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Garmin Foot Pod - calibrate? how/why...

I am now the proud owner of a garmin footpod so that I can more easily track my treadmill runs in wko plus.  I stuck it on my shoe and ran on the treadmill this morning.  The pace it showed was a bit faster than the treadmill at speeds faster than 7:00 but slightly slower at slower speeds, like showing 8:14 when the TM was at 8:00. 

Anyone else notice a difference in readings [I am not sure "accuracy" should be used] at different paces?

Would calibrating the thing using an 800 meter course have any effect on this?

Should I even care as it is pretty close right out of the box and does not really matter than much anyhow?

Doesn't it seem kinda stupid that it will not self calibrate when using it outside with GPS?

 

Comments

  • Posted By Chris G on 26 Jan 2010 05:21 PM

    I am now the proud owner of a garmin footpod so that I can more easily track my treadmill runs in wko plus.  I stuck it on my shoe and ran on the treadmill this morning.  The pace it showed was a bit faster than the treadmill at speeds faster than 7:00 but slightly slower at slower speeds, like showing 8:14 when the TM was at 8:00. 

    Anyone else notice a difference in readings [I am not sure "accuracy" should be used] at different paces?

    Would calibrating the thing using an 800 meter course have any effect on this?

    Should I even care as it is pretty close right out of the box and does not really matter than much anyhow?

    Doesn't it seem kinda stupid that it will not self calibrate when using it outside with GPS?

     

    1) yes.  After calibration, my pod is quite accurate between Z2 and Z5, but off a bit at Z1 (high)

    2) when I calibrated, it had the option of 800 meters or 0.5 miles.  As long as what you picked matches the track, you should be good.

    3) only if you feel the need to be uber-geeky about what ends up in WKO (and yes, I feel that need, so my answer would be yes)

    4) absolutely.  The only plausible answer I can come up with to why is that maybe the GPS accuracy isn't good enough to do it only over 0.5 miles.  But it feels like it should be an option.

     

  •  I calibrated mine with GPS (I have a 310XT). It gave me the option of either GPS calibration or doing it on a track. After calibrating it has been pretty accurate. I ran my indoor 5K TT with on it on the University indoor track and it measured out at 3.18 miles for the 5K. On the treadmill, it registered 7.30 miles for my 1 hour run on Sunday vs the treadmill reading of 7.38 miles. Overall I think pretty reasonable.

  • Yes, calibrate it and also if you switch types of shoes re-calibrate. I know it sounds weird but there was a pretty big difference between the New Balance, Nike and Zoots I have used it with. I typically calibrate mine at around MP and find that it is than accurate enough for the workouts we do.

    FWIW, I have found the cadence to be the most valuable part of having the foot pod. My cadence used to be great when I would count my steps for 30 seconds because I was focusing on it. The foot pod allows me (when WKO works right) to look at cadence for an entire run and see when I got lazy.

  • Matt - how do you set WKO to pick up the cadence from the footpod? I get the cadence in Garmin TC, but can't figure out how to get it to show up in WKO+. I am sure it is ridiculously easy ;-).

    Sorry to hijack your thread Chris!
  • 310xt can be calibrated with GPS.  What I ended up doing was .5 mi calibration on the treadmill.  I did have a z1 to z4 difference, but I just tweaked the calibration manually over the next few runs and it is spot on now (assuming the treadmill is accurate) and I'm not noticing the z1 to z4 difference.     I agree with Matt re: the cadence.  I've started wearing the footpod outside just to get the cadence. 

  • Posted By Robin Cline on 26 Jan 2010 06:49 PM



    Matt - how do you set WKO to pick up the cadence from the footpod? I get the cadence in Garmin TC, but can't figure out how to get it to show up in WKO+. I am sure it is ridiculously easy ;-).



    Sorry to hijack your thread Chris!





     

    Well ... in WKO 2.2 it works perfect via the direct download or import from GTC. 

