2 New Messages
Digest #4604
Messages
Tue Aug 7, 2012 10:52 am (PDT) . Posted by:
"John Casler" bioforce_inc
Ken Jakalski wrote:
One of the tests (ASR or Anaerobic Speed Reserve) that Weyand and Bundle
performed at the Rice lab determined that his speed-duration relationship
was identical to that of intact-limb runners. Hence the conclusion that
he fatigues normally as race durations increase.
John Casler writes:
Hi Ken,
Have been enjoying the Olympics and Oscar's performances.
I do however wonder about the above.
I have used Stair Running/Climbing for Cardio Training for over 20 years.
Over that period of time most every session has been "under time",
attempting to better my previous times.
One technique I used to increase my effectiveness and speed was to (on the
ascent) step deep into the step, and NOT push with my foot in a way that
involved my calf. That is, I pushed with my heel to reduce calf action.
Why? My reasoning was that the calves were as far away from my heart as
possible which meant longer circulatory routing. As well the blood vessels
in the calves are smaller, and the distance back to the heart was all
vertical and again the longest in the body.
This may have placed a small amount of additional stress on my hips and
upper thighs/hams, but they are far closer to the heart and had large blood
supplies and vessels. This proximity allowed for a faster more effective
exchange rate.
Point being, I was able to go much faster than if I tried to hit each step
on the ball of my foot and utilized the calf more. I tend to think such
might be the case with Oscar, but then that is just a personal theory.
I see Pistorius would have a similar circulatory exchange efficiency of not
servicing the lower leg.
Any thoughts?
Regards,
John Casler
TRI-VECTOR 3-D Training Systems
Century City, CA
-||||--------||||-
One of the tests (ASR or Anaerobic Speed Reserve) that Weyand and Bundle
performed at the Rice lab determined that his speed-duration relationship
was identical to that of intact-limb runners. Hence the conclusion that
he fatigues normally as race durations increase.
John Casler writes:
Hi Ken,
Have been enjoying the Olympics and Oscar's performances.
I do however wonder about the above.
I have used Stair Running/Climbing for Cardio Training for over 20 years.
Over that period of time most every session has been "under time",
attempting to better my previous times.
One technique I used to increase my effectiveness and speed was to (on the
ascent) step deep into the step, and NOT push with my foot in a way that
involved my calf. That is, I pushed with my heel to reduce calf action.
Why? My reasoning was that the calves were as far away from my heart as
possible which meant longer circulatory routing. As well the blood vessels
in the calves are smaller, and the distance back to the heart was all
vertical and again the longest in the body.
This may have placed a small amount of additional stress on my hips and
upper thighs/hams, but they are far closer to the heart and had large blood
supplies and vessels. This proximity allowed for a faster more effective
exchange rate.
Point being, I was able to go much faster than if I tried to hit each step
on the ball of my foot and utilized the calf more. I tend to think such
might be the case with Oscar, but then that is just a personal theory.
I see Pistorius would have a similar circulatory exchange efficiency of not
servicing the lower leg.
Any thoughts?
Regards,
John Casler
TRI-VECTOR 3-D Training Systems
Century City, CA
-||||-------
Tue Aug 7, 2012 10:53 am (PDT) . Posted by:
"deadliftdiva@comcast.net"
Great response on this one - I have another question though.
Considering the spikes on his blades - could they be the wrong ones 1 day, the right ones another? Is slipping much more a hazard than it is for the average runner even on the world class surface?
Also, sadly our Blade Runner has not made it to the final - the heat time far exceeded his best time and so he has completed his individual racing. However, my understanding is they are going to use him a relay, giving us another chance to see him race. One wonders about transition/hand off not hitting his blades?
The Phantom
aka Linda Schaefer, CMT/RMT, competing powerlifter
Denver, Colorado, USA
----- Original Message -----
From: CoachJ1@aol.com
To: Supertraining@yahoogroups.com
Sent: Monday, August 6, 2012 9:47:36 AM
Subject: Re: [Supertraining] Blade Runner, heat 1....
Hi Linda!
>when other folks are feeling oxygen debt on that homestretch, how much
does he feel? does he tie up like the others if he pushes too hard
I'm glad you're enjoying the Olympics. Your question above is indeed a
good one.
One of the tests (ASR or Anaerobic Speed Reserve) that Weyand and Bundle
performed at the Rice lab determined that his speed-duration relationship
was identical to that of intact-limb runners. Hence the conclusion that he
fatigues normally as race durations increase.
