Van Oosterwijck, Jessica, Nijs, Jo, Meeus, Mira et al. · The journal of pain · 2012 · DOI
This study compared how the body responds to exercise in people with chronic whiplash injury versus healthy people. Researchers found that pain sensitivity actually increased (got worse) after exercise in whiplash patients, while it decreased (improved) in healthy controls. Importantly, gentle, self-paced exercise caused fewer symptom flare-ups than harder, fixed-intensity exercise, suggesting that how exercise is done matters greatly for people with this condition.
This study is highly relevant to ME/CFS because both conditions involve abnormal central pain processing and post-exertional symptom worsening. The finding that standardized exercise triggers pain sensitization and symptom increases parallels post-exertional malaise in ME/CFS, and the suggestion that individualized, self-paced exercise is better tolerated has important implications for exercise prescription in both conditions.
This study does not prove that the same central pain processing abnormalities occur in ME/CFS patients, as it specifically examined whiplash-associated disorders. It also does not establish the mechanisms underlying the impaired endogenous pain inhibition, nor does it demonstrate whether self-paced exercise is universally safe or effective across all WAD patients or in other populations with post-exertional malaise.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
The first block is for the primary paper and is the citation you should use in research work. The atlas-snapshot line only applies if you are specifically referring to this atlas’s reading of the paper on the date shown.
Primary citation
Van Oosterwijck, Jessica, Nijs, Jo, Meeus, Mira, Van Loo, Michel, & Paul, Lorna (2012). Lack of endogenous pain inhibition during exercise in people with chronic whiplash associated disorders: an experimental study.. The journal of pain. https://doi.org/10.1016/j.jpain.2011.11.006
BibTeX
@article{mecfsatlas-van-oosterwijck-2012-lack-endogenous,
author = {Van Oosterwijck, Jessica and Nijs, Jo and Meeus, Mira and Van Loo, Michel and Paul, Lorna},
title = {Lack of endogenous pain inhibition during exercise in people with chronic whiplash associated disorders: an experimental study.},
journal = {The journal of pain},
year = {2012},
doi = {10.1016/j.jpain.2011.11.006},
note = {PubMed: 22277322},
url = {https://www.mecfsatlas.com/evidence/van-oosterwijck-2012-lack-endogenous},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-27. https://www.mecfsatlas.com/evidence/van-oosterwijck-2012-lack-endogenous
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