Does arch height really matter when running?
Although high arches and flat feet exist at elite levels of all running distances, higher arches tend to be found more in distance runners and flatter feet are more common with sprinters. For the rest of us, the good news is that the body can adapt to any foot type if the training program builds gradually enough for the individual.
Beyond Cadence – Finishing school for your running mechanics
Running – Beyond Cadence
Cadence: Although some variation of footstrike frequency among runners is necessary based on speed and physical characteristics of individual runners, typically a cadence near 180 (170-190)is considered ideal. This higher cadence of efficient runners can be beneficial because it is associated with less up and down (excess vertical motion), less over striding, less excessive heel strike, less impact peaks, better momentum regarding a more circular and smooth foot flight path, quicker ground contact time and better elastic recoil of passive tissues.
Beyond Cadence: Since running on the spot or even spastic dancing (my style) can produce a cadence of 180-ish steps/minute, how do we run FORWARD and minimize vertical, rotational and lateral energy leaks and inefficiencies?
We use to think that flexibility and strength would help take care of the biomechanics deficiencies/weaknesses, but research is challenging that concept. A recent study by Willy and Davis, 2011 found here studied subjects with abnormal hip adduction and internal rotation when running (associated with runner’s knee – patellofemoral pain syndrome and other injuries). Over 6 weeks, they improved hip strength and single leg squat strength and mechanics significantly over control groups but these strength improvements did NOT change running mechanics. This result is not what they expected.
Below, I have outlined some of the most common causes of inefficiencies in the vertical, rotational and lateral directions and how to translate improved (or adequate) flexibility and/or strength into better running mechanics with GAIT RETRAINING(GR).
Note: Please make any changes slowly and gradually and reduce/stop if more discomfort/pain occurs. Some runners may have structural limitations that make gait retraining difficult or not recommended. Always use discomfort and pain as your guide, regardless of recommendations/advice here or anyone. Discomfort/pain should decrease, not increase (beyond slight and expected muscle soreness) with any changes in gait.
Vertical excess: Inflexibility and calf overuse can abruptly transition smooth forward momentum into the vertical direction.
Strength/flexibility limitations – tight hip flexors (iliopsoas and rectus femoris) and soleus(deeper, lower calf muscle)/achilles. Stretch these muscle groups. Strengthen glutes (lunges, squats, glute bridges) to replace some of the calf overuse.
Gait Retraining (GR):
a) land more softly with less sound
b) squeeze your glutes to get better forward propulsion
c) run tall but sink slightly into your legs
d) don’t push off (as much) at the back of your stride
Rotational excess: A weak core especially in rotation can cause the force of the legs to ‘rag doll’ the upper body into excessive rotation.
Strength/flexibility: tight hip flexors (iliopsoas mostly) can pull the lower back and torso to the side of the extending leg leading to excessive rotation.
Gait Retraining (GR):
a) Try not to let your arms cross the mid line of your upper body
b) Try to toe-off from your first (big toe) and second toe directly behind you (rather than letting your foot leave the ground through the path of least resistance from you shorter outer toes/foot)
Lateral excess: Weak glutes (max, med. and min.) weakness can lead to numerous pains and injuries locally at the hip as well as the knee, ITBand and lower leg.
Strength/flexibility:
Squats – double and single leg, quick drop partial squats, hip abductors exercises (clam shells, side-lying leg lifts), glute bridges, various lunges and crossover (grapevine) drills, lateral planks
Gait Retraining (GR):
a) try squeezing your glutes when you run (i.e. hips slightly forward if tightness in the hip flexors allows) – this also helps with vertical excess
b) look in the mirror on a treadmill and try to reduce the opposite hip from dropping on footstrike
In summary, general strength training, flexibility and running drills are beneficial, but to improve running mechanics directly, focusing on the above GR tips during running is key. Even if you are not injured these general guideline should improve the efficiency of all runners.
Gait Analysis
If you are not sure where your energy leaks or imbalances exist when running and are interested in an extremely slow motion gait analysis filmed outdoors from front, back, uphill, downhill and side angles followed by a review of the recording and any stretching, strengthening and gait retraining necessary upon follow-up, please let me know. More info at: http://draaroncase.com/runninganalysis - (may be covered by extended health under Chiropractor – my profession).
I hope this helps, Aaron
NY City Marathon’s new registration rules
The NY city marathon has changed the rules of application and registration for 2012. I was initially excited because I was hoping the change was a shortening the marathon distance.
These changes will make it harder for some runners who are/were hoping to qualify with a previous 1/2 or full marathon time, but should be easier for everyone else as the lottery should have more spots available.
Find the new rules here.
Run 60 Ft with Ryan Hall
Watch kids and people run alongside a video screen of olympic marathoner Ryan Hall. Great to see his average running speed is faster than the sprint of most people. Ryan Hall shows up too.
