1. Sign our petition calling on Cochrane to withdraw their review of Exercise Therapy for CFS here.
    Dismiss Notice
  2. Guest, the 'News in Brief' for the week beginning 18th March 2024 is here.
    Dismiss Notice
  3. Welcome! To read the Core Purpose and Values of our forum, click here.
    Dismiss Notice

Reduced parasympathetic reactivation during recovery from exercise in(ME)/(CFS), 2015, J. Van Oosterwijck et al (also 2021)

Discussion in 'ME/CFS research' started by Sly Saint, Nov 1, 2020.

  1. Sly Saint

    Sly Saint Senior Member (Voting Rights)

    Messages:
    9,574
    Location:
    UK
    Not a new study.

    Reduced parasympathetic reactivation during recovery from exercise in myalgic encephalomyelitis (ME)/chronic fatigue syndrome (CFS)

    2015

    https://www.physiotherapyjournal.com/article/S0031-9406(15)02014-3/abstract


    @PhysiosforME you might be interested in these authors research (see also Polli).
     
  2. Snow Leopard

    Snow Leopard Senior Member (Voting Rights)

    Messages:
    3,819
    Location:
    Australia
    Heart rate (beat to beat) variation is quite nonspecific and doesn't necessarily suggest any abnormal pathology at all.

    In particular, the restoration of regular HRV in healthy people occurs more rapidly in those with higher levels of fitness. As the above study did not control for fitness, the effect may simply be an artifact of lower fitness. The abstract is also from a conference, rather than a proper peer-reviewed manuscript, so key details of the methodology and results are missing (like a visualisation of change over time).

    The abstract of the following review makes some clear points:
    Cardiac parasympathetic reactivation following exercise: implications for training prescription
    https://pubmed.ncbi.nlm.nih.gov/23912805/
    doi:10.1007/s40279-013-0083-4

    With regards to metaboreflex stimluation, they state:
    The described baroreflex stimulation requires post-exercise hypervolmemia, but I'm not convinced this is a factor in ME/CFS. The increased difficulty in achieving similar VO2Peak on a second CPET after 24 hours seems to also contradict this.

    There is also suggestion that delayed "parasympathetic reactivation" is due to centrally acting chemo/metaboloreflex:

    Effect of Acute Hypoxia on Post-Exercise Parasympathetic Reactivation in Healthy Men
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3429061/
     
  3. Sly Saint

    Sly Saint Senior Member (Voting Rights)

    Messages:
    9,574
    Location:
    UK
    not sure if this has been republished or what

    Reduced Parasympathetic Reactivation during Recovery from Exercise in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome

    Received: 30 June 2021 / Revised: 21 September 2021 / Accepted: 22 September 2021 / Published: 30 September 2021

    https://www.mdpi.com/2077-0383/10/19/4527
     
    Samuel, Michelle, Sean and 2 others like this.

Share This Page