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Cochrane Database of Systematic Reviews

Tratamiento con ejercicios para el síndrome de fatiga crónica

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Información

DOI:
https://doi.org/10.1002/14651858.CD003200.pub7Copiar DOI
Base de datos:
  1. Cochrane Database of Systematic Reviews
Versión publicada:
  1. 25 abril 2017see what's new
Tipo:
  1. Intervention
Etapa:
  1. Review
Grupo Editorial Cochrane:
  1. Grupo Cochrane de Trastornos mentales comunes

Copyright:
  1. Copyright © 2019 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.

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Contraer

Autores

  • Lillebeth Larun

    Correspondencia a: Division for Health Services, Norwegian Institute of Public Health, Oslo, Norway

    [email protected]

  • Kjetil G Brurberg

    Division for Health Services, Norwegian Institute of Public Health, Oslo, Norway

  • Jan Odgaard‐Jensen

    Medicinrådet, København Ø, Denmark

  • Jonathan R Price

    Department of Psychiatry, University of Oxford, Oxford, UK

Contributions of authors

LL, KGB, JO‐J: checked trials for inclusion.
LL, KGB, JO‐J: extracted data for the update.
LL, JO‐J, KGB: analysed data for the update.
LL, JO‐J, JRP, KGB: wrote the update.

Sources of support

Internal sources

  • University of Oxford Department of Psychiatry, UK.

  • Norwegian Knowledge Centre for Health Services, Norway.

External sources

  • No sources of support supplied

Declarations of interest

LL: nothing to declare.
KGB: nothing to declare.
JO‐J: nothing to declare.
JRP: nothing to declare.

Acknowledgements

We would like to thank Peter White and Paul Glasziou for advice and additional information provided. We would also like to thank Kathy Fulcher, Richard Bentall, Alison Wearden, Karen Wallman and Rona Moss‐Morris for providing additional information from trials in which they were involved, as well as the CCDAN editorial base for providing support and advice and Sarah Dawson for conducting the searches. In addition, we would like to thank Jane Dennis, Ingvild Kirkehei, Hugh McGuire and Melissa Edmonds for their valuable contributions, and Elisabet Hafstad for assistance with the search.

Version history

Published

Title

Stage

Authors

Version

2019 Oct 02

Exercise therapy for chronic fatigue syndrome

Review

Lillebeth Larun, Kjetil G Brurberg, Jan Odgaard-Jensen, Jonathan R Price

https://doi.org/10.1002/14651858.CD003200.pub8

2017 Apr 25

Exercise therapy for chronic fatigue syndrome

Review

Lillebeth Larun, Kjetil G Brurberg, Jan Odgaard‐Jensen, Jonathan R Price

https://doi.org/10.1002/14651858.CD003200.pub7

2016 Dec 20

Exercise therapy for chronic fatigue syndrome

Review

Lillebeth Larun, Kjetil G. Brurberg, Jan Odgaard‐Jensen, Jonathan R Price

https://doi.org/10.1002/14651858.CD003200.pub6

2016 Jun 24

Exercise therapy for chronic fatigue syndrome

Review

Lillebeth Larun, Kjetil G. Brurberg, Jan Odgaard‐Jensen, Jonathan R Price

https://doi.org/10.1002/14651858.CD003200.pub5

2016 Feb 07

Exercise therapy for chronic fatigue syndrome

Review

Lillebeth Larun, Kjetil G. Brurberg, Jan Odgaard‐Jensen, Jonathan R Price

https://doi.org/10.1002/14651858.CD003200.pub4

2015 Feb 10

Exercise therapy for chronic fatigue syndrome

Review

Lillebeth Larun, Kjetil G. Brurberg, Jan Odgaard‐Jensen, Jonathan R Price

https://doi.org/10.1002/14651858.CD003200.pub3

2004 Jul 19

Exercise therapy for chronic fatigue syndrome

Review

Melissa Edmonds, Hugh McGuire, Jonathan R Price

https://doi.org/10.1002/14651858.CD003200.pub2

2001 Jul 23

Exercise therapy for chronic fatigue syndrome

Protocol

Melissa Edmonds, Hugh F McGuire, Jonathan JR Price

https://doi.org/10.1002/14651858.CD003200

Differences between protocol and review

Changes made to the original review are stated below.

Objectives have been changed from '(1) To systematically review all randomised controlled trials of exercise therapy for adults with CFS, and (2) To investigate the relative effectiveness of exercise therapy alone or as part of a treatment plan' in the 2004 version to 'The objective of this review was to determine the effects of exercise therapy (ET) for patients with chronic fatigue syndrome (CFS) as compared with any other intervention or control' in this update.

Comparisons have been changed from: '(1) Exercise therapy versus treatment as usual or relaxation plus flexibility, (2) Exercise therapy versus pharmacotherapy (fluoxetine), (3) Exercise therapy alone versus exercise therapy plus pharmacotherapy (fluoxetine) and (4) Exercise therapy alone versus exercise therapy plus patient education' in the 2004 version to the following in this update.

  • '"Passive control": treatment as usual/waiting‐list control/relaxation/flexibility.

    • "Treatment as usual" comprises medical assessments and advice given on a naturalistic basis. "Relaxation" consists of techniques that aim to increase muscle relaxation (e.g. autogenic training, listening to a relaxation tape). "Flexibility" includes stretches performed according to selected exercises given.

  • Psychological therapies: cognitive‐behavioural therapy (CBT)/cognitive treatment/supportive therapy/behavioural therapies/psychodynamic therapies.

  • Adaptive pacing therapy.

  • Pharmacological therapy (e.g. antidepressants).'

We have revised and reordered the list of secondary outcomes for clarity and have added self‐reported changes in overall health as a new outcome, while moving adverse effects from a secondary outcome to a primary outcome.

We have updated the methods according to recommendations provided in the 2011 version of the Cochrane Handbook for Systematic Reviews of Interventions. For the first version of this review (2004), assessment of methodological quality was conducted according to contemporary criteria of the handbook of The Cochrane Collaboration (Alderson 2004).The adequacy of allocation concealment was rated as adequate (A), unclear (B) or inadequate (C) or as not used (D), and the CCDAN Quality Rating System (Moncrieff 2001) was applied. For this update, we reextracted data on risk of bias to comply with current recommendations, and we used concealment of allocation as the main quality criterion for included studies.

