RUNNING SPEED = STRIDE RATE X STRIDE LENGTH

Thanks! I’m standing by for more great tips!

I'll give you a hot tip.

Didn't you learn in middle school to CITE YOUR SOURCES.

THIS IS PLAGIARISM.

Provide references. Holy moly what a JV move.

Is this that Jason Karp guy that’s a ways self promoting?

rcjason wrote:

To get faster, one or both components of the stride must increase. However, because stride rate and stride length are inversely proportional (as one increases, the other decreases), running speed can only increase if an increase in stride length is not accompanied by a similar decrease in stride rate or vice versa.

Nope. They need be proportional only if you want to keep the speed constant.

For example, if you're going 3 strides/second and covering 1.5 meters per stride, or 4.5 meters per second, you can increase to 6 m/s merely by increasing stride length to 2 m. However, this looks more like simply speeding up to 6m/s, at which point your stride length is automatically farther, than lunging forward or overstriding. A lot elites do this at a brisk trot.

Yes. He's always posting stupid stuff like this in every group remotely related to runners.

DISTANCE = RATE x TIME

PV = NRT

E=MC^2

PAY ATTENTION PEOPLE

I AM JASON KARP

[quote]rcjason wrote:

Research has shown that.../quote]

Good reading. Nothing really new, but good though. If you could only cite the source there. It would get better.

Ok, rcjason, you are stating the basics here.

Now tell us something useful, like how to select the right footwear materials to synch with or match the muscular contractions, so that those milliseconds of contact time are well spent, and not dampened by squishy non responsive foam, or bouncier 'rubber' soles, or carbon "springs". Or, how to select proper footwear to help you run efficiently when you are just a slow hobby jogger, when the above considerations are of no consequence?

Power per kilogram of bodyweight. Strength work, running more and running fast, sometimes up hills, works.

/thread

For most runners I disagree with your premise that increasing stride rate will decrease stride length. I also believe that telling many runners that they need to increase their stride length is dangerous without including a proper explanation.

Most runners who are either new to the sport or not in good shape have stride rates that are too slow. Their feet spend too much time on the ground. Decreasing ground contact time will increase the stride rate. This also increases force production which will help to propel the body forward with each stride, thus also increasing stride length. Of course biomechanics are a factor here too, so athletes want to make sure that they are not propelling themselves too far up, but if posture is maintained and the foot is landing underneath the center of gravity, shorter ground contact time could easily result in a faster stride rate and a longer stride.

When you tell an athlete to increase his or her stride length, he or she will interpret that to mean taking longer steps, which will likely lead to overstriding. So scientifically you are right, but without some explanation it is a bad cue.

It's a very old thread, but since it was bumped anyway I'll agree with this guy.

Cadence is something runners can influence themselves - if someone is trying to run at higher cadence, he will run at higher cadence.

Improvements in stride length usually come with an increase in fitness/cardiovascular capacity. Focusing on more stride length (and lowering cadence for it) is playing with fire, since impact forces are much higher even if there is no overstriding. This often leads to shin splints. The advantage of higher stride length is that it feels easier aerobically, but it's a trade-off which places more demands on the working muscles, tendons, and ligaments that increases injury risk.

I would just say, run a high enough cadence so run smooth and reduce impact forces, and let stride length progress as you get fitter.

The same thing is true for cycling - big gears, low cadence = heavy use of muscles, high cadence = more taxing on cardiovascular system. That's why runners should mostly use high cadence when cycling.