4:00/km is exactly my HM average pace. 4:00/km is exactly my HM average pace.
Most of my workouts in the 7 weeks between the two tests were at this pace or slower. Rarely faster and definitely not for long durations. I did a few 400's sessions outdoors with 30 second rest in which I went faster than my HM pace (but also slower at times, due to the harsh humid summer I'm in).
Moreover, I went ahead and did my first VO2 Max work yesterday, after not having done any such work since March. I wanted to do so for two reasons:
1) Sharpen up for a local 5K that I might do next week.
2) Test the system and just introduce some variety to the stress stimulus I've been subjecting myself to.
So I set out to run a classic 5x1K in the evening. It is still very hot over here, but was not overly humid. It was 32.8 degrees Celsius with a relative humidity of 56% yielding a real feel of only 38.3 degrees Celsius (I say only because we can get days with a real feel of 50-55 degrees Celsius, so yeah).
Having woken up with a somehow tight chest and given the conditions, I thought I'd be satisfied with hitting 3:30/km pace, or anything around that.
I split the first rep in 3:20.3, and just started laughing out loud just as I did when I watched Jakob waving to the crowd during the semi final the other day. That first rep felt incredibly easy that I thought there must be something wrong. After a 400m jog recovery, I continued. Well here are the splits for the second, third and fourth kilometers:
3:21.5
3:22.1
3:23.9
Things did get tough for the last reps, and I mentally quit on the fifth last rep after 0.5 km which was also at 3:21/km pace. HR maxed out at 198 bpm which is 98% of Max HR for me.
It was hot, I was solo, I had done weight training and 4 km easy in the morning before work, and I still managed to run faster than I used to during the winter when I had company for some of the workouts.
Sure, I have been running more mileage lately, but that can't be the sole reason behind this. There's something to running these controlled sub threshold efforts.
On we go.