I question this. Yes, people running really fast have a high cadence. Do you think they have the cadence at their recovery pace, I would think not. Notice in your post Kipsang has a cadence 5% faster than Van Lierde, that seems relevant, since Kipsang was running faster. I do not see any proof that 180 is some magic number, just that really fast people seem to be close to it, but another explanation is that cadence increases as speed increases. I think it makes more sense that as you run faster, your cadence increases, maybe not linearly. I believe someone even did this for the olympic 10k, the runners cadence was directly related to their speed at that portion of the race.
Obviously for people that are overstriding, increasing the cadence is a way for them to shorten their stride and fix a flaw. But, that is to correct a flaw, not because the higher cadence is better, just that shorter strides are better.
Also what does glute strength and core strength have to do with this?
Running Speed = stride length (push off force) x RPM
Biking Power = crank torque x RPM
In both cases as either Running speed goes up or Biking Power goes up, we do it by gradually increasing both. That’s just the way the human body works.
100m sprinters run at 4.1 to 4.7 strides per second. Around ~4.1 strides per second is Usein Bolt ~4.6 stride per second is Johan Blake. These guys are basicallly running at 120-140 RPM. Bolt just has more stride length than Blake.
This is the extreme over sub 10 second. As a point of reference, the top bike sprinters are sprinting at 115-125 RPM too (guys like Cavendish), so it is not far off the range of the top 100m sprinters (they just don’t need to go as high because they are not limited by limb length…they can apply crank torque through gearing benefits).
If you were to race RAAM or jog just above walking pace it would be crazy to spin your legs around at 90 RPM…that’s a lot of movement of heavy limbs to go slow. It still takes energy to move your heavy limbs around, and pointless to do the same amount of lifting work per stride when your crank torque is low, or your push off force is low.
Dev