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Association between cognitive performance, physical fitness, and physical activity level in CFS

Discussion in 'Latest ME/CFS Research' started by Dolphin, Jul 25, 2014.

  1. Dolphin

    Dolphin Senior Member

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    (note that I shortened the title to fit it in to the character limit)

    Free full text: http://www.rehab.research.va.gov/jour/2013/506/ickmans506.html

     
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  2. Dolphin

    Dolphin Senior Member

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    Another frustrating paper from the Jo Nijs team.

    In sum, the healthy controls didn't find a correlation between cognitive scores and exercise test results. This would suggest the results are largely independent (which is sort of what one would expect: there are plenty of unfit people with high IQs (say) and very fit people who still aren't very bright).

    So the finding that cognitive scores and exercise test correlate in CFS suggests to me that something unusual happens in CFS: an independent variable, severity, explains both results. Instead, they make out it is to do with deconditioning and similarly the impairments can be alleviated by improving deconditioning.
     
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  3. Dolphin

    Dolphin Senior Member

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    I sign of where Nijs and co are at:
     
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  4. Dolphin

    Dolphin Senior Member

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    Sounds like a fancy actometer:

     
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  5. Dolphin

    Dolphin Senior Member

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    I would have preferred if the actometer had been used at a different time than the three days after the exercise test as it could give untypical results.

    The results weren't that exciting for the comparisons between physical activity and cognitive performance:

    *This means that more sleep was associated with worse cognitive results in CFS

    **This means that more steps was associated with worse cognitive results in CFS (and marginally significant in the control group).
     
    Last edited: Jul 25, 2014
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  6. Dolphin

    Dolphin Senior Member

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    I'm not going to try to list all the results but here are the Stroop results:
    If one looks at Figure 2 (a), (b) and (c) one can see that for each of them, the CFS were quite significantly slower.
     
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  7. Dolphin

    Dolphin Senior Member

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    (Not important I think)
    This talk about the controls seems speculative
     
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  8. Dolphin

    Dolphin Senior Member

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    Very annoying comment (I thought) in the discussion:
    Underlined bit is annoying.
    More annoying speculation
    (replying to them) Or it may not
     
    Last edited: Jul 25, 2014
  9. Dolphin

    Dolphin Senior Member

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    (from Discussion)
    *Physical Activity Levels
     
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  10. Dolphin

    Dolphin Senior Member

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    The hypothesis in the last sentence seems questionable to me when PAL wasn't related to cognitive function.
     
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  11. Dolphin

    Dolphin Senior Member

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  12. Esther12

    Esther12 Senior Member

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    They're pretty happy to chuck ideas about us around without much concern about whether it's reasonable, or what harm it may do. What bold and pioneering thinkers they are.

    A more moral approach might be less good for their careers: "Oops - another hypothesis shown to be flawed. We should probably keep any further speculations about these patients to ourselves until we have some more evidence to either support or refute our theories."
     

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