrics, and other supplemental activities.

๐”๐ฌ๐ž ๐‘๐„ ๐ญ๐จ ๐ฌ๐ž๐ž ๐ข๐Ÿ ๐ฒ๐จ๐ฎ๐ซ ๐Ÿ๐จ๐ซ๐ฆ ๐œ๐ก๐š๐ง๐ ๐ž๐ฌ ๐š๐ซ๐ž ๐ข๐ฆ๐ฉ๐ซ๐จ๐ฏ๐ž๐ฆ๐ž๐ง๐ญ๐ฌ

Before starting any supplemental activities, complete a reference run or two.

This will provide baseline RE measurements.

Then, while working on your form, complete additional reference runs to track whether the activities are improving your form (and you should continue them), or whether you should try something different.

RE provides an objective way to assess whether form changes are improvements.

๐‘บ๐’‰๐’๐’–๐’๐’…๐’’๐’• ๐’š๐’๐’– ๐’ƒ๐’† ๐‘น๐’–๐’๐’๐’Š๐’๐’ˆ ๐’˜๐’Š๐’•๐’‰ ๐‘ท๐’๐’˜๐’†๐’“?

โ“ Questions?
๐Ÿ“– Getting Started

For more information on how to use Running Effectiveness, see Understanding ‘Running Effectiveness’ and its uses (Palladino)

๐“๐จ๐ฉ๐ข๐œ: ๐‘๐ฎ๐ง๐ง๐ข๐ง๐  ๐„๐Ÿ๐Ÿ๐ž๐œ๐ญ๐ข๐ฏ๐ž๐ง๐ž๐ฌ๐ฌ
โฉ What is Running Effectiveness?
โฉ Is Running Effectiveness easy to use?
โฉ Running Effectiveness and form improvements
โฉ Running Effectiveness and fatigue resistance
โฉ Running Effectiveness and race planning

Is Running Effectiveness easy to use?

An athlete using drills to improve their form

๐ˆ๐ฌ ๐‘๐ฎ๐ง๐ง๐ข๐ง๐  ๐„๐Ÿ๐Ÿ๐ž๐œ๐ญ๐ข๐ฏ๐ž๐ง๐ž๐ฌ๐ฌ ๐ž๐š๐ฌ๐ฒ ๐ญ๐จ ๐ฎ๐ฌ๐ž?

Running Effectiveness uses speed and power (effort) – both are measurable numbers. RE is easy to calculate.

But Running Effectiveness measures how effectively you convert power into speed, and there are many things that can affect that conversion.

๐‘๐ฎ๐ง๐ง๐ข๐ง๐  ๐ข๐ง๐ญ๐ž๐ง๐ฌ๐ข๐ญ๐ฒ

Differences in your running form at different intensities (jogging vs. running vs. sprinting) will affect how effectively you convert power into forward motion, impacting RE.

๐‡๐ข๐ฅ๐ฅ๐ฌ & ๐–๐ข๐ง๐

When you run uphill, your power will be higher for the same speed โ€“ and your RE will be lower. The reverse is true when running downhill.

The same is true for running into a headwind (lower RE), or with a tailwind.

๐‘๐ฎ๐ง๐ง๐ข๐ง๐  ๐ฌ๐ก๐จ๐ž๐ฌ

Running shoes are made from differing materials with differing stack heights. This can affect how effectively you convert power to speed.

๐˜๐จ๐ฎ๐ซ ๐ฉ๐จ๐ฐ๐ž๐ซ ๐ฆ๐ž๐ญ๐ž๐ซ & ๐œ๐จ๐ง๐Ÿ๐ข๐ ๐ฎ๐ซ๐ž๐ ๐ฐ๐ž๐ข๐ ๐ก๐ญ

There is no agreed standard for calculating running power โ€“ different power meters will produce differing numbers. This means RE (for identical runs) will differ based on the power meter you used.

RE uses power divided by weight. If you change the weight configured for your power meter, RE calculations made before that change will not be comparable with RE calculations made after that change, unless you calculate RE using the weight configured at the time of each run.

๐‘๐ž๐Ÿ๐ž๐ซ๐ž๐ง๐œ๐ž ๐ซ๐ฎ๐ง๐ฌ

RE isnโ€™t so easy to use!

But one way to monitor changes in RE is to use reference runs, a strategy that Fred Richardson (a fellow coach) shared with me.

These are runs you include every 3-4 weeks in your training plan, where you run the same route at the same target intensities in the same running shoes. Reference runs minimise the variations between runs, so that you can compare RE between runs and spot improvements.

