Saturday, February 19, 2011

09 Spyder Electra Triggers

running style, stride frequency and co: the last word?

were determined in the past week, the sports science reports and discussions of two issues: Firstly from the comedy barn around the cycling doping case and acquittal A. Contador of . Second, accumulated in the relevant blog - by chance - contributions and debates on a topic that has become a perennial (?): What running technique is the cheapest? What are the most effective step frequency?

The issue I raised last year with a contribution to barefoot . It was also about running technique. Illuminating Related misunderstood topic I've found this week at 3 U.S. authors. This I would like to refer directly. Because I am in poor health a bit, I lead you to the original sources and waive a detailed Comment. These are the articles:
starting point is the blog post of the biomechanical Jay Dicharry from the University of Virginia . He treats the context of running style (front, center, rear foot movement) and ground reaction forces . It is commonly claimed that generated pre-and mid-foot running at the lowest landing, the force peaks and the orthopedic health is most conducive.

His research shows, however, that do not depend on the amount of force peaks of the running technique, but primarily from the position of the landing foot relative to the gravity . So there are rearfoot runners where a very thin ground reaction forces are measured, and forefoot striker with high values. He also points out that exercise upper body posture and muscle tension a significant influence on the ratio of gravity / foot position. In brief: A selected drive technology is neither good nor bad. There are some elite runners who run on the back foot (in the highest speeds) - and the efficient and injury free.

Runners World writer Amby Burfoot takes up the theme and extends it to the aspect of "cadence". run beginners are distinguished in that they are more low stride frequency select position (relative to the absolute speed) and the landing foot far forward (which leads to high ground reaction forces). A countermeasure is to increase the step frequency or barefoot. The steps are smaller, the foot automatically lands closer to the center of gravity. What in this respect (un) is reasonable, he describes quite calmly. Also what findings in elite runners, and developments in running market is concerned.

The third member is a sports scientist Steve Magness. He reaches his hand back on both previous articles and is the sense of a step on the frequency alone directed training in question. Do we ever focus on the cadence? Previously, he gives an overview of the kinematic relations, derived from video recordings.

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