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Reliability of physiological, psychological, and cognitive variables in chronic fatigue syndrome

Discussion in 'Latest ME/CFS Research' started by Dolphin, Oct 24, 2013.

  1. Dolphin

    Dolphin Senior Member

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    *I gave each sentence its own paragraph
     
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  2. Dolphin

    Dolphin Senior Member

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    This study asked people to do exercise tests every seven days, so that four were completed.

    They tried to control for activity the day before the test with:
    They compared the results of the exercise test (W kg-1 i.e. Watts per kilogram) to four variables (Physical Fatigue, Mental Fatigue, Depression and Anxiety) at four time time-points.

    There was only one statistically significant correlation out of the 16 and they say this could even be due to chance as there was 16 comparisons.

    It is somewhat interesting that Physical Fatigue (Chalder Fatigue Questionnaire) and Mental Fatigue (Chalder Fatigue Questionnaire) didn't correlate with any of the exercise test results.
    [Aside: although all r-values (correlations) for these two were in the expected direction i.e. negative i.e. lower fatigue scores were associated with better exercise results].
     
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  3. Dolphin

    Dolphin Senior Member

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    They reported an published finding from an earlier study:
     
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  4. Dolphin

    Dolphin Senior Member

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    Both mental and physical fatigue showed poor reliability in both the CFS and control groups while the other variables were much more reliable.

    The authors discuss why this might be important in the introduction:
     
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