To explore possible differences between studies using different treatment strategies, control conditions and diagnostic criteria, we decided to perform post hoc subgroup analyses when applicable. We also performed post hoc subgroup analyses excluding Powell 2001, as the results reported in this trial seem to have introduced considerable heterogeneity into the analysis. Moreover, in the protocol it is stated, "where results for continuous outcomes were presented using different scales or different versions of the same scale, we used standardised mean differences (SMDs)." We realise that the standardised mean difference (SMD) is much more difficult to conceptualise and interpret than the normal mean difference (MD); therefore we decided to report both MDs and SMDs in the Results section. In general, MDs are reported in the main Results section, whereas SMDs are supplied under the "Sensitivity and subgroup analysis" subheading.

Planned methods not used in this review

Cluster trials

Studies often employ 'cluster randomisation' (such as randomisation by clinician or practice), but analysis and pooling of clustered data pose problems. First, study authors often fail to account for intraclass correlation in clustered studies, leading to a 'unit of analysis' error (Bland 1997) whereby P values are spuriously low, confidence intervals unduly narrow and statistical significance overestimated. This causes type I errors (Bland 1997; Gulliford 1999).

No cluster RCTs were identified in this version of the review. Should such studies be identified in future updates, we will use the following methodological approach. When clustering has not been accounted for in primary studies, we will present data in a table, with a (*) symbol to indicate the presence of a probable unit of analysis error. We will seek to contact first authors of studies to obtain intraclass correlation co‐efficients for their clustered data and to adjust for this by using accepted methods (Gulliford 1999). When clustering is incorporated, we will present the data as if from a parallel‐group randomised study, but adjusted for the clustering effect. We will additionally exclude such studies in a sensitivity analysis.

If cluster studies are appropriately analysed by taking into account intraclass correlation co‐efficients and relevant data documented in the report, synthesis with other studies will be possible using the generic inverse variance technique.

Cross‐over trials

A major concern of cross‐over trials is the potential for carry‐over effect. This occurs when an effect (e.g. pharmacological, physiological, psychological) of treatment in the first phase is carried over to the second phase. As a consequence of entry to the second phase, participants can differ systematically from their initial state despite a wash‐out phase. For the same reason, cross‐over trials are not appropriate when the condition of interest is unstable (Elbourne 2002). As both effects are very likely in CFS/ME, randomised cross‐over studies were eligible but only when data up to the point of first cross‐over were used. Data from the subsequent (second) period of the cross‐over trial were not considered for analysis.

Studies with multiple treatment groups

Multiple dose groups

Some studies may address the effects of different levels of supervision and follow‐up with regards to the exercise intervention and the comparator (e.g. sessions for designing exercise therapy, sessions for designing exercise therapy and planned telephone contacts, sessions for designing exercise therapy and seven face‐to‐face treatment sessions, usual care). Should we identify trials that take this approach in future updates, we will adopt the following approach. For dichotomous outcomes, we will sum up the sample sizes and the numbers of people with events across all intervention groups. For continuous outcomes, means and standard deviations will be combined using the methods described in Chapter 7 (Section 7.7.3.8) of the Cochrane Handbook for Systematic Reviews of Interventions (Higgins 2011).

Multiple medications

Some studies may combine several interventions with one comparison group. Should we identify trials of this nature in future updates, we will analyse the effects of each intervention group versus placebo separately, but we will divide up the total number of participants in the placebo group. In the case of continuous outcomes, the total number of participants in the placebo group again will be divided up, but means and standard deviations will be left unchanged (see Chapter 16, Section 16.5.4, in Higgins 2011).

Methods intended for future reviews

If future updates identify a number of studies that enable reporting at different time points, this should be done for example at end of treatment, at short‐term follow‐up (zero to six months), at medium‐term follow‐up (seven to 12 months) and at long‐term follow‐up (over 12 months).

Notes

Cochrane’s Editor in Chief has received the revised version of the review from the author team with changes made in response to the complaint by Robert Courtney. The process has taken longer than hoped; the amended review is being finalised and it will be published during the next 2 months.

Previously published notes

March 2019

Cochrane’s editors and the review author team have jointly agreed that there will be a further period up to the end of May 2019, in which time the author team will amend the review to address changes aimed at improving the quality of reporting of the review and ensuring that the conclusions are fully defensible and valid to inform health care decision making. The changes will also address concerns raised in feedback since the Robert Courtney complaint. The amendment will not include a full update, but a decision about this will made subsequently.

November 2018

The author team has re‐submitted a revised version of this review following the complaint by Robert Courtney. The Editor in Chief and colleagues recognise that the author team has sought to address the criticisms made by Mr Courtney but judge that further work is needed to ensure that the review meets the quality standards required, and as a result have not approved publication of the re‐submission. The review is also substantially out of date and in need of updating.

Cochrane recognises the importance of this review and is committed to providing a high quality review that reflects the best current evidence to inform decisions.

The Editor in Chief is currently holding discussions with colleagues and the author team to determine a series of steps that will lead to a full update of this review. These discussions will be concluded as soon as possible.

October 2018

This review is subject to an ongoing process of review and revision following the submission of a formal complaint to the Editor in Chief. Cochrane considers all feedback and complaints carefully, and revises or updates reviews when it is appropriate. The review author team have advised us that a resubmission of this review is imminent. A decision on the status of this review will be made once this resubmission has been through editorial process, which we anticipate will be towards the end of November 2018.

February 2015

A protocol for an accompanying individual patient data review on chronic fatigue syndrome and exercise therapy has been published (Larun 2014).

Keywords

MeSH

PICO

Population
Intervention
Comparison
Outcome

El uso y la enseñanza del modelo PICO están muy extendidos en el ámbito de la atención sanitaria basada en la evidencia para formular preguntas y estrategias de búsqueda y para caracterizar estudios o metanálisis clínicos. PICO son las siglas en inglés de cuatro posibles componentes de una pregunta de investigación: paciente, población o problema; intervención; comparación; desenlace (outcome).

Para saber más sobre el uso del modelo PICO, puede consultar el Manual Cochrane.

PRISMA flow diagram.
Figuras y tablas -
Figure 1

PRISMA flow diagram.

Risk of bias summary: review authors' judgements about each risk of bias item for each included study.
Figuras y tablas -
Figure 2

Risk of bias summary: review authors' judgements about each risk of bias item for each included study.

Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.
Figuras y tablas -
Figure 3

Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 1 Fatigue (end of treatment).
Figuras y tablas -
Analysis 1.1

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 1 Fatigue (end of treatment).

