Library of accelerometer traces?

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William Connolley

Jun 9, 2012, 5:39:30 PM6/9/12
to talos-rowing
Anybody got any decent traces from a high-quality VIII? (well, or any
high-quality rowing at all I suppose) I'd like to compare it to ours
(reasonable quality, will churn along at 2:00 at 20 ish).

Here's the trace (Samsung Galaxy Y, many thanks to Tal for making
Talos work on the low-grade screen of this phone):

And here's a fragment, annotated:

Outlined in yellow is a pile of stuff that shouldn't be there as we
finish / hands-away / rockover not quite in sync. Arrowed in pink is
either a slackening of the power mid-stroke, or possibly just the
phone moving slightly - its only velcroed down. That's why I'd like to
see some other people's traces.


Michael Hosemann

Jun 10, 2012, 6:31:16 AM6/10/12
Hi William,

have you had a look at the "Rowig Faster" book? There is a chapter on
analysis. It contains acceleration graphs for different parts of the
boat. There also is a paper by one of the co-authors of the book where
he goes into even more detail:

Hope this help,
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Michael McGuirk

Jun 10, 2012, 2:03:49 PM6/10/12
Here's one of a quad row from a while back.

I haven't tried to analyze it so I'd be interested to know what you think.


William Connolley

Jun 12, 2012, 5:25:18 PM6/12/12
Dropbox tells me: "nothing here. The file you are looking for has been deleted or moved". Is it non-public, perhaps?


Michael McGuirk

Jun 12, 2012, 5:38:20 PM6/12/12
Try this:

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William Connolley

Jun 14, 2012, 5:02:38 AM6/14/12
Thanks for that. You have less noise on your trace than us, so you must be smoother :-). I'm still not sure how to interpret these, but it looks to me as though your peak power is shifted towards the finish, whereas ours is more at the catch / through the stroke. It also looks like your decceleration just before the catch peaks (relative to your max power) higher than ours, which might be bad.

ps: MH: thanks for the coachesinfo link, that was instructive too.

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