๐‘บ๐’‰๐’๐’–๐’๐’…๐’’๐’• ๐’š๐’๐’– ๐’ƒ๐’† ๐‘น๐’–๐’๐’๐’Š๐’๐’ˆ ๐’˜๐’Š๐’•๐’‰ ๐‘ท๐’๐’˜๐’†๐’“?

โ“ Questions?
๐Ÿ“– Getting Started

For more information on how to use Running Effectiveness, see Understanding ‘Running Effectiveness’ and its uses (Palladino)

๐“๐จ๐ฉ๐ข๐œ: ๐‘๐ฎ๐ง๐ง๐ข๐ง๐  ๐„๐Ÿ๐Ÿ๐ž๐œ๐ญ๐ข๐ฏ๐ž๐ง๐ž๐ฌ๐ฌ
โฉ What is Running Effectiveness?
โฉ Is Running Effectiveness easy to use?
โฉ Running Effectiveness and form improvements
โฉ Running Effectiveness and fatigue resistance
โฉ Running Effectiveness and race planning

What is Running Effectiveness?

An athlete using drills to improve their form

๐–๐ก๐š๐ญ ๐ข๐ฌ ๐‘๐ฎ๐ง๐ง๐ข๐ง๐  ๐„๐Ÿ๐Ÿ๐ž๐œ๐ญ๐ข๐ฏ๐ž๐ง๐ž๐ฌ๐ฌ?

Imagine you want to run a faster marathon or a faster 5k.

You have a couple of choices.

๐ˆ๐ฆ๐ฉ๐ซ๐จ๐ฏ๐ž ๐ฒ๐จ๐ฎ๐ซ ๐Ÿ๐ข๐ญ๐ง๐ž๐ฌ๐ฌ

If you’re fitter, you should be able to maintain a higher effort over the event distance.

A higher effort should mean a faster speed, resulting in a quicker finish time.

You can improve your fitness by training, and you can measure fitness improvements by tracking your threshold power.

๐ˆ๐ฆ๐ฉ๐ซ๐จ๐ฏ๐ž ๐ฒ๐จ๐ฎ๐ซ ๐ž๐Ÿ๐Ÿ๐ž๐œ๐ญ๐ข๐ฏ๐ž๐ง๐ž๐ฌ๐ฌ

Rather than improving your fitness, you could work on how you run.

If you’re more effective at converting your effort (power) into forward motion (speed), you can run faster for the same effort, resulting in a quicker finish time.

You can work on how you run (your running form) using drills, plyometrics, strength and conditioning, and other supplemental work.

But how can you measure whether that work has improved your running form?

๐‘๐ฎ๐ง๐ง๐ข๐ง๐  ๐„๐Ÿ๐Ÿ๐ž๐œ๐ญ๐ข๐ฏ๐ž๐ง๐ž๐ฌ๐ฌ

Running Effectiveness (RE) was proposed by Andrew Coggan, PhD, and measures how effectively you convert power into speed.

Itโ€™s a field-based measure similar to, but different from Running Economy (oxygen consumption at various speeds) or Running Efficiency (external mechanical power vs. metabolic power production), which both require lab-based testing.

RE = speed / power, where speed is in metres per second and power is in Watts per kilogram.

For an easy way to calculate RE from your power meter data, you can use SuperPower Calculator, as demonstrated by Steve Palladino in this video.

๐‘บ๐’‰๐’๐’–๐’๐’…๐’’๐’• ๐’š๐’๐’– ๐’ƒ๐’† ๐‘น๐’–๐’๐’๐’Š๐’๐’ˆ ๐’˜๐’Š๐’•๐’‰ ๐‘ท๐’๐’˜๐’†๐’“?

โ“ Questions?
๐Ÿ“– Getting Started

For more information on:
๐Ÿ”น The definition of Running Effectiveness, see WKO4: New Metrics for Running With Power (Coggan)
๐Ÿ”น How to use Running Effectiveness, see Understanding ‘Running Effectiveness’ and its uses (Palladino)

๐“๐จ๐ฉ๐ข๐œ: ๐‘๐ฎ๐ง๐ง๐ข๐ง๐  ๐„๐Ÿ๐Ÿ๐ž๐œ๐ญ๐ข๐ฏ๐ž๐ง๐ž๐ฌ๐ฌ
โฉ What is Running Effectiveness?
โฉ Is Running Effectiveness easy to use?
โฉ Running Effectiveness and form improvements
โฉ Running Effectiveness and fatigue resistance
โฉ Running Effectiveness and race planning

Race-specific training

A runner recovering after adding training load
A runner recovering after adding training load

๐‘๐š๐œ๐ž-๐’๐ฉ๐ž๐œ๐ข๐Ÿ๐ข๐œ ๐“๐ซ๐š๐ข๐ง๐ข๐ง๐ 

Training Load Balance, based on your Training Load Scores, includes both intensity and duration but it doesn’t provide any insight into the distribution of running intensities in your training.