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 2 Fatigue (follow‐up).
Figuras y tablas -
Analysis 1.2

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 2 Fatigue (follow‐up).

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 3 Participants with serious adverse reactions.
Figuras y tablas -
Analysis 1.3

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 3 Participants with serious adverse reactions.

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 4 Pain (follow‐up).
Figuras y tablas -
Analysis 1.4

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 4 Pain (follow‐up).

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 5 Physical functioning (end of treatment).
Figuras y tablas -
Analysis 1.5

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 5 Physical functioning (end of treatment).

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 6 Physical functioning (follow‐up).
Figuras y tablas -
Analysis 1.6

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 6 Physical functioning (follow‐up).

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 7 Quality of life (follow‐up).
Figuras y tablas -
Analysis 1.7

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 7 Quality of life (follow‐up).

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 8 Depression (end of treatment).
Figuras y tablas -
Analysis 1.8

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 8 Depression (end of treatment).

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 9 Depression (follow‐up).
Figuras y tablas -
Analysis 1.9

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 9 Depression (follow‐up).

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 10 Anxiety (end of treatment).
Figuras y tablas -
Analysis 1.10

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 10 Anxiety (end of treatment).

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 11 Anxiety (follow‐up).
Figuras y tablas -
Analysis 1.11

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 11 Anxiety (follow‐up).

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 12 Sleep (end of treatment).
Figuras y tablas -
Analysis 1.12

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 12 Sleep (end of treatment).

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 13 Sleep (follow‐up).
Figuras y tablas -
Analysis 1.13

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 13 Sleep (follow‐up).

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 14 Self‐perceived changes in overall health (end of treatment).
Figuras y tablas -
Analysis 1.14

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 14 Self‐perceived changes in overall health (end of treatment).

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 15 Self‐perceived changes in overall health (follow‐up).
Figuras y tablas -
Analysis 1.15

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 15 Self‐perceived changes in overall health (follow‐up).

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 16 Health resource use (follow‐up) [Mean no. of contacts].
Figuras y tablas -
Analysis 1.16

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 16 Health resource use (follow‐up) [Mean no. of contacts].

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 17 Health resource use (follow‐up) [No. of users].
Figuras y tablas -
Analysis 1.17

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 17 Health resource use (follow‐up) [No. of users].

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 18 Drop‐out.
Figuras y tablas -
Analysis 1.18

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 18 Drop‐out.

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 19 Subgroup analysis for fatigue.
Figuras y tablas -
Analysis 1.19

Comparison 1 Exercise therapy versus treatment as usual, relaxation or flexibility, Outcome 19 Subgroup analysis for fatigue.

Comparison 2 Exercise therapy versus psychological treatment, Outcome 1 Fatigue at end of treatment (FS; 11 items/0 to 33 points).
Figuras y tablas -
Analysis 2.1

Comparison 2 Exercise therapy versus psychological treatment, Outcome 1 Fatigue at end of treatment (FS; 11 items/0 to 33 points).

Comparison 2 Exercise therapy versus psychological treatment, Outcome 2 Fatigue at follow‐up (FSS; 1 to 7 points).
Figuras y tablas -
Analysis 2.2

Comparison 2 Exercise therapy versus psychological treatment, Outcome 2 Fatigue at follow‐up (FSS; 1 to 7 points).

Comparison 2 Exercise therapy versus psychological treatment, Outcome 3 Fatigue at follow‐up (FS; 11 items/0 to 33 points).
Figuras y tablas -
Analysis 2.3

Comparison 2 Exercise therapy versus psychological treatment, Outcome 3 Fatigue at follow‐up (FS; 11 items/0 to 33 points).

Comparison 2 Exercise therapy versus psychological treatment, Outcome 4 Participants with serious adverse reactions.
Figuras y tablas -
Analysis 2.4

Comparison 2 Exercise therapy versus psychological treatment, Outcome 4 Participants with serious adverse reactions.

Comparison 2 Exercise therapy versus psychological treatment, Outcome 5 Pain at follow‐up (BPI, pain severity subscale; 0 to 10 points).
Figuras y tablas -
Analysis 2.5

Comparison 2 Exercise therapy versus psychological treatment, Outcome 5 Pain at follow‐up (BPI, pain severity subscale; 0 to 10 points).

Comparison 2 Exercise therapy versus psychological treatment, Outcome 6 Pain at follow‐up (BPI, pain interference subscale; 0 to 10 points).
Figuras y tablas -
Analysis 2.6

Comparison 2 Exercise therapy versus psychological treatment, Outcome 6 Pain at follow‐up (BPI, pain interference subscale; 0 to 10 points).

Comparison 2 Exercise therapy versus psychological treatment, Outcome 7 Physical functioning at end of treatment (SF‐36, physical functioning subscale; 0 to 100 points).
Figuras y tablas -
Analysis 2.7

Comparison 2 Exercise therapy versus psychological treatment, Outcome 7 Physical functioning at end of treatment (SF‐36, physical functioning subscale; 0 to 100 points).

Comparison 2 Exercise therapy versus psychological treatment, Outcome 8 Physical functioning at follow‐up (SF‐36, physical functioning subscale; 0 to 100 points).
Figuras y tablas -
Analysis 2.8

Comparison 2 Exercise therapy versus psychological treatment, Outcome 8 Physical functioning at follow‐up (SF‐36, physical functioning subscale; 0 to 100 points).

Comparison 2 Exercise therapy versus psychological treatment, Outcome 9 Depression at end of treatment (HADS depression score; 7 items/21 points).
Figuras y tablas -
Analysis 2.9

Comparison 2 Exercise therapy versus psychological treatment, Outcome 9 Depression at end of treatment (HADS depression score; 7 items/21 points).

Comparison 2 Exercise therapy versus psychological treatment, Outcome 10 Depression at follow‐up (BDI; 0 to 63 points).
Figuras y tablas -
Analysis 2.10

Comparison 2 Exercise therapy versus psychological treatment, Outcome 10 Depression at follow‐up (BDI; 0 to 63 points).

Comparison 2 Exercise therapy versus psychological treatment, Outcome 11 Depression at follow‐up (HADS depression score; 7 items/21 points).
Figuras y tablas -
Analysis 2.11

Comparison 2 Exercise therapy versus psychological treatment, Outcome 11 Depression at follow‐up (HADS depression score; 7 items/21 points).

