Training for the 1500/1650: Suggestions?

I thought that race pace (even for a 1500) was faster than threshold; isn't threshold (En2) derived from a T-3000? Well that's a very good question. I used Threshold spectrum as an expression because that's really what threshold is. To further qualify all that, let's use scientific words if I may since it would be a reasonable reference. This spectrum begins with Lactate Threshold (aerobic threshold), which is commonly defined as an accumulation of 1mmol per L of blood, over your baseline, which is often 1mml (or less). That, you can hold for real long durations. Main limitation becomes the glycogen pool really. One step over that and you reach the onset of blood lactate accumulation (OBLA) which is defined at fixed lactate level (labs love that one). It corresponds to 4mmol per liter. That when fit some may hold for little under, little over an hour. Then at the higher end of threshold spectrum you get to MAXLASS, stands for maximal lactate steady state. This is the last inflection point over which the accumulation becomes drastic. That some hold near 20-30 but more reasonably 10-20. Any work done anywhere within this spectrum should contribute to improve performances over 1500. But since this event correlates in duration and intensity with MAXLASS, work done at this level is more specific to the event. Those times are even harder to imagine and for sure not feasible. They may or may not. 2:45 is little under 1500 race pace. 7 of them appears more realistic. These interval choices were made to illustrate that holding a hard threshold set over 20 or 30min duration may be difficult to achieve. Forgot to mention that this SST intensity is kind of a spectrum (although somehow narrower) in itself. For instance, putting those 300 on 4:45 would still match this intensity. Some call that tempo. The idea is not to kill yourself so depending on what was done in previous days ect.

I thought that race pace (even for a 1500) was faster than threshold; isn't threshold (En2) derived from a T-3000? Well that's a very good question. I used Threshold spectrum as an expression because that's really what threshold is. To further qualify all that, let's use scientific words if I may since it would be a reasonable reference. This spectrum begins with Lactate Threshold (aerobic threshold), which is commonly defined as an accumulation of 1mmol per L of blood, over your baseline, which is often 1mml (or less). That, you can hold for real long durations. Main limitation becomes the glycogen pool really. One step over that and you reach the onset of blood lactate accumulation (OBLA) which is defined at fixed lactate level (labs love that one). It corresponds to 4mmol per liter. That when fit some may hold for little under, little over an hour. Then at the higher end of threshold spectrum you get to MAXLASS, stands for maximal lactate steady state. This is the last inflection point over which the accumulation becomes drastic. That some hold near 20-30 but more reasonably 10-20. Any work done anywhere within this spectrum should contribute to improve performances over 1500. But since this event correlates in duration and intensity with MAXLASS, work done at this level is more specific to the event. Those times are even harder to imagine and for sure not feasible. They may or may not. 2:45 is little under 1500 race pace. 7 of them appears more realistic. These interval choices were made to illustrate that holding a hard threshold set over 20 or 30min duration may be difficult to achieve. Forgot to mention that this SST intensity is kind of a spectrum (although somehow narrower) in itself. For instance, putting those 300 on 4:45 would still match this intensity. Some call that tempo. The idea is not to kill yourself so depending on what was done in previous days ect.