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goal of eliminating the overstride
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Finally, Alex Adidas Ultra Boost DonneHutchinson at Sweat Science wrote two posts on the stride rate-stride length topic (here and here), and he also points to data that speed increases can come about by manipulating either stride rate or Nike Air Max 2017 Mujer stride length. I sent Alex a paper (Weyand et al., 2000) I had just read on the topic, and he posted a graph (see above right) from that paper showing that initial increases in speed seem to occur more-so by manipulating stride length, whereas achieving top speed seems to involve increases in stride rate once stride length levels out. Alex also posted an informative interview with Max Donelan of Simon Fraser University, who stated that stride rate is often correlated with an increase in stride length based on his observations while conducting research to develop a device that uses sound cues to manipulate running stride rate. This seems Nike Air Max 90 Hombre Negro somewhat counterintuitive given that the goal of increasing cadence is typically stated as being to shorten stride – I’ll explain why this isn’t exactly a correct way to think about this in more detail below.In an attempt to summarize all of this great Nike Air Vapormax Mujer discussion, I’d like to add some of my own additional comments and observations. Here goes:Recent discussions of cadence/stride rate and the “magic” 180 number have mainly focused on the role of increasing cadence as a means to reduce injury risk.  Why is this important?“Why is everyone in a rage over increasing stride rate? Because as I’ve pointed out before, most recreational runners simply overstride, which artificially creates a very low stride rate. Why? Because the foot lands so far out in front of the Center of Mass that it takes a while for your body to be over it and ready to Nike Air Max TN Mujer push off. So, when some running form coach says to increase stride rate to X, what ends up happening is the runner is trying so hard to increase stride rate, he chops his stride a bunch by putting his foot down earlier and landing closer to his center of mass, thus decreasing the overstriding. Nothing particularly wrong with that.Where we go wrong is Adidas Superstar Femme in the logic that the stride rate increase is the key. No, it’s not. It’s the elimination of the overstriding. Using the cue to increase stride rate is a way for coaches/runners to reduce the heel striking overstride.”The point that Steve is trying to make is that overstriding is the evil we are trying to correct by manipulating cadence. In other words, increasing cadence is not the goal in and of itself, rather, it is a means to achieve the goal of eliminating the overstride. What is Nike Air Max 270 Damen overstriding? Defined simply, it is running in such a way that you reach forward with the lower leg and land heavily on the heel (usually) with an extended knee. The four images below all show overstriding in runners recorded at the 10K mark of the 2009 Manchester City Marathon – all four depict the exact moment of first contact between the foot and the ground.What we ultimately want is to avoid reaching out with the lower leg, and by doing so thus prevent landing on the heel with an extended knee. Ryan Hall from the 17.5 mile mark of the 2010 Boston Nike Air Max 90 Hombre Marathon provides a good example of a non-overstriding gait with a midfoot landing, a bent knee at contact, and a more-or-less vertical lower leg:Current thinking is that increasing cadence helps to reduce overstriding because it forces you to put the foot down faster and closer to the Adidas NMD Dames center of gravity.  Amby also discusses this in his post, saying “Dicharry believes load-rate is important, but not necessarily footstrike. Nike Air Presto Mujer He simply wants runners to be wary of overstriding, i.e., running with a low stride rate that results in placing the foot ahead of the center of mass.Nike Air Max 270 Mujer ” In other words, reaching with the leg is bad, and increasing cadence can help us avoid doing that. Let me repeat – overstriding is what we are trying to prevent by manipulating cadence. If you don’t overstride, manipulating cadence might not be wise or necessary.Regarding the observation mentioned above from Max Donelan that increased stride rate is usually correlated with increased stride length, my guess is that increased length might be due to greater hip extension on the back side rather than by reaching out front when we up cadence. I may need to get my camera fired up in order to experiment with this hypothesis – more reason for my neighbors to think I’m nuts!
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