Comparison 2 Exercise therapy versus psychological treatment, Outcome 12 Anxiety at end of treatment (HADS anxiety; 7 items/21 points).
Figuras y tablas -
Analysis 2.12

Comparison 2 Exercise therapy versus psychological treatment, Outcome 12 Anxiety at end of treatment (HADS anxiety; 7 items/21 points).

Comparison 2 Exercise therapy versus psychological treatment, Outcome 13 Anxiety at follow‐up (BAI; 0 to 63 points).
Figuras y tablas -
Analysis 2.13

Comparison 2 Exercise therapy versus psychological treatment, Outcome 13 Anxiety at follow‐up (BAI; 0 to 63 points).

Comparison 2 Exercise therapy versus psychological treatment, Outcome 14 Anxiety at follow‐up (HADS anxiety; 7 items/21 points).
Figuras y tablas -
Analysis 2.14

Comparison 2 Exercise therapy versus psychological treatment, Outcome 14 Anxiety at follow‐up (HADS anxiety; 7 items/21 points).

Comparison 2 Exercise therapy versus psychological treatment, Outcome 15 Sleep at end of treatment (Jenkins Sleep Scale; 0 to 20 points).
Figuras y tablas -
Analysis 2.15

Comparison 2 Exercise therapy versus psychological treatment, Outcome 15 Sleep at end of treatment (Jenkins Sleep Scale; 0 to 20 points).

Comparison 2 Exercise therapy versus psychological treatment, Outcome 16 Sleep at follow‐up (Jenkins Sleep Scale; 0 to 20 points).
Figuras y tablas -
Analysis 2.16

Comparison 2 Exercise therapy versus psychological treatment, Outcome 16 Sleep at follow‐up (Jenkins Sleep Scale; 0 to 20 points).

Comparison 2 Exercise therapy versus psychological treatment, Outcome 17 Self‐perceived changes in overall health at end of treatment.
Figuras y tablas -
Analysis 2.17

Comparison 2 Exercise therapy versus psychological treatment, Outcome 17 Self‐perceived changes in overall health at end of treatment.

Comparison 2 Exercise therapy versus psychological treatment, Outcome 18 Self‐perceived changes in overall health at follow‐up.
Figuras y tablas -
Analysis 2.18

Comparison 2 Exercise therapy versus psychological treatment, Outcome 18 Self‐perceived changes in overall health at follow‐up.

Comparison 2 Exercise therapy versus psychological treatment, Outcome 19 Health resource use (follow‐up) [Mean no. of contacts].
Figuras y tablas -
Analysis 2.19

Comparison 2 Exercise therapy versus psychological treatment, Outcome 19 Health resource use (follow‐up) [Mean no. of contacts].

Comparison 2 Exercise therapy versus psychological treatment, Outcome 20 Health resource use (follow‐up) [No. of users].
Figuras y tablas -
Analysis 2.20

Comparison 2 Exercise therapy versus psychological treatment, Outcome 20 Health resource use (follow‐up) [No. of users].

Comparison 2 Exercise therapy versus psychological treatment, Outcome 21 Drop‐out.
Figuras y tablas -
Analysis 2.21

Comparison 2 Exercise therapy versus psychological treatment, Outcome 21 Drop‐out.

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 1 Fatigue.
Figuras y tablas -
Analysis 3.1

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 1 Fatigue.

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 2 Participants with serious adverse reactions.
Figuras y tablas -
Analysis 3.2

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 2 Participants with serious adverse reactions.

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 3 Physical functioning.
Figuras y tablas -
Analysis 3.3

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 3 Physical functioning.

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 4 Depression.
Figuras y tablas -
Analysis 3.4

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 4 Depression.

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 5 Anxiety.
Figuras y tablas -
Analysis 3.5

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 5 Anxiety.

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 6 Sleep.
Figuras y tablas -
Analysis 3.6

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 6 Sleep.

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 7 Self‐perceived changes in overall health.
Figuras y tablas -
Analysis 3.7

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 7 Self‐perceived changes in overall health.

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 8 Health resource use (follow‐up) [Mean no. of contacts].
Figuras y tablas -
Analysis 3.8

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 8 Health resource use (follow‐up) [Mean no. of contacts].

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 9 Health resource use (follow‐up) [No. of users].
Figuras y tablas -
Analysis 3.9

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 9 Health resource use (follow‐up) [No. of users].

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 10 Drop‐out.
Figuras y tablas -
Analysis 3.10

Comparison 3 Exercise therapy versus adaptive pacing, Outcome 10 Drop‐out.

Comparison 4 Exercise therapy + antidepressant placebo versus antidepressant + exercise placebo, Outcome 1 Fatigue.
Figuras y tablas -
Analysis 4.1

Comparison 4 Exercise therapy + antidepressant placebo versus antidepressant + exercise placebo, Outcome 1 Fatigue.

Comparison 4 Exercise therapy + antidepressant placebo versus antidepressant + exercise placebo, Outcome 2 Depression.
Figuras y tablas -
Analysis 4.2

Comparison 4 Exercise therapy + antidepressant placebo versus antidepressant + exercise placebo, Outcome 2 Depression.

Comparison 4 Exercise therapy + antidepressant placebo versus antidepressant + exercise placebo, Outcome 3 Drop‐out.
Figuras y tablas -
Analysis 4.3

Comparison 4 Exercise therapy + antidepressant placebo versus antidepressant + exercise placebo, Outcome 3 Drop‐out.

Comparison 5 Exercise therapy + antidepressant versus antidepressant + exercise placebo, Outcome 1 Fatigue.
Figuras y tablas -
Analysis 5.1

Comparison 5 Exercise therapy + antidepressant versus antidepressant + exercise placebo, Outcome 1 Fatigue.

Comparison 5 Exercise therapy + antidepressant versus antidepressant + exercise placebo, Outcome 2 Depression.
Figuras y tablas -
Analysis 5.2

Comparison 5 Exercise therapy + antidepressant versus antidepressant + exercise placebo, Outcome 2 Depression.

Comparison 5 Exercise therapy + antidepressant versus antidepressant + exercise placebo, Outcome 3 Drop‐out.
Figuras y tablas -
Analysis 5.3

Comparison 5 Exercise therapy + antidepressant versus antidepressant + exercise placebo, Outcome 3 Drop‐out.

