2005 Ford V10 Supercharger

CLIMBING IS MORE BENEFICIAL TO RUN BAREFOOT

Maybe something happens unnoticed, but the study is very interesting. A study recently published in the Journal of the American Academy of Physical Medicine and Rehabilitation suggests that the shoes used by athletes to run should change its current design . Thus, according to the authors of the letter, may decrease the rate of discomfort in the knees that suffer a significant percentage of runners.

Scientists from the universities of Virginia and Colorado, USA, together with experts from the company JKM Technologies, have shown that rotational forces generated on the knees and hips when running on a treadmill with the typical shoes Sports are different, and especially higher-than those that are created when it barefoot or with socks only.

In fact, researchers, after comparing their results, have been hypothesized that the increase of these forces joint rotation can contribute to musculoskeletal injuries often causing painful symptoms in habitual runners.

The data were obtained from an experiment conducted with 68 healthy, active people (37 women and 31 men with a mean age of 34 years) ran about 25 miles a week . In the experiment, each of them did on a treadmill specially designed for measuring the kinetics of the year at a rate of 11 kilometers per hour.

Initially used a standard shoe, similar to that generally used by most public- semi-curved shape, hydraulic damping and 13 mm heel height difference between the rear and forefoot.

In a second time, so that each participant became their own control-ran the same distance, but walk discovered. Everyone 16 special sensors placed on specific points distributed in the pelvis, thighs, knees, lower legs, the second metatarsal head and heels. Then through a specially designed software for research, were captured in three dimensions every movement of the subject and obtained the values \u200b\u200bof kinetic forces acting on the joints of the lower limbs. In this way they could assess differences in the measurements obtained in two situations: running with shoes and without it. Results



rotational forces in all three joints studied were significantly higher when wearing shoes than when running only socks. " note that footwear was a 36% increase in the rotational force on knee flexion, and that possibly increases the tension on the patellar tendon," say the authors in their writing.

"We think this detail, coupled with a 38% increase in the rotational force of the knee, it implies higher compression in tibiofemoral compartment. And do not forget that there are also increases in internal rotation of the hip. Both can have clinical implications, "the researchers add.

However, the document is not implied that running barefoot is better to use the sneakers. What the experts are asking is whether it would be unreasonable rethink the design of some sneakers, taking into account these variables in the same way that has made the damping of the tread.

Footwear middle distance runner is designed to lessen the force of the impact in the heel and to control foot pronation. However, no scientific evidence that supports this type of design is best for the long-term joint health of its users. In fact, the incidence of knee problems corridors has not changed significantly with advances in the form and quality of the shoe, while the damping achieved in the tapes of the art fitness centers do seem to have made profits.

In any case, the authors, who insist that the methods used in research are the most technologically pointers that exist today, confess that they have lacked analyze other characteristics of gait that would help to better evaluate the differences in the rotational force of individual involved in the race.

Although much has been made of the role of repetitive loading on cartilage degeneration of the knee, has not been explained well the role of rotational forces on the joint.

Furthermore, some comments prodecentes various internet blogs scattered warn of conflict of interest that can be in one of the scientists involved in research. One of them has a stake in a company that in turn has a large department which investigates the design many types of footwear.

Source: World Health