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Old 01-03-2012, 10:57 PM   #1
amacs
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Default The Brain and Fatigue

FOr those interested and able to access it there is an interesting demonstration of the role of central fatigue to be seen here at about the 45 minute mark.

regards

ANdy
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Old 02-03-2012, 06:01 AM   #2
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Hi ANdy!

Quote:
FOr those interested and able to access it there is an interesting demonstration of the role of central fatigue to be seen here at about the 45 minute mark.
Seems like really good stuff!

Could you provide a description for those of us across the pond who can't access the video?
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Old 02-03-2012, 09:18 AM   #3
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Thanks Andy!
Could you describe the video (not necessarily easy?) for those of us across several ponds?

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Old 02-03-2012, 08:26 PM   #4
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Its a BBC documentary about exercise and fatigue. There is a very interesting section about the fact that it is the brain that decides when to stop exercise. They prove this by a neat experiment where they fatigue someone in a chamber with reduced oxygen. Then get them to do a maximal muscle contraction, then repeat with stimulation of the motor cortex and you get a larger muscle contraction. Showing that it is the brain that is the ultimate governor, not lactic acid or and muscle "weakness".

Also some very interesting research on the effects of 20 second maximal exercises and the effects that has on insulin efficiency. BBC, I salute you. Shame you can't get the iplayer on the other side of the pond.
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Old 02-03-2012, 08:30 PM   #5
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I think this might be relevant; it's from the chronic fatigue (brain) perspective. ME/CFS Buzz: News of the Week From Phoenix Rising (Feb 29th, 2012). The whole blog is on the topic, actually.
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Old 02-03-2012, 10:39 PM   #6
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Quote:
Originally Posted by Sheffphysio View Post
Its a BBC documentary about exercise and fatigue. There is a very interesting section about the fact that it is the brain that decides when to stop exercise. They prove this by a neat experiment where they fatigue someone in a chamber with reduced oxygen. Then get them to do a maximal muscle contraction, then repeat with stimulation of the motor cortex and you get a larger muscle contraction. Showing that it is the brain that is the ultimate governor, not lactic acid or and muscle "weakness".

Also some very interesting research on the effects of 20 second maximal exercises and the effects that has on insulin efficiency. BBC, I salute you. Shame you can't get the iplayer on the other side of the pond.
Thanks Dave - you beat me to the draw in answering Nari and Ken. The experiment was not without an element of drama as they used a magnetic coil to stimulate the motor cortex which certainly seemed to produce an interesting response from the subject both when it was applied and when removed.

Of course discharging a firearm has a similar stimulus to power output s does unexpectedly seeing the finish line just as you go to quit during a maximal test protocol.

Very much feeds into Noakes Central Governor theory.

regards

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Old 02-03-2012, 11:00 PM   #7
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On the central governor principle:

Studies have indicated that forced exercise for Parkinsons people is actually creating neuroplastic changes in the basal ganglia, improving tremor, balance and reducing fatigue.
This entails forcing the PD person on a fixed bike or treadmill to exercise for 30% over the tolerance point, ie, when they feel they can't continue anymore. They feel completely exhausted when they finally stop, but the improvement shows up next day.

I'll dig up some of the studies done (haven't the time to do it now) but the whole concept is interesting for any degenerative condition.

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Old 02-03-2012, 11:15 PM   #8
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Quote:
Originally Posted by nari View Post
On the central governor principle:

Studies have indicated that forced exercise for Parkinsons people is actually creating neuroplastic changes in the basal ganglia, improving tremor, balance and reducing fatigue.
This entails forcing the PD person on a fixed bike or treadmill to exercise for 30% over the tolerance point, ie, when they feel they can't continue anymore. They feel completely exhausted when they finally stop, but the improvement shows up next day.

I'll dig up some of the studies done (haven't the time to do it now) but the whole concept is interesting for any degenerative condition.

Nari
Interesting Nari, I think that Parkinsons has been ripe for exploration by a number of interventions for years. Too much interest in producing a magic pill though ...

regards

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Old 27-03-2012, 09:58 AM   #9
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Hi Andy,
While trying to check the link I got message that BBC iPlayers TV programs are available in UK only. I will be kind if you sill share some useful stuff for Amercans also.
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Old 27-03-2012, 05:13 PM   #10
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Hi Brandan,
We have a welcome forum here, where you are welcome to start a thread and introduce yourself, where we can welcome you to the board. You seem like you want to be here to share your ideas, so we'd like to know who you are, what you do in the world, how you think, why you think your ideas might be useful to others.
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