Sunday, December 13, 2009

Running Faster

There’s a good chance you can lower your running times by simply refining your running skills. Speed skill is so important to running that I have the athletes I coach do drills and other skill-enhancing workouts every week throughout the year. The skills that need mastering are simple and few.

Biomechanically, there are only two things you can do to run faster. You can run with a faster cadence or you can run with a longer stride. The fastest runners in the world, such as the Kenyans, do both of these. The place for you to start in improving your running efficiency is with cadence. Let’s examine how you can do that.

The next time you go to a race or watch one on TV check the cadence of a few select elite runners. To do this count every time a runner’s right foot strikes the road for 20 seconds and then multiply by three. The Kenyans are running at a cadence of 94 to 98 even late in a long race such as a marathon. The others generally have a cadence of 90 to 94. So the only way these lower-cadence runners can keep up with the Kenyans is to lengthen their strides. That’s inefficient because it produces a bit of vertical oscillation. They bounce up and down just a slight bit too much. And since the finish line is in a horizontal plane, energy expended vertically is mostly wasted.

Count your cadence the next time you are out for a run. If you’re like most age group triathletes it will be in the range of 76 to 86. And the slower an age grouper runs the lower their cadence becomes. Elite runners tend to keep their cadence about the same even when running slowly. They’ve trained their nervous systems to fire at a set rate which isn’t appreciably altered by pace.

Besides reducing vertical oscillation, running with a higher cadence means the foot spends less time in contact with the ground. That means running faster. Until your foot comes off the ground you aren’t going any place. It’s like an anchor.

So let’s work the other direction now – from foot contact time back up the chain to cadence – to see how we can improve your running times.


To minimize foot contact time you need to reduce the angle at which your foot comes in contact with the road surface. If you land on the heel with your toes pointing skyward at about a 30-degree angle, which is common for slower runners, it will take a relatively long time for the foot to be lowered to the pavement and then to rock forward and finally come off the ground at the toes. This will take only a few more milliseconds than had you put your foot down flat on the pavement and then toed off. But those extra milliseconds for each footstrike add up by the finish line.

It’s alright to have a slight heel-first contact with the road. But it should be so slight that someone you’re running at would not be able to see the bottoms of your shoes. You can check this for yourself by having that person shoot a video of you running at the camera. Do you see black soles? If so, you have an exaggerated heel strike. Minimizing it will speed you up.

How can you learn to minimize heel strike? Or, to put it another way, what causes you to land on your heel with your toes high off the ground? The answer to this latter question has to do with your knee. The only way to land on your heel is to lock, or nearly lock, your knee out straight. This is what you would do if you were running fast and trying to stop abruptly. You would straighten your knee and land on your heel. So running this way is like running with the brakes on. No wonder it slows you down.

The fastest way to experience flat-footed running is to run with your shoes off. Shoes with their often thick, rubber heels seem to be saying to us, “land here.” As soon as you take them off you’re back to the way our ancient ancestors ran on the grassy plains of Africa. We’re also running the way the Kenyan kids learn to run – without shoes.

I have the triathletes I coach do a drill called “strides” almost every week in the Base period. If they can do this without shoes, all the better. Often they can’t because snow and cold weather in a winter Base period make this impractical. But whenever they can they are encouraged to do this drill shoeless. This may be on a treadmill during the winter. Another option is to do this drill in “water walkers” – light, slipper-like shoes that fit snugly around the foot and are designed for the beach. (Be careful at first not to do a lot of barefoot running initially as you may well develop tender tendons as your feet and legs adapt.)

The strides drill is simple. Go to a park or other grassy area that has a very slight downhill grade of about one percent for 150 yards or so. Warm-up for 10 to 15 minutes. Then take off your shoes (or put on the water walkers) and run down the hill for 20 seconds. Do this six to eight times in a session. This should be a fairly fast run, but you could go much faster. In other words, hold back just a little bit. Focus on a flat-footed landing with the knee slightly bent. Count every time your right foot strikes the ground. Your goal is 30 to 32. That’s a cadence of 90 to 96. Don’t try to go above 96. Note a landmark where you completed the 20-second stride. If you start at the same spot for each stride, during the workout, as you warm up even more, you’ll finish farther down the course indicating that your stride is also getting longer since cadence remains steady. You’re now running like a Kenyan.