A longer run at a lower intensity can produce the same Training Load Score as a shorter run at a higher intensity.

Yet intensity is important, as the adaptations from higher intensities may be quite different than those from lower intensities.

And you may want to match those adaptations to your goal race โ€“ training for a marathon may have a different mix of intensities than training for a 5k.

๐“๐ซ๐š๐ข๐ง๐ข๐ง๐  ๐ˆ๐ง๐ญ๐ž๐ง๐ฌ๐ข๐ญ๐ฒ ๐ƒ๐ข๐ฌ๐ญ๐ซ๐ข๐›๐ฎ๐ญ๐ข๐จ๐ง (๐“๐ˆ๐ƒ)

A TID chart groups your time spent at each intensity into 3 or more groups, then displays the result as a stacked bar chart, with each stacked bar representing a week of training.

When Running with Power, the groups are typically ranges based on percentages of your Threshold Power. This ensures that when your Threshold Power changes, your adjusted intensities are still relative to what you’re capable of (and it means you donโ€™t need to adjust the chart).

You can produce the chart for completed workouts to check the mix that you ran. Or you can produce the chart for planned workouts, to adjust the mix youโ€™re planning to run, using planned Training Load Scores).

The TID chart is the third key metric for monitoring your training (along with Training Load Balance and Ramp Rate).

๐‘บ๐’‰๐’๐’–๐’๐’…๐’’๐’• ๐’š๐’๐’– ๐’ƒ๐’† ๐‘น๐’–๐’๐’๐’Š๐’๐’ˆ ๐’˜๐’Š๐’•๐’‰ ๐‘ท๐’๐’˜๐’†๐’“?

โ“ Questions?
๐Ÿ“– Getting Started

๐“๐จ๐ฉ๐ข๐œ: ๐“๐ซ๐š๐ข๐ง๐ข๐ง๐  ๐‹๐จ๐š๐
โฉ What is Training Load?
โฉ Training Load – a two-sided coin!
โฉ Achieving a Training Load Balance
โฉ The danger of ramping up too quickly
โฉ Race-specific training

The danger of ramping up too quickly

A runner recovering after adding training load
A runner recovering after adding training load

๐“๐ก๐ž ๐๐š๐ง๐ ๐ž๐ซ ๐จ๐Ÿ ๐ซ๐š๐ฆ๐ฉ๐ข๐ง๐  ๐ฎ๐ฉ ๐ญ๐จ๐จ ๐ช๐ฎ๐ข๐œ๐ค๐ฅ๐ฒ

Training loads your body, encouraging it to adapt.

But it’s a balance. Load the body too little, and it will not adapt; load it too much or too quickly, and it will break down instead of adapting; load your body correctly, and sustained long-term improvements are possible.

And the training loads are cumulative โ€“ as you continue to train, you continue to encourage adaptations.

Your training load is the sum of these cumulative stresses. Monitoring your training load helps ensure your training is productive, and that you minimise injury risk.

๐“๐ซ๐š๐ข๐ง๐ข๐ง๐  ๐‹๐จ๐š๐ ๐ฆ๐ž๐ญ๐ซ๐ข๐œ๐ฌ

Your Training Load Balance indicates whether your training is productive, with a negative (but not too negative) score indicating productive training.

Your Ramp Rate shows if you may be adding training load too quickly, replacing โ€˜the 10% ruleโ€™ with a metric based on your training volume and intensity.

๐‘๐š๐ฆ๐ฉ ๐‘๐š๐ญ๐ž

Ramp Rate is the week-on-week difference in your Chronic Training Load (CTL) or your 42-day weighted average, depending on which set of metrics youโ€™re using.

Why week-on-week? Because Long Runs will tend to impact your training load more than shorter interval sessions or easy/recovery runs.

Using a week-on-week calculation will ‘smooth out’ any fluctuations caused by your workout mix while still producing a useful metric.

๐–๐ก๐š๐ญ’๐ฌ ๐š ๐ ๐จ๐จ๐ ๐‘๐š๐ฆ๐ฉ ๐‘๐š๐ญ๐ž ๐ญ๐š๐ซ๐ ๐ž๐ญ?

