Adarq.org

was in connecticut/nyc wed-sat, got back late last night.

WEIGHT: ???
SORENESS: none
ACHES/INJURIES: right knee a little
MENTAL STATE: good

- shoot around

- bunch o'jumps

had a few three-step jumps at 3 knuckles, a few two-step jumps at 2 knuckles. not too bad, probably recent PR. strained wrist/forearm on a few of them cause hanging on rather than wrapping-and-releasing. dumb. there was a shortish (5'8?) dude in there shooting around. he did a few self-lobs, most of which he missed but not by much. hit a few pretty well. he covered a lot of ground with his ultimate step, really wide plant. got up well off one, too. when i try to cover that much ground on my plant step it is...not pretty.

Yeah that's crazy far.  I don't get the double leg bounds though... 36 feet??  If you can jump three meters on a broad jump, that close to 10 feet...  I usually jump closer to 9'6 but I always go well past 40 feet in four jumps; the bound should help you go farther and farther and you should also benefit from the fact that when you do consecutive jumps you jump from where you land rather than go back and put your toes where you heels land (as you would if you were summing single jumps).

Maybe your on to something with the low jumping:

https://www.youtube.com/watch?v=ImXLBmzCRXg

In this video I do a standing jump at 30 seconds and three consecutive jumps at 35 seconds.  You can see from the yard markers that I barely clear 9 feet (maybe 9'3) on the broad jump; but on the multi-jumps I start four feet behind the line and land between the 9 and 10 yard marker (so about 32 feet with each jump going a bit farther).   I think I go a bit higher than you; maybe I do that because it is easier for bounding to jump higher but a low jump might help for standing jump??

Quote from: acole14 on November 16, 2013, 08:35:43 pm

This paper breaks down the broad jump pretty well, it advocates a take-off angle of 19-27deg, with a forward lean angle (not the take-off angle, which is angle of the midpoint/velocity angle...I think) at around 45deg:



The test subjects weren't exactly elite athletes (avg broad jump of ~2.2m), but it's still an interesting read.

I can't see the link to the paper.  Obviously the optimal angle for horizontal travel is 45 deg but in the long jump the sacrifice to speed required to create such a steep vertical impulse makes the effective optimal angle a lot lower.   I won't bore you with the physics but the optimal angle can be calculated and is approximately 30-35 degrees and goes up with takeoff speed.   However, in practice the angles are usually lower due to biomechanical constraints; in a paper I published (http://www.bibsonomy.org/bibtex/1a1fb8416c5786efc27006990f22c102a?lang=en) our collaborators found that the take off angle for high-level long jumpers increases from about 25 degrees (Carl Lewis, Jessie Owens) as you shorten the runway (ie the slower they go the closer they are able to jump to optimal angle).

The standing broad jump isn't as well studied but jumping without any approach should allow a much steeper angle than the long jump.  I would bet that any athlete broad jumping 3+ meters takes off with a steeper angle.  I imagine that using low-level test subjects probably is the problem (although I can't see the paper -- the model could be great), because athletes incapable of jumping high will actually perform best with low angles simply with hip swing.   If you assume an athlete is capable of vertical jumping 14 inches and then calculate his expected broad jump modeling him as a point at his COM you will come up with a broad jump much worse than he can actually attain simply because he can lean forward moving his COM past his feet and then jump/swing his hips forward and land with his COM behind his feet.   Measuring foot to foot will be farther than the model predicts.  In fact I have trained really low level athletes and they attain their best standing broad jump by bringing one foot off the ground first and stretching it out and then bringing the next off the ground to jump and match it.   Kinda long winded but the point is standing jump is really different than vertical jump as far as the mechanics for low-level and high-level performers.  At your level I would imagine you will hit diminishing gains at your standing jump with that low of an angle.  You are jumping into a sand pit so that might explain part of it though....

They are definitely not amongst the most powerful athletes, they don't come close to oly lifters.

4. Bobsleigh athletes are also among the most powerful athletes in the world based on their performances in the broad jump and power clean.