| Author | Message | ||
     Anonymous |
How do lactate balance point and maximum lactate steady state differ? Generally I have tested MLSS by first warming up then running 10min at a target heart rate and taking a lactate sample, then continuing at the same HR for an additional 20min and taking a lactate sample. The lactate has deviated only .2 mmol/liter between the 10min and 20min samples. MLSS is around 160 and LBP is about 150. Is a 10 BPM difference between these two measures typical? | ||
| Juerg |
Hi ' I would like to come first back with a question. MLSS is a term , which is used quite frequently , but as so often the different people have different explanation or definition , what MLSS is . So in your question you were running on your target HR. 1. How do you find your target HR. 2. During your run 10 and than the following 20 min. How was : Speed , stable or in or decreasing. How was your HR Stable , or " heart rate drift " And finnally , what were your lactate readings. An additional question could be : what was your blood sugar dynamic as well. Based on this answers I can try to give you some more info about the possible difference between MLSS and what we call the LBP ( lactate balance point. I hope to here from you soon. | ||
| Anonymous |
I used a recent LBP to set a target HR. I picked one that was 10 beats higher than LBP. I do lactate balance point testing every 4-6 weeks or so. My LBP the week prior to doing the MLSS like workout was 150bpm. I do a simple run test because I do not have access to a treadmill. Speed started out at a 2:07 for a 400 and decreased to a 2:14. I was concentrating on a constant HR. HR was held constant at 161 for the entire 30minutes. Lactate at 10min was 3.1, lactate at 20min was 3.3 I don’t have a way to measure blood sugar. My motivation for trying a MLSS was because it incorporates some measure of speed or distance. I do not have access to a treadmill to do the full blown LBP. I’m also curious to know how I’m doing with my training to predict my marathon pace. In other words, given my level of fitness what is a reasonable marathon pace. | ||
| mike |
Anon, I won't enter the discusion on the MLSS / LBP as this is discussed at length in several forums. On your other question about the marathon, you can run a marathon at the pace where you're producing about 2.5 mmL. Half marathon around 3.5mmL. These are both very solid estimates for efforts for your race. I will caution you to get a feel for this pace on the road outside instead of on the indoor treadmill as pace will differ slightly depending on your efficiency, weather, road conditions, etc. | ||
| Shane |
Mike, I have done some extensive research on MLSS and the Lactate Minimum Test. To state that anyone can complete a 1/2 or full marathon at a specific lactate level is incorrect. Lactate levels are individual, that is why the use of 2.0 or 4.0 as thresholds has not been (at least on this side of the Atlantic) well accepted. I have seen MLSS values range from 4.5-7.5 over 40 minutes. As well, glycogen storage/depletion can affect these values significantly. Anon - during validity research on MLSS, HR values differed significantly and there was HR drift of 5-10 beats over 40 minutes. To conclude that your MLSS was at a HR of 160 would be incorrect as you slowed your velocity down through the test. Retest yourself running at 2:07 through an entire 35-40 minute run - measure lactate at 10 minutes and then every 10 min (20, 30, 40). This will give you a better inication. As well, the definition of MLSS in the research is less than a 1 mmol/L increase from 10-40 minutes. | ||
| Hugi |
Hallo Jürg Wie heute telefonisch besprochen, wäre ich froh wenn Du mir eine Version in Deutsch von Fact Test auf meinen PC senden könntest (lyssparkfitness@bluewin.ch). Auch bin ich sehr an der neuen Version interessiert, jedoch müsste diese auch auf Deutsch sein. Ich danke jetzt schon für deine Bemühungen und wünsche dir und deiner Familie EINEN GUTEN RUTSCH INS NEUE JAHR Rolf Hugi | ||
| Juerg |
Vielen Dank. Wir haben die gleiche Version in Deutsch , welche Du in der Schweiz gesehen hast. Wir koennen diese entsprechend deinem Namen so preparieren , damit du auf den Pritouts Dein Fitness zentrum hast und nicht unsere email und Adresse. So wir brauchen deinen Briefkopf mit Adresse und phone / fax und evt. email. Gruss Juerg | ||
| Hugi |
Hallo Jürg Hier mein Briefkopf: Lysspark Fitness Werkstrasse 65 CH-3250 Lyss Tel. +4132 385 12 51 Fax. +4132 385 12 50 lyssparkfitness@bluewin.ch Nochmals vielen dank und ein schönes Weekend Rolf |