It depends.

Runners that have been running for more years and that are less injury-prone may be able to cope with a ramp rate of 2 – 3 or higher.

New runners or those that are more injury-prone might find a ramp rate of 0.5 – 2 safer and more sustainable.

๐‘บ๐’‰๐’๐’–๐’๐’…๐’’๐’• ๐’š๐’๐’– ๐’ƒ๐’† ๐‘น๐’–๐’๐’๐’Š๐’๐’ˆ ๐’˜๐’Š๐’•๐’‰ ๐‘ท๐’๐’˜๐’†๐’“?

โ“ Questions?
๐Ÿ“– Getting Started

For more about Ramp Rate, see CTL Ramp Rate for Runners in the Facebook group Palladino Power Project.

๐“๐จ๐ฉ๐ข๐œ: ๐“๐ซ๐š๐ข๐ง๐ข๐ง๐  ๐‹๐จ๐š๐
โฉ What is Training Load?
โฉ Training Load – a two-sided coin!
โฉ Achieving a Training Load Balance
โฉ The danger of ramping up too quickly
โฉ Race-specific training

Achieving a Training Load Balance

A runner recovering after adding training load
A runner recovering after adding training load

๐€๐œ๐ก๐ข๐ž๐ฏ๐ข๐ง๐  ๐š ๐“๐ซ๐š๐ข๐ง๐ข๐ง๐  ๐‹๐จ๐š๐ ๐๐š๐ฅ๐š๐ง๐œ๐ž

Training Load Scores, calculated for each workout, represent each workoutโ€™s metabolic stress.

You can use these scores to model the shorter-term and longer-term impacts from each workout.

Combining these, you can obtain a Training Load Balance (TLB), indicating whether your training is โ€˜productiveโ€™.

Training Load Balance at also known as Training Stress Balance (TSB) or Running Stress Balance (RSB) but the word โ€˜Stressโ€™ may be confusing, implying mental stress rather than physical or metabolic stress. Load (rather than Stress) helps remove potential confusion, and is the term used by Steve Palladino in his article library.

Training Load Balance is also known as ‘form’ in heartrate-based models.

๐๐ซ๐จ๐๐ฎ๐œ๐ญ๐ข๐ฏ๐ž ๐“๐ซ๐š๐ข๐ง๐ข๐ง๐ 

How does your TLB help ensure your training is productive?

Your TLB is the difference between the longer-term impacts and the shorter-term impacts (TLB = CTL – ATL):
๐Ÿ”น A very positive balance indicates detraining or a lack of any meaningful training.
๐Ÿ”น A positive balance may indicate tapering or a missed workout.
๐Ÿ”น A negative balance indicates productive training โ€“ enough load to encourage adaptations, but not so much that there is a greater risk of injury or over-training.
๐Ÿ”น A very negative balance may indicate over-training, with a greater risk of injury.

๐‡๐จ๐ฐ ๐š๐œ๐œ๐ฎ๐ซ๐š๐ญ๐ž ๐ข๐ฌ ๐ฒ๐จ๐ฎ๐ซ ๐“๐ซ๐š๐ข๐ง๐ข๐ง๐  ๐‹๐จ๐š๐ ๐๐š๐ฅ๐š๐ง๐œ๐ž?

You can use your TLB to monitor your training, but be aware that:
๐Ÿ”น You need 80+ days of workout data for your TLB to be accurate (because of the way the model works)
๐Ÿ”น You should track your scores and compare them to how you actually feel to build your experience of what your TLB represents (for you)

Your Training Load Balance is a useful and straightforward way to monitor whether your training is productive.

๐‘บ๐’‰๐’๐’–๐’๐’…๐’’๐’• ๐’š๐’๐’– ๐’ƒ๐’† ๐‘น๐’–๐’๐’๐’Š๐’๐’ˆ ๐’˜๐’Š๐’•๐’‰ ๐‘ท๐’๐’˜๐’†๐’“?

โ“ Questions?
๐Ÿ“– Getting Started

For more information on Training Load Balance, see:
๐Ÿ”น Running Training Load Metrics in the Palladino article library

๐“๐จ๐ฉ๐ข๐œ: ๐“๐ซ๐š๐ข๐ง๐ข๐ง๐  ๐‹๐จ๐š๐
โฉ What is Training Load?
โฉ Training Load – a two-sided coin!
โฉ Achieving a Training Load Balance
โฉ The danger of ramping up too quickly
โฉ Race-specific training