Now for the hard part of the drill – at least for most type-A triathletes: Turn and walk back to the start point. Fatigue is the enemy of skill development. Walking will make sure you aren’t fatiguing as the workout proceeds.

As your fitness improves you can insert drills into the walking portions. Start by doing skips as you did when you were a kid. Do 50 total skips on the recovery. This will further ingrain the flat-foot, slightly knee-bent landing. Later in the Base period do these skips for height. How high can you skip? Skipping for height builds power in your legs which in turn increases stride length – without even trying.

When out for your normal Base training runs occasionally check your cadence. Try to raise it by two or three RPM. This will feel awkward at first, as if you are running with baby steps. And your heart rate will probably rise even though you aren’t going any faster. It will take a while for your nervous system to adapt to a higher cadence. During this time you may seem to be going the wrong direction. That’s common and necessary if you are to eventually run faster as your body adapts. Hang in there.

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25 Comments:

At December 13, 2009 1:02 PM , Anonymous Anonymous said...

Great post!

/obi

 
At December 14, 2009 6:29 AM , Blogger Jim said...

Joe, I've used your training bible for several years and this is the first prep / base period where I have actually made the change to fore/mid foot running. The thing that actually got me over the top was using the video camera to make corrections until I got it about right. My knees don't hurt anymore (my calves do as I'm adjusting) and I'm running at a faster pace and a lower heart rate than I ever have.

Question: I can run for 90 minutes at a 90 cadence, now. Would you recommend continuing to improve cadence to as high as the Kenyans 96, or would you consider speed skills developed enough to move on toward focusing on endurance and force? If so, is 4x:20 strides during a Zone 2 run sufficient for mainteance each week?

 
At December 14, 2009 9:02 AM , Anonymous Shane84 said...

Do you think that running in racing flats or some minimalist shoe can prevent heel striking or help with a mid-foot strike?

 
At December 14, 2009 12:30 PM , Blogger Joe Friel said...

jim--90 rpm is good. Settle in there and adapt to it as you begin to include other abilities in your training. Good luck!

 
At December 14, 2009 12:31 PM , Blogger Joe Friel said...

shane84--Yes, it can. But it can also lead to injury. It sould be the sort of thing you work into gradually over many weeks if not months.

 
At December 14, 2009 2:32 PM , Anonymous Bart said...

Joe - Can you please shed a little light on proper skipping technique? Is it: jump forward from right foot to land on right foot, one step to left foot, then jump from left to land on left, one step back to right, repeat? Let them laugh, but I want to ensure proper form! Thanks!

 
At December 14, 2009 5:57 PM , Blogger Joe Friel said...

bart--Need to ask a 5 year old to show you. :) It's rt-rt/lt-lt/etc.

 
At December 14, 2009 7:42 PM , Anonymous Anonymous said...

What type/brand of "water walkers" work well for this? I've looked at Amazon for some possibilities, but there are quite a few to choose from.

 
At December 15, 2009 6:55 AM , Blogger Joe Friel said...

anon--I've only had experience with Nike's but mine are quite old. I'm sure thay have changed by now.

 
At December 15, 2009 2:28 PM , Anonymous Anonymous said...

http://kissenatrackracing.blogspot.com/

What are your thoughts on plyometric training to develop power as seen in article at above link?

 
At December 15, 2009 9:29 PM , Blogger Kendra said...

Any idea how the strides per minute on an elliptical machine converts to strides per minute while running? Switched to the elliptical this morning to ease up some running aches and noticed the stride counter and remembered this post.

