It’s been well established that running economy (RE) is one of the limiting factors of performance and perhaps one of the best predictors of success. It’s also enhanced by running frequency/volume.
Paula Radcliffe’s RE improved (and VO2 went down) later in her career when she started training as a marathoner and increased her mileage.
Should we conclude that Valby would run slightly faster if she wasn’t as injury prone and could sustain 70-80 mile weeks? Or does that only apply if you are running 10Ks, half-marathons, or marathons and your running economy is “genetically challenged” to begin with?
Wondering if her method has universal application as a variant of the “less is more” approach (and particularly if CT benefits have been undervalued) or just another case of a runner not getting the most out of her aerobic potential but still shining through because she’s just so must more talented than everyone else.