RESULTS: Shoe-time Nike Free 5.0 cheap sale interactions were not found for any of the variables of interest. Minimalist shoe running resulted in no changes in step length (P = 0.967) or in step rate (P = 0.230). At footstrike, greater knee flexion (P = 0.001) and greater dorsiflexion angle (P = 0.025) were noted in the minimalist shoe. Vertical impact peak (P = 0.017) and average vertical loading rate (P < 0.000) were greater during minimalist shoe running. There were main effects of time as dorsiflexion angle decreased (P = 0.035), foot inclination at footstrike decreased (P = 0.048), and knee flexion at footstrike increased (P = 0.002), yet the vertical impact peak (P = 0.002) and average vertical loading rate (P < 0.000) increased.
Update 3/09/2010: You can check out this post for details on the 2010 Nike Free models. You can still find the Free at fairly reasonable prices on Amazon.com ¨C Search for Nike Free Shoes on Amazon.comUpdate 12/5/09: I recently shot some slow motion video of myself running in the Nike Free 3.0¡¯s. You can view it below.
So where did I go wrong today? Well, by simulating barefoot running, the Free¡¯s work Nike Air Max 2015 uk your feet and legs in ways that more traditional running shoes do not. Thus, it¡¯s recommended that you ease your way into using them so that you don¡¯t overwork muscles that have been long dormant when wrapped up in bulky trainers. The fact that I ran a fast 7-miler in them 2 days ago suggested that I might not have this problem, so I decided to take them out on my 20-mile run this afternoon (big mistake!). The first ten or so miles were fantastic ¨C I felt great, and they really do make you think about your stride and form. While they are well-cushioned and a long ways from true ¡°barefoot running¡± (you need something like the Vibram Fivefingers for that), they definitely feel a lot different than any other shoe I¡¯ve run in. After about mile 10, I started to notice some soreness beginning to creep into my legs in unusual places, and I began to form a blister on my right big toe (I think this was a sock issue and not shoe issue though). By mile 12, my legs were quite fatigued, and I began to question whether I would make it for the full 20. I decided to persevere, and didn¡¯t worry about pacing or walk breaks from that point on (and there were many walk breaks).
Weight. Again per Running Warehouse, in men¡¯s size 9 the Free 5.0 weighs 8.2oz, the 3.0 weighs 7.2oz. Not a huge difference and barely noticeable to me.Forefoot Fit. The 5.0 has a roomier forefoot in terms of width across the ball of the foot, but the forefoot feels a bit shallower from top to bottom and the upper material has Nike Free uk online sale a bit less give. I prefer the shape of the 5.0, but the upper material of the 3.0. Maybe I need to make a hybrid shoe via Nike ID?
The Nike Free 5.0+ is the new name for what used to be called the Free Run+, which went through 3 iterations before they changed the name. The three main shoes in the Free running line are thus now the 3.0, 4.0, and 5.0, and the numbers essentially signify a scale from more minimal to less minimal. I reviewed the Free 3. Nike Air Max 90 uk sale 0 v5 last year, but have not tried the 4.0 yet.