 
At December 16, 2009 6:34 AM , Blogger Joe Friel said...

anon--I use plyo with the athletes I coach. It's a high risk-reward workout. So have to build it in cautiouslay, esp with runners who probably stabd to gain the most from it. See further comments here: http://www.trainingbible.com/joesblog/2007/02/plyometrics-research.html

 
At December 16, 2009 6:47 AM , Blogger Joe Friel said...

kendra--Gosh, I don't. Never seen any research on ellipticals as related to running. And have no experience with them. Sorry I can't be more helpful here.

 
At December 16, 2009 3:13 PM , Anonymous Anonymous said...

If you are looking for some good minimalist shoes for running check out Vibram 5 fingers.

http://www.vibramfivefingers.com/indexNA.cfm

Comfortable fit, protection for the bottom of your foot, but no support/cushion so you are still "barefooting".

 
At December 16, 2009 3:31 PM , Blogger Fe-lady said...

Great article..but most 5 year olds really don't know how to skip.
Ask a seven to eight year old...female.
:-)
Happy running!

 
At December 21, 2009 5:59 AM , Blogger Andrushka said...

Joe, I've tried high cadence running for a month. The result is that HR is 10-15 bpm higher with high cadence. The lower cadence - the lower HR.

It seems like an immutable law of running!

Of course, 5 min per km differs form 3 min per km. I guess my cadence at 5 min per km is 75 and 90 at 3 min per km.

Why do you think that cadence must be a constant value at any speed? Running form changes, so must do cadence.

Do you have proven data that HR lowers after a couple of month of high-cadence running? (And becomes lower than HR at the same speed with low cadence?)

 
At December 21, 2009 6:47 AM , Blogger Joe Friel said...

andrushka--Lots of questions. Let me just summarize by saying it's all experiential. What I've observed in 30 years of working with runners of all abilities.

 
At January 4, 2010 11:17 AM , Anonymous Dale said...

Where can you find a audible cadence chirp that is waterproof to clip on your goggles, helmet and run with...that you mention in your book. I have been all over the internet and can't find one yet. I am a beginner - I did 3 sprints this fall and got your books for Christmas. Thanks for the help.

 
At January 4, 2010 3:48 PM , Blogger Joe Friel said...

Dale--Try here... http://www.trinowfitness.com/en/Finis-Tempo-Trainer.html

 
At January 25, 2010 7:34 AM , Blogger Michael said...

Hi Joe,

Great post! I've had the bible for years I just got Going Long for Christmas. All great books that I refer to very, very often.

One quick question on cadence: I find it quite difficult to maintain a 92-94rpm while doing my base runs (1.5hr+) at EZ 5:10/km pace. I feel like I'm intentionally shortening my stride (almost a "running on the spot" form) to keep the pace at EZ.

Any practical suggestion on keeping cadence high but pace low for those long, EZ runs?

Thanks and thanks a bunch for all your great work!

 
At January 25, 2010 9:59 AM , Blogger Joe Friel said...

michael--Don't try to _fix_ your cadence in a single workout. This will take weeks if not months or years to acheive. Strive for becoming comfortable 1-2 RPM higher than normal within 4 weeks. Then start over again with higher numbers.

 
At January 25, 2010 10:48 AM , Blogger Andrew said...

Joe --

Great article. Does the theoretical optimal cadence differ for taller runners? I'm 6'2" and seem to max out near 88 rpm. Thanks.

 
At January 25, 2010 2:05 PM , Blogger Joe Friel said...

Andrew--It could be an issue. I've seen no research on that. Great runners are not very tall, it seems.

 
At March 29, 2010 4:33 PM , Anonymous David said...

Just started experiments with cadence. It leaves my gastrocs quite sore. And hamstrings. Is this expected? Interesting, quads not sore.

 
At March 30, 2010 6:57 AM , Blogger Joe Friel said...

avid--You're robably getting more midsole to forefoot strike which loads the calves. That's eventually good fo you but it my tke weeks if not monthsto fully adapt. n temn time be conservative with how much timeis devotedto such technique.

 

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