Nike Vapor Fly update
Nike Vapor Fly 4% update... Wired has an interesting follow up....see https://www.wired.com/story/do-nike-zoom-vaporfly-make-you-run-faster/ Additional research/statistical analysis from George Wu , a researcher who has written several academic studies of runners presents the following data analysis (see below) showing marathon runners experienced a less significant slow down between the first half and second half of their race when wearing Nike Vapor 4% shoes giving them an advantage of approximately 4.46 minutes (less time lost than runners in other shoes). Now this study may be confounded sampling bias that is by better runners wearing Nike Vapor 4% shoes (or a placebo effect of running in the latest Nike shoes) but the data is in line with a possible 4% improvement in running economy. That is somewhere around 10 seconds a mile or 15 Watts to most regular runners. I ordered a pair today and will update th...