Exercise therapy for chronic fatigue syndrome

Patient or population: males and females over 18 years of age with chronic fatigue syndrome

Intervention: exercise therapy

Comparison: standard care, waiting list or relaxation/flexibility

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

Number of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Assumed risk

Corresponding risk

Control

Exercise

Fatiguea: FS, Fatigue Scale (0 to 11 points)

(end of treatment)

Mean fatigue in the control groups was 10.4 points

Mean fatigue in the intervention groups was
6.06 points lower (6.95 to 5.17 lower)

148
(1 study)

⊕⊕⊝⊝
Lowb,c

Lower score indicates less fatigue

Fatiguea: FS, Fatigue Scale (0 to 33 points)

(end of treatment)

Mean fatigue ranged across control groups from 15.3 to 26.3 points

Mean fatigue in the intervention groups was
2.82 points lower (4.07 to 1.57 lower)

540
(3 studies)

⊕⊕⊕⊝
Moderateb

Lower score indicates less fatigue

Fatiguea: FS, Fatigue Scale (0 to 42 points)

(end of treatment)

Mean fatigue ranged across control groups from 24.4 to 31.6 points

Mean fatigue in the intervention groups was 6.80 points lower (10.31 to 3.28 lower)

152
(3 studies)

⊕⊕⊕⊝
Moderateb

Lower score indicates less fatigue

Participants with serious adverse reactions

Study population

RR 0.99 (0.14 to 6.97)

319
(1 study)

⊕⊕⊕⊝
Moderated,e

13 per 1000

12 per 1000
(2 to 87)

Quality of Life (QOL) Scale (16 to 112 points)

(follow‐up)

Mean QOL score in the control group was 72 points

Mean QOL score in the intervention groups was 9.00 points lower (19.00 lower to 1.00 higher)

44
(1 study)

⊕⊝⊝⊝
Very lowb,f

Higher score indicates improved QOL

Physical functioning: SF‐36 subscale (0 to 100 points)

(end of treatment)

Mean physical functioning score ranged from 31.1 to 55.2 points across control groups

Mean physical functioning score in the intervention groups was 13.10 points higher (1.98 to 24.22 higher)

725
(5 studies)

⊕⊕⊝⊝

Lowb,g

Higher score indicates improved physical function

Depression: HADS depression score (0 to 21 points)

(end of treatment)

Mean depression score ranged across control groups from 5.2 to 11.2 points

Mean depression score in the intervention groups was 1.63 points lower (3.50 lower to 0.23 higher)

504
(5 studies)

⊕⊝⊝⊝
Very lowb,g,h

Lower score indicates fewer depressive symptoms

Sleep: Jenkins Sleep Scale (0 to 20 points)

(end of treatment)

Mean sleep score ranged across control groups from 11.7 to 12.2 points

Mean sleep score in the intervention groups was
1.49 points lower (2.95 to 0.02 lower)

323
(2 studies)

⊕⊕⊝⊝
Lowb,h

Lower score indicates improved sleep quality

Self‐perceived changes in overall health

(end of treatment)

Study population

RR 1.83 (1.39 to 2.40)

489
(4 studies)

⊕⊕⊕⊝
Moderateb

RR higher than 1 means that more participants in exercise groups reported improvement

218 per 1000

399 per 1000
(303 to 523)

Medium‐risk population

238 per 1000

436 per 1000
(331 to 571)

Drop‐out

(end of treatment)

Study population

RR 1.63 (0.77 to 3.43)

843

(6 studies)

⊕⊕⊝⊝
Lowb,g

RR higher than 1 means that more participants in exercise groups dropped out from treatment

70 per 1000

114 per 1000

(54 to 241)

Medium‐risk population

89 per 1000

145 per 1000

(69 to 305)

*The basis for the assumed risk (e.g. median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).
CI: Confidence interval; RR: Risk ratio.

GRADE Working Group grades of evidence.
High quality: Further research is very unlikely to change our confidence in the estimate of effect.
Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
Very low quality: We are very uncertain about the estimate.

aWe choose to present effect estimates as measured on the original scales rather than to transform them to standardised units. As 3 different scoring systems for fatigue were used, the outcome is presented over 3 rows.

bRisk of bias (‐1): All studies were at risk of performance bias, as they were unblinded.
cInconsistency (‐1): shows inconsistencies with other available trials when meta‐analysis based on standardised mean differences is performed. Subgroup analyses could not explain variation due to diagnostic criteria, treatment strategy or type of control.
dRisk of bias (0): This outcome is unlikely to have been affected by detection or performance bias.
eImprecision (‐1): low numbers of events and wide confidence intervals.
fImprecision (‐2): very low numbers of participants and wide confidence intervals, which encompass benefit and harm.
gInconsistency (‐1): variation in effect size and direction of effect across available studies.
hImprecision (‐1): Confidence interval fails to exclude negligible differences in favour of the intervention.

Figuras y tablas -
Table 1. Study demographics

Study ID

N

Gender

Duration of illness

Depression co‐morbidity

Use of antidepressants (ADs)

Work and employment status

Fulcher 1997

66

49F/17M

65% female

2.7 years

20 (30%) possible cases of depression (HADS)

30 (45%) on full‐dose AD (n = 20) or low‐dose AD (n = 10)

26 (39%) working or studying at least part time

Jason 2007

114

95F/19M

83% female

> 5.0 years

44 (39%) with a current Axis I disorder

(depression and anxiety most common)

Not stated

52 (46%) working or studying at least part time, 24% unemployed, 6% retired, 25% on disability

Moss‐Morris 2005

49

34F/15M

69% female

3.1 years

14 (29%) possible or probable cases of depression (HADS)

Not stated

11 (22%) were unemployed and were unable to work because of disability

Powell 2001

148

116F/32M

78% female

4.3 years

58 (39%) possible or probable cases of depression (HADS)

27 (18%) used AD

50 (34%) were working, 64 (43%) were on disability

Wallman 2004

61

47F/14M

77% female

Not stated

Not stated

16 (26%) used AD

Not stated

Wearden 1998

136

97F/39M

71% female

2.3 years

46 (34%) with depressive disorder according to DSM‐III‐R criteria

Not stated

114 (84%) had recently changed occupation

Wearden 2010

296

230F/66M

78% female

7.0 years

53 (18%) had a depression diagnosis

160 (54%) were prescribed AD in the past 6 months

Not stated

White 2011

641

495F/146M

77% female

2.7 years

219 (34%) with any depressive disorder

260 (41%) used AD

Not stated

Figuras y tablas -
Table 1. Study demographics
Table 2. Characteristics of exercise interventions

