Adidas Adios Adidas Superstar Ii Homme Pas Cher 2 SideAdidas Adios 2 Medial---Adidas Adios 2 Sole---I opened this review with a quote from the soon-to-be-released book Running With the Kenyans by Anharanand Finn. I¡¯m only about 100 pages into the book (it¡¯s fantastic so far ¨C you can pre-order it from Amazon if you are interested), and he writes a bit about running form and footwear (Finn made a transition to barefoot-style form just prior to moving to Iten, Kenya for six months with his family). One of the things that surprised him is that despite stories of Kenyans running barefoot, most of the high level adult runners train in big, cushy footwear. Yet, he observes, they retain barefoot-style form (presumably learned through significant barefoot running in childhood).

Results indicated that in both treadmill and overground running the subjects were slightly more economical in the shoes with the Boost midsole (differences were statistically significant). Here are the numbers: O2 Consumption ,O2 adidas-zx-fr.top Consumption, EVA Shoe, BOOST Shoe,% Difference,Treadmill, 44.7 ml/kg/min, 44.3 ml/kg/min ,0.9% ,Overground ,40.7 ml/kg/min , 40.3 ml/kg/min, 1.1%.

In terms of weight, the Hagio comes in at just over 6oz, so definitely in the lightweight category, though not quite as feather-like as the sub-4oz Mizuno Universe. This is definitely a shoe built for running fast, but my early experience with them leads me to believe that they might hold up for longer distance races as well. My longest run in them so far is 8.5 miles, and I felt no unusual fatigue or soreness. I could easily see running a half marathon in these shoes, and might even consider a marathon with a proper amount of acclimation.

A couple of other upper differences worth mentioning. First, it¡¯s hard to say for sure, but it feels like the heel counter in v2 may be a bit stiffer and rise a bit higher than that in v1. Also, the tab behind the Achilles tendon does not extend up as high in v2 (see photo above).

I was very skeptical of this marketing approach since there was no physiological data available from actual runners to back up the claims based on mechanical testing. That data now appears to exist. In the June 2013 issu Adidas Originals France Soldes e of Footwear Science is an abstract of a study titled ¡°Running shoe cushioning properties can influence oxygen consumption.¡± The study was carried out by a team from the University of Calgary headed by Jay Worobets.

The biggest change adidas made to the XT 5 outsole from v4 was that they significantly reduced the lug depth for v5. I think this was a good call as it makes the shoe run much closer to its road counterparts than the older XT models. It has sufficient traction for technical terrain, but i Adidas Originals Pas Cher t handles hardpack great and even runs ok on the road.