Has anybody used or find this accurate for ascertaining your LT1 from these 2 Critical Power tests.
If you don’t have access to lactate threshold testing in a lab, using critical power and an estimation of LT1 is another method to set your training zones. This method is primarily targeted at cyclists with access to power output – check below for the critical speed method! Whilst there is debate over whether critical power is analogous to LT2 or MLSS 2, critical power provides a physiological threshold to demarcate zones 2 and 3 3.
To determine your critical power, you can use the following protocol outlined below 4.
Complete a full warm up to prepare yourself for maximal testing efforts.
1. Complete a 3-minute time trial, recording the maximal average power you can produce for 3 minutes.
2. Rest for 40 minutes.
3. Complete a 12-minute time trial, recoding the maximal average power you can produce for 12 minutes.Based on your 3 and 12-minute time trial power averages, you can use this link to calculate your critical power.
Ongoing research in the School of Sport, Exercise and Health Sciences at Loughborough University suggests that you can estimate you LT1 based on your critical power result. Based on the data collect so far, LT1 equates to roughly 70-75% of your critical power .
Source: Training Zones | Sport | Loughborough University
Youtube video: Cycling Science Symposium - Institute of Advanced Studies - YouTube
I didn’t find a mention of this study/guide in the forum. Maybe it is somewhere in the forum?