Study ID

Deliverer of intervention

Explanation and materials

Type of exercise

Schedule therapist

Schedule home

Duration of activity

Initial exercise level

Increment steps

Participant self‐monitoring

Criteria for (non)‐increment

Fulcher 1997

Exercise physiologist

Verbal explanation of deconditioning and reconditioning

Walking (encouraged to take other modes such as cycling and swimming)

Weekly

(1 hour), talking only

5 days/wk

5 to 15 minutes increasing to 30 minutes/d

5 to 15 minutes at 40% of peak O2 consumption

(target HR of resting + 50% of HRR)

Duration increased 1 to 2 minutes per week up to 30 minutes; then intensity increased

Ambulatory heart rate monitors

If increased fatigue, continue at the same level for an extra week

Wearden 1998

Physiotherapist,

fitness focus

Minimal explanation; no written materials

Preferred activity

(walking/jogging, some did cycling, swimming)

At week 0, 1, 2, 4, 8, 12*, 20, 26*,

talking only

(*evaluation visits)

3 days/wk

20 minutes

75% of VO2max from bike test

Intensity increased

Borg Exertion Scale chart, before and after HR

Increase if:
10 beats/min drop post exercise and 2‐point drop in Borg Scale score

Powell 2001

Senior clinical therapist

Explanations for GET, circadian dysrhythmia, deconditioning, sleep

"educational information pack"

Aerobic exercise;

own choice but mostly exercise bike

9 face‐to‐face

(1.5 hours each)

Tailored

Tailored to functional abilities

Tailored to functional abilities: “a level which you are capable of doing on a BAD DAY”

Varying daily increase (e.g. "5 second increase each day for the rest of the second week"

to 30 minutes twice/d

Duration of exercise

Discouraged, but restart at lower level and rapidly reincrease

Wallman 2004

Single physical therapist

Small laminated Borg Scale and heart rate monitor

Walking/jogging, swimming or cycling

Phone contact every 2 weeks

Every second day

From 5 to 15 minutes, increasing to 30 minutes

Initial exercise duration was between 5 and 15 minutes, and intensity was based on the mean HR value achieved midpoint during submaximal exercise tests 

Duration increased by 2 to 5 minutes/2 wk

Heart rate monitoring,

Borg Exertion Scale

Keep Borg within 11 to 14. Adjust every 2 weeks. Average peak HR when exercising comfortably at a typical day represents patient’s target heart rate (± 3 bpm) for future sessions

Moss‐Morris 2005

Health psychology MSc student, researcher

Focused on the "downward spiral of activity reduction, deconditioning"

Walking (but could also do other preferred exercise, e.g. jogging, swimming)

Weekly for 12 weeks, talking only

4 to 5 days/wk

Set collaboratively approx 5 to 15 minutes

HR at 40% of VO2max

Duration 3 to 5 minutes/wk

Intensity increased after 6 weeks 5 bpm/wk

Ambulatory heart rate monitors

If increased fatigue, continue at the same level for an extra week

Jason 2007

Registered nurses supervised by exercise physiologist

"Behavioral goals explained, energy system education, redefining exercise"

"individualized, constructive and pleasurable activities"

Every 2 weeks

(45 minutes),

13 sessions

3 per week

Tailored

Flexibility tests

Strength test (hand grip)

"Gradually increasing anaerobic activity levels"

Self‐monitoring daily exercise diary

New targets only after habituation, or if goals achieved for 2 weeks

Wearden 2010

Nurses with 16 half‐days of training and supervision

Explanation of physiological symptoms and training in first session

Wide choice: walking, stairs, bicycle, dance, jog

10 sessions over 18 weeks

Several times per day

First 90 minutes, then alternating 60 and 30 minutes

Determined collaboratively with the participant

"Increased very gradually," examples show 50% increase per day

Diary of progress on exercise programme, with note of daily activities

On "bad days," try to do same as day before

White 2011

Exercise therapist/physiotherapist

(8 to 10 days training + ongoing supervision)

142‐page manual:

benefits of exercise

and "how to" of GET; some got pedometers

Wide choice: walking, cycling, swimming, Tai Chi.

Aim to build into daily activities

Weekly × 4, then

fortnightly;

total of 15 sessions

5 to 6 days/wk

Negotiated, goal to get to 30 minutes per session

Test of fitness (step test. and 6‐minute walking test),

perceived physical exertion, actigraphy data

"20% increases" per fortnight; increase duration to 30 minutes, then increase intensity

Exercise diary + Borg scale +

“Use non‐symptoms to monitor” and

heart rate monitor

(for intensity increases)

Do not increase if global increase in symptoms

© 9. March 2012, Paul Glasziou, Bond University, Australia

Figuras y tablas -
Table 2. Characteristics of exercise interventions
Comparison 1. Exercise therapy versus treatment as usual, relaxation or flexibility

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Fatigue (end of treatment) Show forest plot

7

Mean Difference (IV, Random, 95% CI)

Subtotals only

1.1 Fatigue Scale, FS (11 items/0 to 11 points)

1

148

Mean Difference (IV, Random, 95% CI)

‐6.06 [‐6.95, ‐5.17]

1.2 Fatigue Scale, FS (11 items/0 to 33 points)

3

540

Mean Difference (IV, Random, 95% CI)

‐2.82 [‐4.07, ‐1.57]

1.3 Fatigue Scale, FS (14 items/0 to 42 points)

3

152

Mean Difference (IV, Random, 95% CI)

‐6.80 [‐10.31, ‐3.28]

2 Fatigue (follow‐up) Show forest plot

4

Mean Difference (IV, Random, 95% CI)

Subtotals only

2.1 Fatigue Scale, FS (11 items/0 to 11 points)

1

148

Mean Difference (IV, Random, 95% CI)

‐7.13 [‐7.97, ‐6.29]

2.2 Fatigue Scale, FS (11 items/0 to 33 points)

2

472

Mean Difference (IV, Random, 95% CI)

‐2.87 [‐4.18, ‐1.55]

2.3 Fatigue Severity Scale, FSS (9 items/1 to 7 points)

1

50

Mean Difference (IV, Random, 95% CI)

0.15 [‐0.55, 0.85]

3 Participants with serious adverse reactions Show forest plot

1

Risk Ratio (M‐H, Random, 95% CI)

