Stride frequency is one of the most important parameters of running technique. Why is stride frequency so important? Why do we pay so much attention to this running parameter?
The frequency of our strides in running is really nothing more than the rate at which we change support from one foot to the next. When we change support, we start free falling and let the force of gravity accelerate us forward.
Acceleration due to gravity is a constant, but our ability to take full advantage of gravity’s pull is a function of our body lean and our stride cadence. If you lean forward and don’t move your foot to create a new point of support, you will quickly find yourself face first on the ground. Lean very slightly and you can move your foot slowly to prevent hitting the ground. You’re still falling forward – you’re just not falling down. Lean more and you have to move your feet faster to avoid hitting the ground with your face.
The faster we change support, the less we do to interrupt the gravitational pull and the faster we run. Even better, the less we do to counteract gravity, the less load we place on joints, ligaments and tendons, which in turn reduces our chance of injury. It really is that simple.
The faster we run the higher is the stride frequency. The fastest 10K runners, for example Haile Gebrselassie or Kenenisa Bekele, in a final lap could run with up to 240 steps per minute, while fastest sprinters like Usain Bolt or Tyson Gay are way above 280.
The magic number
So what is the minimum number or maximum number are we talking about? The answer for maximum is quite obvious – the higher the better. If you can go 200+ more power to you.
The lowest number recommended, however, is 180 and the idea behind it comes from research conducted back in the 60s. Such or higher level of frequency allows to use the elastic property of our muscles which doesn’t ‘activate’ until you reach 180. It was shown by same scientific research that usage of elastic properties of muscles reduces oxygen consumption around 20% and increases efficiency up to 50%.
A recently conducted research concluded “increases in step rate can substantially reduce the loading to the hip and knee joints during running and may prove beneficial in the prevention and treatment of common running-related injuries.”
Learn and practice it
So the benefits are right there, but how do we learn it? First we need to understand and learn to perform stride frequency as a part of running and that it serves the process of falling forward. We couldn’t move forward if we were to just pull the foot from the ground, we need to lean forward first. So lean first, pull the foot from the ground second.
Then we need to learn to pull the feet from the ground, and concentrate the efforts on feet only, not the legs, just feet. And learn to use hamstrings.
You can find a whole list of exercise for that in the Pose Running book and the video series. You can use downhill running with slight inclination. Run with the partner’s slight push on your back with his/her hand or pull with the elastic bands.
It is very helpful to use a metronome-like device to help you maintain the appropriate pace. And as you progress you can move the speed up to continue your development process.
This is the topic where the importance of strength training for runners becomes apparent again. While it true that running itself does develop some of the strength necessary, to fully take advantage of what’s already on offer by nature, a bit of effort is required on our part to bring it all together. Specialized strength training doesn’t take much but will give plenty in return.
It is important to remember, however, that high stride frequency does not demand a huge muscular effort. On the contrary, you should avoid unnecessary effort and tension. Improved strength of your muscle systems will allow you to quicken your movements and reduce the amount of time you actually spend on support, the faster you pick your foot off the ground, the faster you will run.
Read about stride frequency in greater detail in “The Pose Method of Running”.
- Effects of step rate manipulation on joint mechanics during running. Bryan C Heiderscheit, Elizabeth S Chumanov, Max P Michalski, Christa M Wille, Michael B Ryan; Medicine and science in sports and exercise 02/2011; 43(2):296-302
- Alexander, A.M., 1988, Springs as energy stores: running. Elastic mechanisms in animal movement. Cambridge, Cambridge University Press, pp. 31-50.
- Cavagna, G.A., Saibene, F.P. and Margaria, R., 1964, Mechanical work in running, J. Appl. Physiol., 19:249-256
- Cavagna, G.A., 1977, Storage and utilization of elastic energy in skeletal muscle. Exercise and Sport Science Reviews, 5, 89-129.
- Cavagna, P.R., La Fortune M.A., 1980, Ground reaction forces in distance running, J. Biomech, 13:397-406.
Next week: Muscle elasticity