Step right up! 1000 Calories (kcal) burned every hour!
Really? Regardless of your fitness levels, age, aerobic capacity, lactate tolerance, hormone balance, weight, experience or injury history? I disagree.
Only if you are extremely fit AND very experienced in any given type of exercise, do you have any chance of even surviving a 1000 kcal/hr workout.
Then why would anyone make these claims? What they might be trying to say is that maybe after weeks, months or years (or never) of training might you be fit and experienced enough to burn 1000 kcal/per hour. Unfortunately, people want results quickly and my explanation does not make for great marketing, just decent blogging.
Let’s take running for example. It is relatively common knowledge that approximately 1 mile of running (or walking) will burn about 100 kcal regardless of speed (for the most part). Therefore, you would need to run 10 miles/hr or 16 km/hour for one hour to get to 1000 kcal. This is very hard to do. Even if you have inefficient technique, you may be burn more calories for any given pace, but your pace will drop and you will still not be able to tap into the fat/fuel burning potential that fitness and experience provide.
It would take approximately 2.5 hours of brisk walking at 4 miles/hour to burn the same 1000 kcal.
Running doesn’t use the upper body much, you might say. So let’s try the rowing machine which uses almost all of the major muscle groups repeatedly. Try maintaining a 2:00 minute/500 meter pace for a full hour (equivalent of approx. 1000 kcal/hour) on a rowing machine. Actually, please don’t try it right away. Your back would likely snap like a twig without the fitness or rowing experience.
In summary, calorie burn has less to do with the type of exercise that you are doing as long as large muscle groups are worked repeatedly. Calorie burn has more to do with your current state of fitness, health and experience. The more you enjoy the exercise, the more you will do it and the more intensely you can do it and the more your calorie burn/metabolism will increase and even extend into hours after you complete the exercise. So please do what you enjoy, even if it is trying new exercises that burn 1 million billion kcal/hour.
September eNewsletter: Why do I feel so stiff post-run?
To read more about why your legs feel stiff if you have run further or faster than usual and to learn about micro tears, please click here for more information.
Cool Video of 40K+ Marathoners in New York Last Week
From Gizmodo:
Watch 40,000 Marathon Runners Invade New York City
Check this great video of 40K+ marathoners during the New York Marathon last week. The camera, set up by the MTA, is on a perfect vantage point to capture the horde as they cross the Verrazano-Narrows Bridge. I can almost make out the chilean miner and his two ice packs strapped to his knees.
NYTimes.com: How Elite Athletes Push Beyond Their Pain Threshold
From the New York Times
How to Push Past the Pain, as the Champions Do
By GINA KOLATA Published: October 18, 2010
One trick is to try a course before racing it. In one study, Dr. Swart told trained cyclists to ride as hard as they could over a 40-kilometer course. The more familiar they got with the course, the faster they rode, even though — to their minds — it felt as if they were putting out maximal effort on every attempt.
Then Dr. Swart and his colleagues asked the cyclists to ride the course with all-out effort, but withheld information about how far they’d gone and how far they had to go. Subconsciously, the cyclists held back the most in this attempt, leaving some energy in reserve.
That is why elite runners will examine a course, running it before they race it. That is why Lance Armstrong trained for the grueling Tour de France stage on l’Alpe d’Huez by riding up the mountain over and over again.
Interview with Ultra Marathon Runner Andrew Hedgman
From InsiderTalk.com
If you always wondered how ultra marathoners run such longs distances, how to become an ultra marathon runner and what is this all about – jump in, Andrew Hedgman is going to tell you everything about it. He completed a run across both islands of New Zealand in just 28 days, doing around 50 miles a day, so he knows what he’s talking about. He’s really passionate and persistent about running and if you ever struggled to learn how to get things done, I think you should really listen to this interview.
Move faster with light, quick steps
Improve your running and reduce the risk of injury by adjusting your cadence
How can adjusting your cadence improve your running?
Cadence refers to leg turnover, or how many times in one minute that your feet strike the ground.
Most elite runners have a cadence that’s very close to 180 steps per minute, regardless of their height or finishing position. Most less experienced runners have a cadence that’s closer to 150 to 160 steps per minute.
For non-elite runners, there may be benefits to increasing our cadence to approximately 180 steps per minute. More
Fuel Up for Running and Weight Control
The following article explains the whys, whens and whats of eating before and after a run for both weight control and performance.
Ten years ago, I was 35 lbs over weight and it took me 2-3 years of running to improve my performance and control my weight. The main reason it took me so long was because I did not eat enough before, during and after my runs, especially my longer runs. More
Latest News
October 25, 2010A more rigorous approach to calculating just how much carbohydrate a runner needs to fuel him or herself through 26.2 miles.