Evidence map›Paper›PMID 35420586›Full record

ArticlePsychosomatic medicine

Nonimprovement in Chronic Fatigue Syndrome: Relation to Activity Patterns, Uplifts and Hassles, and Autonomic Dysfunction.

Fred Friedberg, Jenna L Adamowicz, Patricia Bruckenthal, Maria Milazzo, Sameera Ramjan, Daniel Quintana

Registry-linked trialAbstract read
In one paragraph

Article in Psychosomatic medicine. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02948556 (ME/CFS), which is not on this map. Cited by 7 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT02948556 unknown statusnot on this map

ME/CFS: Activity Patterns and Autonomic Dysfunction

TypeobservationalSponsorStony Brook UniversityRan2016 to 2020Enrolled150ConditionsChronic Fatigue Syndrome
3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Recent research in myalgic encephalomyelitis/chronic fatigue syndrome: an evidence map.Health technology assessment (Winchester, England) · 2025
    Pooled it
  2. Pooled it
  3. Review
  4. Review
  5. Article
  6. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Fred FriedbergFrom the School of Medicine, Stony Brook University (Friedberg), Stony Brook, New York; Psychological and Brain Sciences, University of Iowa (Adamowicz), Iowa City, Iowa; School of Nursing, Stony Brook University (Bruckenthal, Milazzo), Stony Brook; Memorial Sloan Kettering Cancer Center (Ramjan), New York, New York; and Oslo University Hospital (Quintana), Oslo, Norway.
Jenna L Adamowicz
Patricia Bruckenthal
Maria Milazzo
Sameera Ramjan
Daniel Quintana

Funding

X-RAY CRYSTALLOGRAPHYP30CA008748 · NCI · SLOAN-KETTERING INSTITUTE FOR CANCER RES · PI Hongbiao Carl Lekaye · 1985 to 2026
$347.4M
Mechanisms of Health and Disease at the Behavioral-Biomedical InterfaceT32GM108540 · NIGMS · UNIVERSITY OF IOWA · PI LUTGENDORF, SUSAN K, VOSS, MICHELLE WEBB · 2014 to 2023
$1.7M
Sex differences in exercise-related post-exertional malaise in ME/CFSR01NR015850 · NINR · STATE UNIVERSITY NEW YORK STONY BROOK · PI FRIEDBERG, FRED · 2016 to 2019
$1.6M
NCI NIH HHS P30 CA008748NIGMS NIH HHS T32 GM108540NINR NIH HHS R01 NR015850
6 · The paper itself

Abstract

objectiveTo test a model of nonimprovement in chronic fatigue syndrome (CFS) using self-report activity patterns (e.g., "push-crash"), uplifts and hassles, and a biological measure of cardiac autonomic function. Activity pattern impacts on symptoms and objective measures of autonomic and physical activity were also examined.

methodsThis prospective study in CFS collected all data remotely, including 6 months of weekly web diaries that recorded symptom ratings, activity patterns, and hassles and uplifts. In addition, 6 months of weekly heart monitoring and 3 months of daily waking actigraphy data were collected. Improvement or nonimprovement status was assessed using semistructured interviews at the 6-month follow-up.

resultsA total of 148 individuals (87.2% female) were enrolled, and 12.2% were lost to follow-up. Participants reporting nonimprovement ( n = 92), as compared with improvement ( n = 38), showed greater autonomic dysfunction (lower heart rate variability, group difference = 5.93 [SE = 2.73] milliseconds; p = .032) and lower mean intensity of behavioral uplifts (group difference = 0.14 [SE = 0.16]; p = .043), but no significant differences in any activity pattern, including push-crash, limiting activity, and healthy pacing.

conclusionsThis study provided evidence for linking patient-reported nonimprovement to a biological variable indexing autonomic dysfunction and a behavioral measure indicating a deficit in psychological uplifts. These findings suggest a possible marker of illness trajectory that could potentially advance the biomedical underpinnings of CFS.Trial Registration:ClinicalTrials.gov ID: NCT02948556.

Indexed as

Autonomic Nervous System DiseasesFatigue Syndrome, ChronicAutonomic Nervous SystemFemaleHeart RateHumansMaleProspective StudiesStress, Psychological

Identifiers

PMID35420586
PMCPMC9271593

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.