ELITETRACK Forum

Parabolic Equation/Formula

2008-11-11T14:23:18Z

I was wondering if anyone can tell me the formula to figure out how long one will long jump based on speed and takeoff angle? Maybe it is not that simple. Just wondering what it is. Thanks.

Weak abductor the cause of my groin injuries?

2008-11-05T20:56:47Z

Lately I have been plagged with groin strains, none of them serious. Whenever I sprint over 70m I feel how I have to conciously abduce my legs while recovering them, specially the right one, which suffered 4 from 5 strains / cramps.
If you look at any videos of mine my problem becomes obvious and weird. My knees also seem to collapse. I am never able to recover my knees from the push phase in a moreso straight line, they always come very close to my support knee and only when in front the leg is abduced. Even while jogging this happens (in the pictures I am jogging).
While squatting my knees tend to collapse inwards and I believe I tried to correct a symptom whith pronation shoes.

Some pictures:

Some (crappy) vids:
http://www.youtube.com/watch?v=jFRNIBLwU1c
http://www.youtube.com/watch?v=FPYWAOjMSo4

Is the source of the problem a weak group of abductors? What exercises should be done?

ATP/ Creatine

2008-11-01T00:05:51Z

How fast does our bodies replenish our cells with ATP? And how fast does out bodies doe the same with creatine?

When I was in high school we would do flying 30’s somedays with a walk back rest and on speed days we would do them with 3 minutes between? My coach always said that this was becuase it took creatine 3 minutes to be put back into our systems.

I’m a new track coach, and I started a fall running club this early in the season what should I concentrate with my sprinters?

Thanks for the help

energy systems

2008-10-25T19:52:36Z

Its been awhile since I looked at the different energy systems. Could someone please run over the basics for me?

Thanks

Shoes for over pronators ?

2008-09-27T19:21:21Z

Which shoes are recommended for over-pronators who use Orthotics ?

Some say motion control because they support the arch, but what if the arch is already fixed by orthotics ?

some say cushion.. some say flexibility.. ?

Does it really matter when you have orthotics ?

Endurance Relationships - Anaerobic & Aerobic

2008-10-13T21:23:36Z

Simplified a bit 10/15/08…

Is there a relationship between “anaerobic” & “aerobic” enduranc… Recognizing that in basic terms these are distinct energy systems - is there an interdependency - such that one is dependent upon (requires) the development of the other?

Or are they complementary - where developing one (say aerobic) makes it easier to develop the other (anaerobic)?

Is it possible to target one type of endurance directly (understanding that there are sub-categories) - and realize an indirect improvement in the other? Example - would training special endurance II have an indirect improvement upon special endurance I?

Foot rotating at contact

2008-09-12T20:41:04Z

In an attempt to run more efficiently, I have been studying my form recnetly. One thing that is apparent is that as my right foot is about to make contact with the ground, it is rotating inward and strikes the ground rotated inward. After pushing off it gradually corrects itself to straight a bit after maximum extension, and then again right before foot contact it starts rotating inward again. It’s present during walking also. the left foot is fine. anyone know what the cause is and what some corrective exercises are for this problem?

$1500 for a book?

2008-08-11T00:18:03Z

A book that keeps popping up under the “recommended reading” portion of the site called “Biomechanics in Sport” is listed at $1530. It looks like an interesting book. What gives about the price? Is it the only one in existence, hand written, and with elaborate artwork? I thought we invented the printing press in the 1500s. I can’t afford a $1500 book.

Knees Too High?

2008-06-10T10:15:51Z

Is running with your knees too high a sprinting flaw? I have a triple jumper that seems to overdo the high knee technique. It seems like yes would be the answer if the high knees cause the hips to drop. But I am looking for a little more insight than my small brain can muster.

Asafa Powell [sports science] on youtube

2008-05-20T15:09:12Z

If you haven’t seen it, check it out on youtube.

http://www.youtube.com/watch?v=gkPlF6L8FOE

It is a five part series analyzing Asafa Powell’s stride, start, muscles, training, etc. Don’t get too excited though, only some of it is in English.

There are a couple of issues that I want to address:

1) It seemed to me that Asafa’s sprint form missed some major markers, am I wrong on this?

2) How close is Tyson Gay to the sprint model? I don’t have an acute eye for this, but he was noticeably better at full stride than Asafa.

3) Is the size of your psoas an indicator of speed?

4) I know in the Barry Ross thread, Mike mentioned that Flo Jo was in Mann’s top five all time for biomechanical efficiency? Who are the others? Carl?

5) I wish this was in English!!!!