Two articles on PainSci cite Belavy 2016: 1. Complete Guide to Low Back Pain 2. 6 Main Causes of Morning Back Pain
PainSci notes on Belavy 2016:
Astronauts get more intervertebral disc herniations when they come down to Earth, probably because the darn things swell up in zero-G. We’re used to thinking about disc herniation as something that happens because of gravity … not because it’s absent! I’m sure most of us probably assume that taking the pressure off is nice for spines (and maybe it is while you’re still floating around).
But apparently discs get a bit poofy and unstable if you don’t keep the pressure on ‘em.
original abstract †Abstracts here may not perfectly match originals, for a variety of technical and practical reasons. Some abstacts are truncated for my purposes here, if they are particularly long-winded and unhelpful. I occasionally add clarifying notes. And I make some minor corrections.
PURPOSE: Recent work showed an increased risk of cervical and lumbar intervertebral disc (IVD) herniations in astronauts. The European Space Agency asked the authors to advise on the underlying pathophysiology of this increased risk, to identify predisposing factors and possible interventions and to suggest research priorities.
METHODS: The authors performed a narrative literature review of the possible mechanisms, and conducted a survey within the team to prioritize research and prevention approaches.
RESULTS AND CONCLUSIONS: Based on literature review the most likely cause for lumbar IVD herniations was concluded to be swelling of the IVD in the unloaded condition during spaceflight. For the cervical IVDs, the knowledge base is too limited to postulate a likely mechanism or recommend approaches for prevention. Basic research on the impact of (un)loading on the cervical IVD and translational research is needed. The highest priority prevention approach for the lumbar spine was post-flight care avoiding activities involving spinal flexion, followed by passive spinal loading in spaceflight and exercises to reduce IVD hyper-hydration post-flight.
- “Hypertrophy in the cervical muscles and thoracic discs in bed rest?,” Daniel L Belavý, Tanja Miokovic, Gabriele Armbrecht, and Dieter Felsenberg, J Appl Physiol (1985), 2013.
- “Changes in water content of intervertebral discs and paravertebral muscles before and after bed rest,” Yoshihiro Matsumura, Yuichi Kasai, Hideaki Obata, Shigeru Matsushima, Tadashi Inaba, and Atsumasa Uchida, Journal of Orthopaedic Science, 2009.
This page is part of the PainScience BIBLIOGRAPHY, which contains plain language summaries of thousands of scientific papers & others sources. It’s like a highly specialized blog. A few highlights:
- Photobiomodulation therapy is not better than placebo in patients with chronic nonspecific low back pain: a randomised placebo-controlled trial. Guimarães 2021 Pain.
- No effect of creatine monohydrate supplementation on inflammatory and cartilage degradation biomarkers in individuals with knee osteoarthritis. Cornish 2018 Nutr Res.
- The CANBACK trial: a randomised, controlled clinical trial of oral cannabidiol for people presenting to the emergency department with acute low back pain. Bebee 2021 Med J Aust.
- Relationships Between Sleep Quality and Pain-Related Factors for People with Chronic Low Back Pain: Tests of Reciprocal and Time of Day Effects. Gerhart 2017 Ann Behav Med.
- Modulation in the elastic properties of gastrocnemius muscle heads in individuals with plantar fasciitis and its relationship with pain. Zhou 2020 Sci Rep.