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dionradford
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Quote dionradford Replybullet Topic: Low value for TE after a hard session
    Posted: 16 Aug 2010 at 23:19
I  know the calculation of TE values has been the subject of much debate so there may not be an answer to my question, but here goes.

I do a 13mile ride to work ocassionally which would typically take me to TE 3.4-4.0 depending on how hard I ride.

Today I rode with more effort than I have previously, recording an average HR of 155 over the 50 minute ride. My time above 157bpm was about 30 minutes (HR zone 4 from my garmin device) - 10 minutes more than I had ever done before.  However my TE was just 3.2. It sat at 3.2 even when my HR was went over 160 for about 4 minutes at the end of the ride. My max is set at 185 which is a bit of a guess.

I didn't find the ride really hard - my HR was elevated more than usual and my average speeds were higher than usual, but recovery was normal.

Was I just in better physical condition?

Could this be a problem with the communication between the belt and watch - ie not sending the R-R correctly? How would I know because I can't download the data from the watch?

Thanks


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Scuttle
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Quote Scuttle Replybullet Posted: 17 Aug 2010 at 10:06
If you loaded the daily coach recommendation into your watch instead of starting a blank training session then the maximum duration for the session (eg. 40 mins to TE3.5) is hard set. 

In this case you can continue training after 40 mins, but the TE stops accumulating.  Is this what happened?

I've come across this a few times when I loaded up a coach recommendation and then pushed out the training session past the recommended duration. 

There is one point I've never been able to confirm and perhaps somebody else could help:

I personally think it is the duration that is hard set and not the TE target.  I almost always reach the target TE before duration. 

It has always been my experience that the TE continues to accumulate up to the recommended session duration in mins and does not stop when the TE target is reached.

Anyone?


Edited by Scuttle - 17 Aug 2010 at 10:07
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dionradford
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Quote dionradford Replybullet Posted: 17 Aug 2010 at 22:09
Thats an interesting point that never occured to me. It might have been a 40 minute coach session, which if your theory is correct it would explain the low TE result.

In the last 5-10 minutes I think I checked how much time was left (duration) and saw no value - I can't be sure. I will take more notice next time and try to validate your theory.

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Eddie Fletcher
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Quote Eddie Fletcher Replybullet Posted: 28 Aug 2010 at 13:41
Hi Guys
 
TE/EPOC is AC, HR and Duration related - at higher intensities and with rising HR TE/EPOC should continue to rise (in theory ad infinitum into level 5) so shouldn't (doesn't) stop rising after say 40 mins - why would it (although there are durational limits to the applicability of TE/EPOC concept).
 
There are issues in the algorithims about low intensity HRs and the TE/EPOC calculation - the situation described above my indicate an issue within the coach function.
 
There may also be an issue with 'loss of transmission' so no data for the watch to react to.
 
It's why I like the log transfer facility in the t6 - I can analyse what is going on in STRaM and my specialist Firstbeart software.
Eddie Fletcher
Sports Physiologist & Coach
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dm935
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Quote dm935 Replybullet Posted: 01 Sep 2010 at 03:46
TE will stop accumulating based on your HR zone. For example, I will never hit a 2.0 if I don't exceed 130 BPM. In order to get into the 3 range, I need to hit 140. High 3's -145. If I want the 4's than it's got to be over 145. Maybe this is your issue.


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Scuttle
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Quote Scuttle Replybullet Posted: 01 Sep 2010 at 10:31
Just to clarify - I did mean EPOC accumulation in terms of the Coach function on a T4.  I totally understand that your actual EPOC will continue to accumulate as long as your heart rate remains sufficiently elevated.

Next time I use the Coach function I'll test it and let you know if the EPOC continues to accumulate even after the recommended session duration has been reached.

There is a useful table on page 30 of Eddies T6 Running Guide that shows Maximum training time in mins for each TE level, by Activity Class.  Also Maximum HR by TE level.


Edited by Scuttle - 01 Sep 2010 at 10:34
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dm935
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Quote dm935 Replybullet Posted: 01 Sep 2010 at 17:20
LOL Oh I see what you mean. It just stops counting once you hit your target in the coach!

I have a T6C and am not familiar with the T4 so I just misread read your post.

take care,

Doug
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eg41
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Quote eg41 Replybullet Posted: 04 Sep 2010 at 15:41
Hi Dion...!

I think there is something wrong in your belt, but try next time moisten the elctrodes of the belt before exercise. If that don´t help, call the Suunto service to get a new belt.
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dm935
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Quote dm935 Replybullet Posted: 04 Sep 2010 at 17:27
Suunto service worked great for me! My T6c was draining the batt every 3-4 weeks and I was getting crazy HR numbers. It would start at 200 bpm just standing there and then would come down to a resting pulse in a minute.

They paid for the shipping in and back and swapped me out a new watch and upgraded my belt to the dual all in one day. I did have to wait about 10 days for the return shipping, during which I returned to my trusty POLAR which still works with the original batt after 9 years!
 
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svettinacka
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Quote svettinacka Replybullet Posted: 05 Sep 2010 at 01:33
I don't think the numbers were unrealistic. I had a similar experience as I commuted during the summer period. A 45-minute ride that hit with a TE of 4.2 in mid June fell down to only 2.6 in early August.

You tell that the ride did not feel to hard, so it probably wasn't Clap

(This does not exclude the possibility of belt battery needing replacement or bad contact for a single ride, but I don't think so.)
Lacing the shoes is the hardest part.
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