    In WKO 3.0 it doesn't work for me (but works for Tom Glynn).  The cadence shows up in GTC and in the TCX file I export but WKO doesn't import it.  I have posted over at Training Peaks forums about this, but they don't seem to care as they have not replied to my post or the few others that have posted in the last few weeks.

  • Thanks all. I will calibrate the thing and report back. Cadence huh? Will have to check it out, never paid much attention to running cadence other than to notice short strides make it easier to hold a faster pace for me. Fun Fun.
  • I got a foot pod recently. I read that it doesn't have to be calibrated, but it should. It will be more accurate. I also read that you should re-calibrate on a regular basis. Can't remember what that was, but I think it was every couple of months. Also, on a track, not on a treadmill.

    When I run on the treadmill, my results are surprising similar. My running and biking cadences are also almost identical, with most of my activity around 84-87 rpm.

    I haven't had any import problems with the data into WKO, either 2.2 or 3.0. I have a slightly older version of GTC than Matt, but everything else seems similar. Not sure why others are having problems.


  • I use 2.2, but when I import my run this is what I get - it seems like I should be able to find a way to see the run cadence on both the graph and the summary. I am sure it is very simple, but I don't find the training peaks "user's manual" very simple and haven't been able to figure out how to add the cadence info so that I can see it. Maybe it's just me that's simple



    I don't think it's a problem w/ the info not being there as much as I don't know how to tell WKO I want it included in the charts, graphs, etc. For that same lap Garmin TC tells me my cadence was 84.

    Lap 4 (0:04:30.79):

    Duration: 4:31

    Work: n/a

    rTSS: 7.5 (0.983)

    NGP: 8:51 (181.8 m/min)

    VI: n/a

    Pw:HR: n/a

    Pa:HR: 4.66%

    Distance: 0.5 mi

    Elevation Gain: 28 ft

    Elevation Loss: 27 ft

    Grade: 0.0 % (1 ft)

    Min Max Avg

    Heart Rate: 154 161 159 bpm

    Speed: 4.3 7.8 6.6 mph

    Pace 7:40 13:48 9:05 min/mi

    Altitude: 964 978 971 ft



     

  • @Chris remember if you go to the track lane 1 (inside lane) is the the lane to use. I wrestled and played football so I didn't know this.
  • I purchased one, but haven't been to the track yet to calibrate it. Most of my running these days is indoors on a dreadmill. I know the dreadmill is not calibrated, so my mile repeats aren't accurate with the belt speed, RPE, etc. I've just got to get off my but and DO IT already.
  • Do you have a 310/405? They can both calibrate with the GPS. Best to use a straight section of road if possible. Treadmills are notorious for not being accurate. Also keep in mind that the foot pod calibration is specific to the shoes you are wearing and the surface you are running on as well as your running mechanics at whatever pace your calibrate it at. So if you calibrate on the road at a moderate pace that's where it will be most accurate. Heading off road to dirt trails or significantly increasing/decreasing your pace may begin to impact accuracy because the physics of your foot strike are changing and the accelerometer in the foot pod isn't getting the same feedback it was calibrated with. Since I have GPS I really only use the foot pod to monitor cadence and occasionally supplement the speed/distance if the GPS drops out in heavy tree cover.
  • Sorry to hijack but if the footpod is not accurate on a treadmill are they at least consistent? Or is there any real way of knowing
  • It's not the the foot pod isn't accurate on the treadmill...more that you can't believe the treadmill speed/pace setting. I'm not sure how the moving belt might impact the accelerometer though. Seems the belt being pulled under your foot might introduce some error. Regardless, I assume it would at least be consistent which would give you a way to ensure fairly consistent pace from one treadmill to the next.
  • Matt,

     

    Just ordered a footpod for my 310xt as I like to keep track of my cadence with running 94-96/min and get tired of counting. Can the footpod keep track in realtime display on the Garmin or only after download?

