Three articles on PainSci cite Halperin 2015: 1. The Complete Guide to Trigger Points & Myofascial Pain 2. A Deep Dive into Delayed-Onset Muscle Soreness 3. Cramps, Spasms, Tremors & Twitches
PainSci notes on Halperin 2015:
Wear out your glutes or pecs … feel it in your cloits n dloits? Some experiments has been able to demonstrate this weirdness, others have not, and so it’s ontologically ambiguous (see Behm). If it exists, it seems to involve multiple pathways: “neurological, biochemical, biomechanical, and psychological.”
And, if it exists, it obviously has Interesting Implications. If muscles you didn’t even exercise can feel exhausted, it’s equally plausible that they can also suffer other consequences. Like pain.
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.
INTRODUCTION: Non-local muscle fatigue (NLMF) is characterized by muscle performance impairments in a contralateral or remote non-exercised muscle(s) following a fatiguing protocol of a different muscle group(s). This topic is of interest as it affords insights into physiological determinants of muscle fatigue and may provide practical applications concerning the order of exercises in training and rehabilitation programs.
METHODS: A literature review was conducted using Web of Science, PubMed, and Google Scholar databases to evaluate the NLMF effects and possible underlying mechanisms. Overall, 35 studies with 58 outcome measures that met the inclusion criteria were identified.
RESULTS: The literature is conflicting with approximately half of the studies reporting NLMF effects (32 of 58 measurements). However, on closer examination 76 % of outcome measures of the lower limbs reported NLMF effects (23 of 30 measurements) compared to only 32 % in the upper body (9 of 28 measurements). Thus, it appears that NLMF effects may be muscle group dependent. Also, tests that involve prolonged or repetitive contractions provide clearer evidence of NLMF. Other variables potentially influencing the size of the NLMF effect include the fatigued muscle groups, the protocols used to elicit the fatigue, gender and training background of participants.
CONCLUSION: While the NLMF literature is conflicting, certain variables appear to affect NLMF responses which can account for some of the discrepancies. Furthermore, the NLMF effects may be attributed to four different but interconnected pathways: neurological, biochemical, biomechanical and psychological.
- “Non-local muscle fatigue effects on muscle strength, power, and endurance in healthy individuals: A systematic review and meta- analysis,” David Behm, Shahab Alizadeh, Saman Anvar, Courtney Hanlon, Emma Ramsay, Mamdouh Mahmoud, Joseph Whitten, James Fisher, Olaf Prieske, Helmi Chaabene, Urs Granacher, and James Steele, SportRxiv, 2020.
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.