Your watch says you are asymmetric. Now what?

Wearables made gait metrics visible to everyone and gave a lot of people with clubfoot a new thing to worry about. The number that matters is not how lopsided you are. It is whether that has changed.

Written by Heath, who has lived it: casts from birth, a fusion at sixteen, the US Army, and distance running.

Is your asymmetry telling you anything?

Four questions. Answer from your own history, not against anyone else’s figures.

How does it compare with your own baseline?

Look back three or six months, not at today alone.

Compared with then

Stable is the single most reassuring thing on this page, whatever the absolute figure.

A slow drift usually tracks conditioning rather than structure.

A step change is worth explaining. Structure does not change quickly; capacity does.

What happens within a single run?

Compare the first mile with the last.

Across the run

A pattern that holds all run is a well-supported one.

Expected. That is your endurance limit becoming visible, and it is useful information.

Degrading early suggests you are starting each run with less than you think.

Is anything hurting?

During or after, on either side.

Pain

Then the metric is a curiosity rather than a warning.

Familiar and stable is a different category from new.

New pain alongside changed numbers is the combination worth acting on.

Has your training changed?

Volume, surface, shoes, or a gap.

Recently

Then look at recovery and sleep before looking at mechanics.

One of the most common reasons numbers move.

Coming back often looks worse in the data before it looks better.

What the numbers are saying Four questions about your numbers

This is not about whether your asymmetry is large. It is about whether it is stable, and whether anything else is changing alongside it.

Why symmetry is the wrong target

Your stride is asymmetric because one foot has different capabilities from the other. The asymmetry is not a fault in the movement; it is the movement working around a structural fact.

Deliberately evening it out means asking the side with less propulsion, less range and less muscle to do a larger share. Nobody has studied what happens when a runner with clubfoot forces a symmetrical stride, but that is a hard trade to argue for on mechanics alone.

The asymmetry is the solution. Removing it puts the problem back.

There is a second reason to leave it alone. The research linking gait asymmetry to running injury is inconsistent even in runners without a structural difference, and none of it is about clubfoot. A number on a watch is not a diagnosis.

Building a baseline also takes longer than people expect. My own watch archive covers six years of running. The running-dynamics fields exist for only fourteen months of it, from 2025, and stance time balance, the split between my two feet and the one number this whole page is about, was never recorded once. I cannot show you my asymmetry as a number, and I have run a long way without one. If you are starting to track it, give it months before you trust the trend.

Video · 4:33Why my stride is short, filmed rather than described. Watch on YouTube →

What the metrics actually measure

Metric	What it reflects in clubfoot	Worth tracking?
Ground contact balance	Often longer on the side producing less propulsion	As a trend, yes
Ground contact time	Rises with fatigue on both sides	Yes, within a run
Vertical oscillation	Often unremarkable	Low value here
Stride length	Shorter is usually better for you	Yes, alongside cadence
Cadence	The one number you can usefully change	The most useful of all
Absolute balance percentage	Your anatomy, expressed as a number	Only as a baseline

Wearables are consistent, not precise. They are good enough to show change in one person over time, which is exactly what this page is about, and they are not clinical measurements and should never be compared against a friend’s numbers.

Asymmetry and metrics

Are watch balance figures accurate?

They are consistent and not precise. A wearable measures reliably enough to show change over time in one person, and it should not be treated as a clinical measurement or compared against anyone else’s numbers.

What does ground contact time asymmetry mean?

Usually that one side spends longer on the ground because it produces less propulsion and needs more time to generate the same impulse. In clubfoot that is the expected direction rather than a fault.

Does asymmetry cause injury?

The research linking gait asymmetry to running injury is inconsistent, and none of it looks at clubfoot. Sudden jumps in load and poor recovery are the more familiar culprits.

Will strength work reduce it?

Often, a little, as a side effect instead of a target. Improving calf and hip strength on the affected side tends to narrow the gap somewhat, but chasing the number directly is the wrong way round.

How much stride asymmetry is normal with clubfoot?

There is no published normal for clubfoot specifically. What matters is your own baseline and whether it is stable, because a consistent asymmetry reflects your anatomy while a changing one reflects something new.

Are running watch balance figures accurate?

They are consistent, not precise. A wearable measures reliably enough to show change over time in one person, and it should not be treated as a clinical measurement or compared against anyone else’s numbers.

Should I try to correct my asymmetry?

No. The asymmetry is a solution to a real structural difference, and consciously evening it out shifts load onto the side with less capacity. Train strength and tolerance and let the pattern follow.

When should asymmetry actually worry me?

When it changes from your own baseline, when it worsens sharply within a single run, or when it appears alongside new pain. A stable number, however lopsided, is far less interesting than a moving one.

Sources

Where this comes from

1 Clubfoot overview and treatment contextAAOS OrthoInfo 2 Functional evaluation of the treated clubfootPubMed Central 3 Three-dimensional alignment and adult residual deformity after Ponseti treatmentPubMed Central 4 Long-term follow-up of surgically treated clubfootPubMed Central 5 The adult sequelae of treated congenital clubfootPubMed

Why the sides differ →The propulsion gap the metric is detecting. Fatigue asymmetry →Why the gap widens late in a run. Off the run →The same asymmetry at walking pace.

Why my stride is short, on video, with the numbers from my own watch . Watch it on YouTube, or see the rest of the channel.