Totals not selected

4 Pain (follow‐up) Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

4.1 Brief Pain Inventory, pain severity subscale (0 to 10 points)

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

4.2 Brief Pain Inventory, pain interference subscale (0 to 10 points)

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

5 Physical functioning (end of treatment) Show forest plot

5

Mean Difference (IV, Random, 95% CI)

Subtotals only

5.1 SF‐36, physical functioning subscale (0 to 100 points)

5

725

Mean Difference (IV, Random, 95% CI)

‐13.10 [‐24.22, ‐1.98]

6 Physical functioning (follow‐up) Show forest plot

3

Mean Difference (IV, Random, 95% CI)

Subtotals only

6.1 SF‐36, physical functioning subscale (0 to 100 points)

3

621

Mean Difference (IV, Random, 95% CI)

‐16.33 [‐36.74, 4.08]

7 Quality of life (follow‐up) Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

7.1 Quality of Life Scale (16 to 112 points)

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

8 Depression (end of treatment) Show forest plot

5

Mean Difference (IV, Random, 95% CI)

Subtotals only

8.1 HADS, depression score (7 items/21 points)

5

504

Mean Difference (IV, Random, 95% CI)

‐1.63 [‐3.50, 0.23]

9 Depression (follow‐up) Show forest plot

4

Mean Difference (IV, Random, 95% CI)

Subtotals only

9.1 Beck Depression Inventory (0 to 63 points)

1

45

Mean Difference (IV, Random, 95% CI)

3.44 [‐1.00, 9.88]

9.2 HADS, depression subscale (0 to 21 points)

3

609

Mean Difference (IV, Random, 95% CI)

‐2.26 [‐5.09, 0.56]

10 Anxiety (end of treatment) Show forest plot

3

Mean Difference (IV, Random, 95% CI)

Subtotals only

10.1 HADS, anxiety score (0 to 21 points)

3

387

Mean Difference (IV, Random, 95% CI)

‐1.48 [‐3.58, 0.61]

11 Anxiety (follow‐up) Show forest plot

4

Mean Difference (IV, Random, 95% CI)

Subtotals only

11.1 Beck Anxiety Inventory (0 to 63 points)

1

45

Mean Difference (IV, Random, 95% CI)

0.70 [‐4.52, 5.92]

11.2 HADS, anxiety score (0 to 21 points)

3

607

Mean Difference (IV, Random, 95% CI)

‐1.01 [‐2.75, 0.74]

12 Sleep (end of treatment) Show forest plot

2

Mean Difference (IV, Random, 95% CI)

Subtotals only

12.1 Jenkins Sleep Scale (0 to 20 points)

2

323

Mean Difference (IV, Random, 95% CI)

‐1.49 [‐2.95, ‐0.02]

13 Sleep (follow‐up) Show forest plot

3

Mean Difference (IV, Random, 95% CI)

Subtotals only

13.1 Jenkins Sleep Scale (0 to 20 points)

3

610

Mean Difference (IV, Random, 95% CI)

‐2.04 [‐3.84, ‐0.23]

14 Self‐perceived changes in overall health (end of treatment) Show forest plot

4

489

Risk Ratio (M‐H, Random, 95% CI)

1.83 [1.39, 2.40]

15 Self‐perceived changes in overall health (follow‐up) Show forest plot

3

518

Risk Ratio (M‐H, Random, 95% CI)

1.88 [0.76, 4.64]

16 Health resource use (follow‐up) [Mean no. of contacts] Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

16.1 Primary care

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

16.2 Other doctor

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

16.3 Healthcare professional

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

16.4 Inpatient

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

16.5 Accident and emergency

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

16.6 Other health/social services

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

16.7 Complementary health care

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

16.8 Standardised medical care

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

17 Health resource use (follow‐up) [No. of users] Show forest plot

1

Risk Ratio (M‐H, Random, 95% CI)

Totals not selected

17.1 Primary care

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

17.2 Other doctor

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

17.3 Healthcare professional

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

17.4 Inpatient

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

17.5 Accident and emergency

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

17.6 Medication

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

17.7 Complementary health care

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

17.8 Other health/social services

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

17.9 Standardised medical care

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

18 Drop‐out Show forest plot

6

843

Risk Ratio (M‐H, Random, 95% CI)

1.63 [0.77, 3.43]

19 Subgroup analysis for fatigue Show forest plot

7

840

Std. Mean Difference (IV, Random, 95% CI)

‐0.68 [‐1.02, ‐0.35]

19.1 Graded exercise therapy

6

779

Std. Mean Difference (IV, Random, 95% CI)

‐0.71 [‐1.09, ‐0.32]

19.2 Exercise with self‐pacing

1

61

Std. Mean Difference (IV, Random, 95% CI)

‐0.54 [‐1.05, ‐0.02]

Figuras y tablas -
Comparison 1. Exercise therapy versus treatment as usual, relaxation or flexibility
Comparison 2. Exercise therapy versus psychological treatment

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Fatigue at end of treatment (FS; 11 items/0 to 33 points) Show forest plot

2

Mean Difference (IV, Random, 95% CI)

Totals not selected

1.1 CBT

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

1.2 Supportive listening

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

2 Fatigue at follow‐up (FSS; 1 to 7 points) Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

2.1 CT

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

2.2 CBT

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

3 Fatigue at follow‐up (FS; 11 items/0 to 33 points) Show forest plot

2

Mean Difference (IV, Random, 95% CI)

Totals not selected

3.1 CBT

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

3.2 Supportive listening

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

4 Participants with serious adverse reactions Show forest plot

2

Risk Ratio (M‐H, Random, 95% CI)

Totals not selected

4.1 CBT

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

4.2 Suportive listening

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

5 Pain at follow‐up (BPI, pain severity subscale; 0 to 10 points) Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

5.1 CBT

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

5.2 CT

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

6 Pain at follow‐up (BPI, pain interference subscale; 0 to 10 points) Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

6.1 CBT

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

6.2 CT

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

7 Physical functioning at end of treatment (SF‐36, physical functioning subscale; 0 to 100 points) Show forest plot

2

Mean Difference (IV, Random, 95% CI)

Totals not selected

7.1 CBT

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

7.2 Supportive listening

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

8 Physical functioning at follow‐up (SF‐36, physical functioning subscale; 0 to 100 points) Show forest plot

3

Mean Difference (IV, Random, 95% CI)

Subtotals only

8.1 CBT

2

348

Mean Difference (IV, Random, 95% CI)

7.92 [‐9.79, 25.63]

