Fun with Cadence :-)

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Feb 2020
12:50pm, 20 Feb 2020
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fetcheveryone
If your watch records cadence, try out this new tool:

fetcheveryone.com/training-analysis-cadence.php

It's just a beta at the moment, so don't be worried that you can't navigate to it from anywhere other than this thread.

What I see when I look is:

1) my pace and cadence are largely correlated
2) my stride length and cadence are also largely correlated
3) I do most of my running at about 170 cadence
4) I wonder whether my stride length for a given cadence has increased a little since I've been running again consistently after calf injury in November.

If you saw this in my blog earlier, go have another look, because I've added a second graph, which shows cadence at a given pace (rather than the other way round). I've also trimmed out any bars where you've done less than a mile, to make the data a bit clearer.

I'm interested to find out what sort of stuff you see when you look at your data. Cheers!
Feb 2020
4:52pm, 20 Feb 2020
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fetcheveryone
*bump* for the afternoon crew.
Feb 2020
5:02pm, 20 Feb 2020
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Silvershadow
On my mobile the second graph goes off the side of the page unless I turn the phone sideways. Interesting though
Feb 2020
9:28pm, 20 Feb 2020
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Fitz
I see that across the cadence range 174-184 my stride length doesn't alter, so increasing cadence has a direct and linear effect on my pace from 9:10 down to 8:39.

Looking at it the other way, across the pace range from 9:20 down to 8:20, my cadence stays pretty flat at 176-177 and my stride length increases from 100 to 112.

At face value the two statements *seem* contradictory and counter-intuitive but it's late and I'm tired so I'd probably want to muck around with some data in a spreadsheet to prove it to myself.

Also, does it mean I'm Doing Running correctly, or incorrectly? I gots to know!
Feb 2020
9:42pm, 20 Feb 2020
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Nellers
I take this is only going to work for running, not for cycling or...….other non-specific training types where cadence is recorded?
Feb 2020
10:01am, 21 Feb 2020
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larkim
I've got a similar contradiction to Fitz which makes me wonder whether the impact of bucketing paces togther might be compromised as a calculation somewhere, unless I'm missing something in the logic in my head!
Feb 2020
10:08am, 21 Feb 2020
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fetcheveryone
The data is gathered by first chopping your run into 100 metre segments. This step smoothes out the GPS data (if you've ever looked at instantaneous pace on a slightly older Garmin, you'll know why this helps). Each segment has a distance in metres, time in seconds, and an average cadence. From there, I just lob stuff into buckets.
Feb 2020
1:12pm, 21 Feb 2020
10,410 posts
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larkim
Interesting, that all sounds sensible (I use a data field on my watch that smooths out pace to the last 60s to avoid using instananeous pace for that reason).

Which way do the pace buckets go in terms of averages (on the second graph).

Does the 7:20 bucket include all 100m segments with paces from 7:29.9 to 7:10 or does it include only 7:20-7:00.1 (or 7:39.9 to 7:20)?

On my current graph, the top one shows paces 8:33 and 8:26 against cadences 180 and 182.

On my bottom graph the cadence 180 is on the 9:20 bucket, 181 on the 9:00 bucket and 182 on the 8:40 bracket.

I'd expect there to be overlap between them, but there isn't.
Feb 2020
1:13pm, 21 Feb 2020
23,399 posts
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fetcheveryone
7:20 would be 7:01 down to 7:20, etc.
Feb 2020
1:22pm, 21 Feb 2020
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oumaumau
Black cat!

I've lost my 200+ data which was there a few days ago. It was from a hill sprints session, so the pace was slow, but cadence high. Seems to have been 'smoothed off', as I now have a max cadence of 182...

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Maintained by fetcheveryone
If your watch records cadence, try out this new tool:

fetcheveryone.com/training-analysis-cadence.php

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