Exploring Neuromuscular Electrical Stimulation Intensity Effects on Multifidus Muscle Activity in Adults With Chronic Low Back Pain: An Ultrasound Imaging–Informed Investigation

Autor:	Gregory E. Hicks, DeJ’a Chyanna Crippen, Jaclyn Megan Sions, Ryan T. Pohlig, Tara Jo Manal, Abdulmohsen Meshari Alroumi
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	medicine.medical_specialty lcsh:Diseases of the musculoskeletal system Stimulation spine Back muscles Multifidus muscle Lumbosacral region 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation Rheumatology medicine Immunology and Allergy 030212 general & internal medicine Original Research back muscles business.industry ultrasonography Chronic low back pain Intensity (physics) Ultrasound imaging lcsh:RC925-935 Ultrasonography business 030217 neurology & neurosurgery lumbosacral region
Zdroj:	Clinical Medicine Insights. Arthritis and Musculoskeletal Disorders Clinical Medicine Insights: Arthritis and Musculoskeletal Disorders, Vol 12 (2019)
ISSN:	1179-5441
Popis:	Study design: Cross-sectional study. Background: Neuromuscular electrical stimulation (NMES) is an effective tool for stimulating multifidus muscle contractions. Ultrasound imaging (USI) is valid and reliable for quantifying multifidus activity represented by percent thickness change from a resting to contracted state. Thus, USI may be used to help determine optimal NMES intensity. Objectives: To explore NMES intensity effects on multifidus thickening in adults with chronic low back pain (CLBP). Methods: Sixty patients with CLBP participated. L4/5 multifidus ultrasound images were obtained and percent thickness change from a resting to a contracted state was determined at baseline with a limb lift and during NMES application. During NMES, the examiner recorded the intensity, in milliampere, when the multifidus first started to thicken as observed with USI. The examiner also recorded the NMES intensity that resulted in no further multifidus thickening (ie, high-tolerance group) or, in cases where maximal thickening was not observed, the NMES intensity of the submaximal contraction (ie, low-tolerance group). Differences between participants with high versus low NMES tolerance were evaluated. Results: During NMES, the multifidus began thickening at a higher intensity for the high-tolerance group (n = 39), that is, 34 mA, compared with the low-tolerance group (n = 21), that is, 32 mA ( P = .001). A greater mean intensity in the high-tolerance group, that is, 62 mA, as compared to 45 mA in the low-tolerance group, resulted in a larger percent thickness change, that is, 30.89% compared to 20.60%, respectively ( P Conclusions: Results provide clinicians with NMES intensity targets to facilitate multifidus muscle thickening, which provides insight into muscle activity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5ab189c385199279d763eafef3543589 http://europepmc.org/articles/PMC6535907 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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