The definition of overpronation receives a lot of controversy in running and sports medical communities and there's a quite a bit of confusion and hype about that. Pronation is actually a normal movement where the rearfoot rolls inwards along with the arch of the foot flattens. We require this movement for normal biomechanics. Overpronation is when there is too much of this motion. The dilemma is that there isn't a agreement about what is normal and what's too much. The reason why it is important is that often overpronation has long been in principle linked to a huge variety of excessive use injuries in runners. As there is a shortage of evidence as to exactly what is normal, the literature is often rather perplexing on this. Quite a few studies have shown that overpronation, no matter how you decide to define this, is a risk factor for injury. Additional scientific studies have shown that it’s not a risk factor.
In the past running footwear were used based on how much the foot pronated. Those who overpronated would have a running shoe that was meant to stop that abnormal motion. Runners that had more normally aligned feet would've been sold a more neutral running footwear. Runners with a lot of the reverse motion might have been given running footwear with increased shock reduction. While this is still widely used inside the running shoe industry, the published research evidence does not support this approach.
If you have a number of scientific studies on a subject that seem to be contradictory and perplexing then scientists like to do systematic reviews and a metaanalysis that is meant to be a cautious review of all of the research without having any systematic bias. Just the better studies should be as part of the analysis that could give more weight to the standard of the study. If these analyses are done about the subject of overpronation in athletes then they commonly conclude that, yes, overpronation is really a risk factor for a running injury in runners, however it is only a modest risk factor. It's still statistically significant. These outcomes additionally suggest that there are many other factors rather than overpronation which can be a risk for a running injury.
This definitely does leave the whole concept marked by controversy with lots of uncertainty. Overpronation is a modest risk factor for a running injury, even so the suggesting of running shoes depending on pronation just isn't supported. This really is complicated for health care professionals in terms of simply how much emphasis do they put on the overpronation in terms of the managing of a overuse injury or should they place more emphasis on the other factors. With the athletic shoes stores must they carry on and promote running footwear depending on the pronation paradigm? It's still the most frequently used framework and runners find out about this within their running mags and they do count on it. Usually athletes usually do not care exactly what the scientific research says. They simply have to get much better from their a running injury and so they just want running footwear which enables them to run better and is more comfortable. Far more investigation really should be done on this plus much more training is needed on the theory.