I have submitted a comment on this study to Musculoskeletal Care, but it was rejected because "The journal does not accept commentaries based on the review/opion of one author's work." The journal didn't explicitly say they accept letters, so I knew this could happen. I wanted to give it a go anyway because I think this is an important issue, one that could lead to a lot of confusion in the future. I've now published my comment on Pubpeer which also notifies the authors. I hope they'll take the feedback seriously.
https://pubpeer.com/publications/7E...m_medium=BrowserExtension&utm_campaign=Chrome
Pacing: one term, many meanings
Antcliff et al. (2019) explored the opinion of 92 English healthcare professionals on the use of activity pacing for conditions of chronic pain and fatigue. The authors' objective to provide a framework to standardize pacing however seems unlikely to be successful. It has been noted that pacing represents “a variety of differing and, at times, contradictory concepts” (Jamieson-Lega, Berry, & Brown, 2013).
Broadly, two main traditions exist (Nielson, Jensen, Karsdorp, & Vlaeyen, 2013). One has a history in operant conditioning and is mostly used in the treatment of chronic pain. It consists of a preplanned strategy that is time- or quota-contingent with the aim of breaking the association between resting behavior and symptoms. It involves dividing tasks into manageable parts, doing things slowly but steadily, and building a consistent routine with the goal of achieving a target, often an increase in (physical) activity (Nielson et al., 2013). The other main tradition is energy conservation management as used in patients with a neurological condition such as multiple sclerosis. Here pacing can be symptom-contingent as it is mainly aimed at avoiding overexertion and relapses while engaging in meaningful activities. It involves balancing activity and rest, delegating tasks, setting priorities, and using assistive devices (Blikman et al., 2013).
The opinions surveyed by Antcliff et al. only reflect the first tradition and exclude other approaches to pacing, most notably the version used by patients with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). The hallmark symptom of ME/CFS is no longer considered to be fatigue but post-exertional malaise (PEM), a marked symptom exacerbation when patients exceed a certain activity level. Patients use pacing to limit the effects of PEM while remaining as active as possible (Goudsmit, Nijs, Jason, & Wallman, 2012). Surveys have consistently shown that this is the preferred form of activity management for persons with ME/CFS (Geraghty, Hann, & Kurtev, 2017). It is advised by the Centers for Disease Control and Prevention (CDC) in the United States and mentioned in the National Institute for Health and Care Excellence (NICE) guideline for ME/CFS in the United Kingdom.
It is unclear why Antcliff et al. insist on a standardized framework of pacing for both chronic pain and ME/CFS as the versions used in these conditions are in many respects contradictory. Indeed, when Antcliff and colleagues developed the activity pacing questionnaire several panelists suggested “that it might be difficult to develop a generic questionnaire for both chronic pain and fatigue” (Antcliff, 2014). One participant noted a conflict between “pacing to manage/reduce symptoms, and pacing in order to optimize function” (Antcliff, 2014). Unfortunately, such voices are underrepresented in the studies by Antcliff et al. Most of the healthcare professionals surveyed are physiotherapists and occupational therapists who provide pacing as part of rehabilitative interventions such as graded exercise therapy (Antcliff et al., 2019). Their view on pacing seems different from the version used by ME/CFS patients and expert clinicians (Goudsmit et al. 2012).
No reason has been provided for why the treatment of ME/CFS and chronic pain should be similar. Any attempt to standardize pacing for both conditions will most likely increase confusion, rather than decrease it. Going forward, I would advise using the broad definition of pacing proposed by Jamieson-Lega et al. (2013) namely “an active self-management strategy whereby individuals learn to balance time spent on activity and rest for the purpose of achieving increased function and participation in meaningful activities.” This can then be further refined depending on the specific illness or treatment goal. Pacing is a single term, but it has many meanings.
References
Antcliff, D. (2014). The Development of an Activity Pacing Questionnaire for Chronic Pain and/or Fatigue. (Doctoral dissertation). University of Manchester, United Kingdom. Retrieved from:
https://www.escholar.manchester.ac....-ac-man-scw:227500&datastreamId=FULL-TEXT.PDF
Antcliff, D., Keenan, A. M., Keeley, P., Woby, S., & McGowan, L. (2019). Survey of activity pacing across healthcare professionals informs a new activity pacing framework for chronic pain/fatigue. Musculoskeletal Care.
https://doi.org/10.1002/msc.1421
Blikman, L. J., Huisstede, B. M., Kooijmans, H., Stam, H. J., Bussmann, J. B., & van Meeteren, J. (2013). Effectiveness of energy conservation treatment in reducing fatigue in multiple sclerosis: a systematic review and meta-analysis. Archives of Physical Medicine and Rehabilitation, 94, 1360-1376.
https://doi.org/10.1016/j.apmr.2013.01.025
Jamieson-Lega, K., Berry, R., & Brown, C. A. (2013). Pacing: a concept analysis of the chronic pain intervention. Pain Research and Management, 18, 207-2013.
http://dx.doi.org/10.1155/2013/686179
Geraghty, K., Hann, M., & Kurtev, S. (2017). Myalgic encephalomyelitis/chronic fatigue syndrome patients' reports of symptom changes following cognitive behavioural therapy, graded exercise therapy and pacing treatments: Analysis of a primary survey compared with secondary surveys. Journal of Health Psychology, 24, 1318-1333.
https://doi.org/10.1177/1359105317726152
Goudsmit, E. M., Nijs, J., Jason, L. A., & Wallman, K. E. (2012). Pacing as a strategy to improve energy management in myalgic encephalomyelitis/chronic fatigue syndrome: a consensus document. Disability and Rehabilitation, 34, 1140-1147.
https://doi.org/10.3109/09638288.2011.635746
Nielson, W. R., Jensen, M. P., Karsdorp, P. A., & Vlaeyen, J. W. (2013). Activity pacing in chronic pain: Concepts, evidence, and future directions. Clinical Journal of Pain, 29, 461–468.
https://doi.org/10.1097/AJP.0b013e3182608561