8.2 CT

1

47

Mean Difference (IV, Random, 95% CI)

21.37 [6.61, 36.13]

8.3 Supportive listening

1

171

Mean Difference (IV, Random, 95% CI)

‐7.55 [‐15.57, 0.47]

9 Depression at end of treatment (HADS depression score; 7 items/21 points) Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

9.1 Supportive listening

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

10 Depression at follow‐up (BDI; 0 to 63 points) Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

10.1 CT

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

10.2 CBT

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

11 Depression at follow‐up (HADS depression score; 7 items/21 points) Show forest plot

2

Mean Difference (IV, Random, 95% CI)

Totals not selected

11.1 CBT

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

11.2 Supportive listening

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

12 Anxiety at end of treatment (HADS anxiety; 7 items/21 points) Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

12.1 Supportive listening

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

13 Anxiety at follow‐up (BAI; 0 to 63 points) Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

13.1 CT

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

13.2 CBT

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

14 Anxiety at follow‐up (HADS anxiety; 7 items/21 points) Show forest plot

2

Mean Difference (IV, Random, 95% CI)

Totals not selected

14.1 CBT

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

14.2 Supportive listening

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

15 Sleep at end of treatment (Jenkins Sleep Scale; 0 to 20 points) Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

15.1 Supportive listening

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

16 Sleep at follow‐up (Jenkins Sleep Scale; 0 to 20 points) Show forest plot

2

Mean Difference (IV, Random, 95% CI)

Totals not selected

16.1 CBT

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

16.2 Supportive listening

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

17 Self‐perceived changes in overall health at end of treatment Show forest plot

1

Risk Ratio (M‐H, Random, 95% CI)

Totals not selected

17.1 CBT

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

18 Self‐perceived changes in overall health at follow‐up Show forest plot

2

Risk Ratio (M‐H, Random, 95% CI)

Subtotals only

18.1 CT

1

50

Risk Ratio (M‐H, Random, 95% CI)

0.63 [0.36, 1.10]

18.2 CBT

2

368

Risk Ratio (M‐H, Random, 95% CI)

0.71 [0.33, 1.54]

19 Health resource use (follow‐up) [Mean no. of contacts] Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

19.1 Primary care

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

19.2 Other doctor

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

19.3 Healthcare professional

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

19.4 Inpatient

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

19.5 Accident and emergency

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

19.6 Other health/social services

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

19.7 Complementary health care

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

19.8 Standardised medical care

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

20 Health resource use (follow‐up) [No. of users] Show forest plot

1

Risk Ratio (M‐H, Random, 95% CI)

Totals not selected

20.1 Primary care

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

20.2 Other doctor

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

20.3 Healthcare professional

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

20.4 Inpatient

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

20.5 Accident and emergency

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

20.6 Medication

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

20.7 Complementary health care

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

20.8 Other health/social services

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

20.9 Standardised medical care

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

21 Drop‐out Show forest plot

2

Risk Ratio (M‐H, Random, 95% CI)

Totals not selected

21.1 CBT

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

21.2 Supportive listening

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

Figuras y tablas -
Comparison 2. Exercise therapy versus psychological treatment
Comparison 3. Exercise therapy versus adaptive pacing

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Fatigue Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

1.1 Fatigue Scale, FS (11 items/33 points)—end of treatment

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

1.2 Fatigue Scale, FS (11 items/33 points)—follow‐up

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

2 Participants with serious adverse reactions Show forest plot

1

Risk Ratio (M‐H, Random, 95% CI)

Totals not selected

3 Physical functioning Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

3.1 SF‐36, physical functioning subscale (0 to 100)—end of treatment

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

3.2 SF‐36, physical functioning subscale (0 to 100)—follow‐up

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

4 Depression Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

4.1 HADS, depression score (7 items/21 points)—follow‐up

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

5 Anxiety Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

5.1 HADS, anxiety score (0 to 21 points)—follow‐up

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

6 Sleep Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

6.1 Jenkins Sleep Scale (0 to 20 points)—follow‐up

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

7 Self‐perceived changes in overall health Show forest plot

1

Risk Ratio (M‐H, Random, 95% CI)

Totals not selected

7.1 End of treatment

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

7.2 Follow‐up

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

8 Health resource use (follow‐up) [Mean no. of contacts] Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

8.1 Primary care

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

8.2 Other doctor

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

8.3 Healthcare professional

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

8.4 Inpatient

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

8.5 Accident and emergency

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

8.6 Other health/social services

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

8.7 Complementary health care

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

8.8 Standardised medical care

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

9 Health resource use (follow‐up) [No. of users] Show forest plot

1

Risk Ratio (M‐H, Random, 95% CI)

Totals not selected

9.1 Primary care

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

9.2 Other doctor

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

9.3 Healthcare professional

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

9.4 Inpatient

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

9.5 Accident and emergency

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

9.6 Medication

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

9.7 Complementary health care

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

9.8 Other health/social services

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

9.9 Standardised medical care

1

Risk Ratio (M‐H, Random, 95% CI)

0.0 [0.0, 0.0]

10 Drop‐out Show forest plot

1

Risk Ratio (M‐H, Random, 95% CI)

Totals not selected

Figuras y tablas -
Comparison 3. Exercise therapy versus adaptive pacing
Comparison 4. Exercise therapy + antidepressant placebo versus antidepressant + exercise placebo

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Fatigue Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

1.1 Fatigue Scale, FS (14 items/0 to 42 points)—end of treatment

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

2 Depression Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

2.1 HADS, depression score (7 items/21 points)—end of treatment

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

3 Drop‐out Show forest plot

1

Risk Ratio (M‐H, Random, 95% CI)

Totals not selected

Figuras y tablas -
Comparison 4. Exercise therapy + antidepressant placebo versus antidepressant + exercise placebo
Comparison 5. Exercise therapy + antidepressant versus antidepressant + exercise placebo

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Fatigue Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

1.1 Fatigue Scale, FS (14 items/0 to 42 points)—end of treatment

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

2 Depression Show forest plot

1

Mean Difference (IV, Random, 95% CI)

Totals not selected

2.1 HADS, depression score (7 items/21 points)—end of treatment

1

Mean Difference (IV, Random, 95% CI)

0.0 [0.0, 0.0]

3 Drop‐out Show forest plot

1

Risk Ratio (M‐H, Random, 95% CI)

Totals not selected

Figuras y tablas -
Comparison 5. Exercise therapy + antidepressant versus antidepressant + exercise placebo