I'd be surprised to find that this is any secret recipe; here is the test we ran to determine MLSS:
[FONT= courier new]TEST: [/FONT]
[FONT= courier new]Warm Up: 5min Spin zone 1-2 [/FONT]
[FONT= courier new]5min gradually build to zone 3 4 x :30 HARD / :30 ez [/FONT]
[FONT= courier new]3min Spin[/FONT]
[FONT= courier new]TEST SET = 2 x 8min Time Trial (on trainer) @ 85-90 rpms seperated by 5min soft pedal[/FONT]
[FONT= courier new]**record HR @ :02,:04,:06,and:08 and AVG HR for entire session. [/FONT]
[FONT= courier new]These efforts should be as hard as you can go for 8min.[/FONT]
[FONT= courier new]Warm Down as needed [/FONT]
You average the recorded HRs, and that's your AT.
MLSS is 10 bpm below.
Below is a letter I saved from Dirk and Joe Freil. I don't remember where or when.
[FONT= verdana]Joe and Dirk Friel[/FONT]
[FONT= verdana]Dear Mr. Ludden, [/FONT]
[FONT= verdana]I hope your half marathon went well and you are recovering. Trying to determine your lactate threshold HR from the last 20 or 30 minutes of a half marathon is probably not accurate. The length of that event is long enough to have built up fatigue and soreness which would not allow you to maximize your effort. It can however be an indicator of a lower limit of lactate threshold and give you feedback as to where your LTHR might be. [/FONT]
[FONT= verdana]A strong 30-minute time trial when you are fresh and motivated will yield a higher average heart rate as compared to the last 30 minutes of your half marathon. [/FONT]
[FONT= verdana]The same can be said for a longer road cycling event, unless the tie trial effort is performed at the beginning. [/FONT]
[FONT= verdana]One suggestion may be to incorporate your test into the beginning of a build or base phase before you have lingering fatigue from previous weeks. Be sure to make the test workout early in the week following a rest week.[/FONT]
[FONT= verdana]Good luck this season,[/FONT]
[FONT= verdana]Joe and Dirk Friel [/FONT]