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Lactate theshold guided test procedure - does it work for any of you?

Former Member over 8 years ago

I have tried the test on 3 separate days - with no luck!
First time I couldn't complete the test.
Second time I completed the test, but couldn't maintain a high enough heart rate for the last 3 min. step.
On the last test today, my max heart rate was set 10 bpm. lower, and I completed the test: but still without any result?
All 3 tests was done on the track. First 2 tests with a footpod - but today was just with pace from GPS.
Can't seem to understand why I do not get any result?

0 Former Member over 8 years ago

Here is a link to todays test:

https://connect.garmin.com/modern/activity/1461377653
I did a nice long warmup: just not included in the file.

0 timgrose over 8 years ago

Not sure what has happened here.
Last time I tried this I seem to recall the first step was warm up for 10 minutes, followed by five 4 or 3 minute efforts of increasing intensity and then a warm down step.

Your warm up step is only 1 min 11 secs and have you only have 4 "effort" steps.

Did you get a 10 min countdown on the warmup?

Did you press Start or Stop anywhere other than the start of your warm up and end of your warm down?

Was the upper HR target of the 4th interval that of your max HR you had taken 10 off?

0 timgrose over 8 years ago

Ah I see they must have changed this since last tried.
The warm up step is recommended to be 10-15 mins but the actual length is determined by you by pressing Lap when done.

So did you do only do 1:11 for a warm up within the test?

You seemed to accelerate quite a lot towards the end of the first 4 minute effort step. Did you still keep the HR within the target zone there?

What do you think your LTHR should be? Looking at the graph think in the low 160s and pace around 5:20 min/mile.

After that the HR rises but the pace seems to rise up to around 5:00 min/mile quickly but dip back a bit again before a final finish. That might have been a factor in being able to "read off" a value as not entirely smooth pace/HR relationship there.

0 timgrose over 8 years ago

I did an "at desk" test of the protocols. This is what I found.

My Max HR on the watch is 165 and min 35. Seems only max HR is used however.

Warm up until lap press (recommended 10-15 mins)
115-132 (70-80% max HR) 4 mins
132-140 (80-85% max HR) 4 mins
140-148 (85-90% max HR) 4 mins
148-156 (90-95% max HR) 3 mins
156-165 (95-100% max HR) 3 mins
Cool down recommended – timer keeps running so just run until press Stop

For me I would expect my LTHR to be either at the higher end of the 3rd range or the lower end of the 4th one.

0 chunkywizard over 8 years ago

Just to say I have had 2 lactate threshold readings in the last week. First was with a guided test. Second was on a progressive run. I guess the main thing is getting your max HR set correctly otherwise the zones will be incorrect.

CW

0 Former Member over 8 years ago

Ah I see they must have changed this since last tried.
The warm up step is recommended to be 10-15 mins but the actual length is determined by you by pressing Lap when done.

So did you do only do 1:11 for a warm up within the test?

You seemed to accelerate quite a lot towards the end of the first 4 minute effort step. Did you still keep the HR within the target zone there?

What do you think your LTHR should be? Looking at the graph think in the low 160s and pace around 5:20 min/mile.

After that the HR rises but the pace seems to rise up to around 5:00 min/mile quickly but dip back a bit again before a final finish. That might have been a factor in being able to "read off" a value as not entirely smooth pace/HR relationship there.

5:20 min/mile makes sense! That is 3:18 min/km.
I have done 1:12:39 hm and 31:58 10K when in peak shape.

0 Former Member over 8 years ago

I think the primary problem for me is, that I have a hard time maintaining a high heart rate in training. In racing I can REALLY nail it - but in training 10 beats under my maximum heart rate will feel like pure death :D

Always been like this: I have a history as an elite cyclist, and I have done Vo2max tests several times - and then nailing it hard a week or two afterwards in a timetrial - that really shouldn't be possible according to my testresults ;)

I have hit a heart rate of 186 in racing this year (running). But my maximum of 177 in the test on sunday felt like PURE death to me...

0 timgrose over 8 years ago

Yes know that feeling very well. To get high HRs I either have to be very unfit and/or well rested. Achieving a HR does not always correlate with a "good" performance however.

I did a 10K race on Sunday where I only averaged 142 with a max of 148! Was tired after a heavy mileage week (for me). And yet my max HR in the last year has been 165 and I should at least average in the 150s in a 10K. Over 20 years ago, in my late 20s, I hit 193 in a lab VO2 Max test.

0 macsimc over 7 years ago

I have also issues with obtaining an LT value:
Last week , at the end of a run ( https://connect.garmin.com/modern/activity/2350933440 ) i got a message saying that i got a new LT value:117bpm at 6:01 , which i refused.

Today i tried a guided test ( https://connect.garmin.com/modern/activity/2362345676 ) to confirm that the value was bad, but the result was 115bpm at 7:32 :)
Looking at the laps, the last one in the test, 3min in zone 5 were marked as 0 distance, when the gps distance is actually 0.62km .. I maintained the HR in the 168-175 zone requested, although i did not get to the top of the zone.
Seems that the both values are taken from the beginning of the run where indeed the HR is rising fast.
Also to mention that Vo2max never gets updated, stays flat at 43.