The technique depends somewhat on the speed/distance; The optimum technique is different for a 100 meter sprint, a 5 km on a track, a road marathon and a 100 mile ultra in the mountains...
Its because there are two ways to think about it. 1. The biomechanical most efficient way. (Which can change depending on your specific biology) 2. The motor program in your brain. When you shift running form it takes time for your brain to catch up - So even though you might be running biomechanically better, in the beginning it will be harder until the brain catches up. I hope that helps.
One of my main issues with the book is the suggestion that switching from heel strike to forefoot will reduce injuries. There's just no good body of research to back-up that kind of bold statement. At most it changes the types of running injury you're likely to sustain. This paper is a good read: www.ncbi.nlm.nih.gov/pmc/articles/PMC6189005/ And as for barefoot running being a sensible approach to sustainable running... come on! 🙈 As far as elite heel strikers are concerned, look up Shura Kitata :)
@@JamesDunne well in that paper is biased, author compared switching foot strike with general contusion risk factor. If done right and given enough time to strengthen tendons, general contusion risk is lower. Just do test from book, run barefoot on asphalt 1km and your body will choose what's best for you
