For today's track workout I decided to do a "transition" type session where I'd start at a slightly faster than threshold pace and ramp down to interval pace - the vehicle for this - 800m repeats w/ 2.5-min rests.
I had done this workout before back in October in the build leading up to the winter season. Here are the results of that session:
| Rep # | Time | Ave HR | Max HR | HR- 128 | HR Min |
| 1 | 2:49 | 146 | 157 | 1:00 | 114 |
| 2 | 2:48 | 152 | 163 | 1:05 | 117 |
| 3 | 2:44 | 155 | 169 | 1:10 | 117 |
| 4 | 2:41 | 159 | 170 | 1:35 | 121 |
| 5 | 2:38 | 162 | 172 | 1:45 | 128 |
| 6 | 2:32 | 165 | 174 | 1:52 |
The idea is to get the body prepared for the faster paces (i.e. long interval sessions) that are coming. The post from that workout can be seen here. BTW - HR-128 and HR-Min are the time it took for the HR to get back to 128 and the min-HR during the subsequent rest period.
I did today's workout a couple weeks earlier in the build than last time, but knowing I'm in considerably better shape than I was in October I penciled in the target paces as follows: 2:42-2:40-2:38-2:37-2:36. (I was leaving a 6th rep as optional depending on how the session went)
The first rep came in as planned at 2:42, but the second rep started a bit quicker and stayed that way throughout. I hit the watch and saw a 2:36 on rep #2 and immediately said, "damn, too fast". I didn't figure I'd be able to maintain that pace, but that's in fact what happened: 2:36-2:37-2:36. I was quite surprised - aside from rep #1 these were all very close to long interval paces.
But a quick look at the data shows that clearly this was not long interval effort:
| Rep # | Time | Ave HR | Max HR | HR- 128 | HR Min |
| 1 | 2:42 | 150 | 159 | 0:48 | 105 |
| 2 | 2:36 | 155 | 164 | 1:00 | 112 |
| 3 | 2:36 | 157 | 167 | 1:17 | 118 |
| 4 | 2:37 | 158 | 167 | 1:27 | 118 |
| 5 | 2:36 | 158 | 168 | 1:31 | 121 |
In fact, the HR data is quite a bit better than the October data even though the paces here are faster. I was again surprised to see that the HR never exceeded 168 the entire workout. However, I will state that the last two reps felt more difficult than that HR data would suggest, but I think this is likely due to my legs being tired. I did not expect to be hitting these paces today - if I had, I'd have made sure my legs were a little more rested coming into the workout. Nine sub-7 minute miles yesterday on the heels of the 7-miler @ 6:44 pace the day before did not set me up well for a fast workout today, but again I wasn't expecting this workout to go as well as it did. If I thought I'd need to go low 2:30s in order to get the HR up to 170-173 I'd have made sure the legs were rested coming in.
Also, for comparison - here's what a 5 x 800m long interval session looked like back in December:
| Rep # | Time | Ave HR | Max HR | HR- 128 | HR Min |
| 1 | 2:37 | 155 | 167 | 1:08 | 114 |
| 2 | 2:34 | 160 | 172 | 1:25 | 118 |
| 3 | 2:35 | 162 | 172 | 1:37 | 121 |
| 4 | 2:34 | 162 | 173 | 1:52 | 122 |
| 5 | 2:35 | 163 | 174 |
The paces of reps 2-5 are about 2-seconds faster than today, but at the cost of considerably higher HRs.
In short, today I was able to hit close to interval paces (without that ever being the intention) at HRs that were lower than what I'd expect from a transition workout. Maybe this will kick start the motivation again - hell, after the 5th rep today I even threw in a 400m.
Training:
Fri, 2/27: AM 5-miles @ 6:58 pace
PM 4-miles @ 6:56 pace
Sat, 2/28: 5-miles, including 5 x 800m (2:42-2:36-2:36-2:37-2:36) plus 400m (74): 2.5-min rests