That specific test (which I have used since '03 to determine speed
profiles for my high school athletes)requires the athlete to run all out trials of
different durations--from 2 seconds to 300 seconds.
When expressed in relation to these two speeds, "the all-out speeds of
runner for a trial of any distance or time (within the specified range)
follow a common curve that applies to all runners regardless of event specialty
For example, all runners regardless of event specialization maintain a
speed halfway between their top sprint and top aerobic speeds for all-out
efforts lasting 60 seconds."
So basically, as discussed in their energetics of high speed running
papers, the two speeds and a common relationship allow all-out sprint and
middle-distance performance to be predicted to within an accuracy of 3.0%.
Weyand and Bundle did not know if Pistorius would conform to this
relationship, or if his speed over the longer sprints would be greater as a result
of his prosthetics. Their results indicated that his speed-duration
relationship was "identical to that of intact-limb runners." In other words, he
fatigues normally as race durations increase.
The discussion/debate on Pistorius competing in the Games will certainly
continue. Weyand and Bundle have acknowledged this, but they do not waiver
on their position relative to his mechanical advantage.
"Thus, while the evidence leaves open legitimate scientific debate about
exactly how large the advantage of Mr. Pistorius is, there is no
scientifically reasonable discussion about whether or not he has one.
We close by noting that, in keeping with our responsibility as
researchers, what we offer is an objective evaluation of Mr. Pistorius's performances
based on the comprehensive scientific and factual history available. We
wish him every success and the continued opportunity to push athletic and
other boundaries in ways that inspire people throughout the world."
Ken Jakalski
Lisle HS
Lisle, IL USA
[Non-text portions of this message have been removed]
[Non-text portions of this message have been removed]
Considering the spikes on his blades - could they be the wrong ones 1 day, the right ones another? Is slipping much more a hazard than it is for the average runner even on the world class surface?
Also, sadly our Blade Runner has not made it to the final - the heat time far exceeded his best time and so he has completed his individual racing. However, my understanding is they are going to use him a relay, giving us another chance to see him race. One wonders about transition/hand off not hitting his blades?
The Phantom
aka Linda Schaefer, CMT/RMT, competing powerlifter
Denver, Colorado, USA
----- Original Message -----
From: CoachJ1@aol.
To: Supertraining@
Sent: Monday, August 6, 2012 9:47:36 AM
Subject: Re: [Supertraining] Blade Runner, heat 1....
Hi Linda!
>when other folks are feeling oxygen debt on that homestretch, how much
does he feel? does he tie up like the others if he pushes too hard
I'm glad you're enjoying the Olympics. Your question above is indeed a
good one.
One of the tests (ASR or Anaerobic Speed Reserve) that Weyand and Bundle
performed at the Rice lab determined that his speed-duration relationship
was identical to that of intact-limb runners. Hence the conclusion that he
fatigues normally as race durations increase.
That specific test (which I have used since '03 to determine speed
profiles for my high school athletes)requires the athlete to run all out trials of
different durations--from 2 seconds to 300 seconds.
When expressed in relation to these two speeds, "the all-out speeds of
runner for a trial of any distance or time (within the specified range)
follow a common curve that applies to all runners regardless of event specialty
For example, all runners regardless of event specialization maintain a
speed halfway between their top sprint and top aerobic speeds for all-out
efforts lasting 60 seconds."
So basically, as discussed in their energetics of high speed running
papers, the two speeds and a common relationship allow all-out sprint and
middle-distance performance to be predicted to within an accuracy of 3.0%.
Weyand and Bundle did not know if Pistorius would conform to this
relationship, or if his speed over the longer sprints would be greater as a result
of his prosthetics. Their results indicated that his speed-duration
relationship was "identical to that of intact-limb runners." In other words, he
fatigues normally as race durations increase.
The discussion/debate on Pistorius competing in the Games will certainly
continue. Weyand and Bundle have acknowledged this, but they do not waiver
on their position relative to his mechanical advantage.
"Thus, while the evidence leaves open legitimate scientific debate about
exactly how large the advantage of Mr. Pistorius is, there is no
scientifically reasonable discussion about whether or not he has one.
We close by noting that, in keeping with our responsibility as
researchers, what we offer is an objective evaluation of Mr. Pistorius's performances
based on the comprehensive scientific and factual history available. We
wish him every success and the continued opportunity to push athletic and
other boundaries in ways that inspire people throughout the world."
Ken Jakalski
Lisle HS
Lisle, IL USA
[Non-text portions of this message have been removed]
[Non-text portions of this message have been removed]
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