    Doesn't matter much as it's on the way but I thought I'd ask.

    Vince

  • Posted By Vince Hoffart on 27 Jan 2010 08:03 PM

    Matt,

     

    Just ordered a footpod for my 310xt as I like to keep track of my cadence with running 94-96/min and get tired of counting. Can the footpod keep track in realtime display on the Garmin or only after download?

    Doesn't matter much as it's on the way but I thought I'd ask.

    Vince





     

    I use mine with a 305 and it can show real time cadence, lap average cadence, or average cadence all during the run.  I personally have my FR set to auto lap every mile and show lap average pace and cadance as they are more valuable to me than the real time data that isn't always real time.

  • Cool. I will dial it in this weekend with all my spare time.

     

    Vince

  • Posted By Robin Cline on 27 Jan 2010 05:36 AM



    I use 2.2, but when I import my run this is what I get - it seems like I should be able to find a way to see the run cadence on both the graph and the summary. I am sure it is very simple, but I don't find the training peaks "user's manual" very simple and haven't been able to figure out how to add the cadence info so that I can see it. Maybe it's just me that's simple



    I don't think it's a problem w/ the info not being there as much as I don't know how to tell WKO I want it included in the charts, graphs, etc. For that same lap Garmin TC tells me my cadence was 84.

    Lap 4 (0:04:30.79):

    Duration: 4:31

    Work: n/a

    rTSS: 7.5 (0.983)

    NGP: 8:51 (181.8 m/min)

    VI: n/a

    Pw:HR: n/a

    Pa:HR: 4.66%

    Distance: 0.5 mi

    Elevation Gain: 28 ft

    Elevation Loss: 27 ft

    Grade: 0.0 % (1 ft)

    Min Max Avg

    Heart Rate: 154 161 159 bpm

    Speed: 4.3 7.8 6.6 mph

    Pace 7:40 13:48 9:05 min/mi

    Altitude: 964 978 971 ft



     



    Robin,

    I get cadence data on the bike and run automatically.  No need to tell WKO.  Not sure it is possible anyway.  Do you get the data on the bike but not the run?

     

    tom

     

    tom


  • Tom -

    Yes, get cadence on the bike and it shows automatically when I download from PT. Good to know that maybe it's not my lack of computer savy image. Maybe I'll pick up the phone and call them one of these days or put a post on the TP forum. It's not that big of a deal since it does show on Garmin TC. I am just geeky enough about it though that I would like to see it in a pie chart like it shows up for cycling and/or on the graph w/ the other info on WKO+.

    Thanks!
  • Posted By Robin Cline on 28 Jan 2010 04:43 AM



    Tom -



    Yes, get cadence on the bike and it shows automatically when I download from PT. Good to know that maybe it's not my lack of computer savy . Maybe I'll pick up the phone and call them one of these days or put a post on the TP forum. It's not that big of a deal since it does show on Garmin TC. I am just geeky enough about it though that I would like to see it in a pie chart like it shows up for cycling and/or on the graph w/ the other info on WKO+.



    Thanks!





    I have posted to the TP forum twice about this issue and I did a search and at least 4 other people have posted about it as well and they have not responded yet.  So I don't think it is anything you are doing wrong.

    Interestingly some of the people posting stated it worked with the first build of wko 3.0 and now does not work with the latest build.  I never tried it with the first build so I don't know if it would have worked for me.

    Tom seems to be one of the luckly ones as it works for him with the newest wko build.  I'm tempted to uninstall GTC and install theprevious version to see if I cna get it to work since that is what Tom is running, however I need the latest version to support the edge 500.

    I'm getting by just fine with checking the cadence data in GTC before exporting it as everything else is coming through fine in wko.


  • Thanks Matt - Sounds like were in the same boat then except that I am running 2.2. I haven't upgraded to 3.0 since I don't have any of the newer gadgets that really require it. Except mayb this footpod! image
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