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https://www.readbyqxmd.com/read/28719508/is-the-organisation-of-the-primary-motor-cortex-in-low-back-pain-related-to-pain-movement-and-or-sensation
#1
Edith Elgueta-Cancino, Siobhan Schabrun, Paul Hodges
Primary motor cortex (M1) organisation differs between individuals with and without chronic low back pain (CLBP), in parallel with motor and sensory impairments. This study investigated whether movement behaviour and tactile/pain sensation are related to M1 organisation in CLBP. Transcranial magnetic stimulation (TMS) was used to map the M1 representation of the erector spinae and multifidus muscles in 20 participants with and without CLBP. Cortical organisation was quantified by: map volume; center of gravity (CoG); number of peaks; and primary and secondary peak location...
July 17, 2017: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28715299/test-retest-reliability-of-measurements-of-abdominal-and-multifidus-muscles-using-ultrasound-imaging-in-adults-aged-50-79-years
#2
W A Cuellar, L Blizzard, M L Callisaya, J A Hides, G Jones, C Ding, T M Winzenberg
Test-retest reliability of the combined process of ultrasound imaging (USI) and image measurement of thickness of abdominal and upper lumbar multifidus (MF) muscles and MF cross sectional area (CSA) of older adults has not been established. Imaging muscles of older adults can be challenging due to age-related changes in the spine and skeletal muscle so establishing test-retest reliability in this population is important. This study aimed to evaluate test-retest reliability of USI of abdominal and MF muscle thickness and MF CSA for adults aged 50-79 years...
April 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28698963/change-in-fatty-infiltration-of-lumbar-multifidus-erector-spinae-and-psoas-muscles-in-asymptomatic-adults-of-asian-or-caucasian-ethnicities
#3
Rebecca J Crawford, James M Elliott, Thomas Volken
PURPOSE: Fatty infiltration (FI) is a feature of degenerating muscle that predominates in the low lumbar spine, associates with pain, and is confounded by age, spinal degeneration, and curvature. We determined rates for decline of lumbar muscle quality according to ethnicity, muscle, and spinal level in asymptomatic subjects. METHODS: Cross-sectional simulation study assessing aggregated data; 650 Asians aged 20-89 years versus 80 Caucasians aged 20-62 years. Change in lumbar multifidus, erector spinae (ES), and psoas fat content were computed using synthetic data and Monte Carlo simulations...
July 11, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28673735/properties-of-paraspinal-muscles-in-japanese-high-school-baseball-players-with-terminal-stage-lumbar-spondylolysis
#4
Hiroyuki Tsuboi, Yukihide Nishimura, Takeshi Sakata, Hideaki Tanina, Hideki Arakawa, Takeshi Nakamura, Yuichi Umezu, Fumihiro Tajima
BACKGROUND: Lumbar spondylolysis is a defect in the pars interarticularis that is common in young athletes; the stress distribution at the pars interarticularis is the highest in extension and rotation movements. The paraspinal muscles play an important role in stabilization of the lumbar spine; however, no study has assessed the properties of paraspinal muscles in athletes with lumbar spondylolysis. OBJECTIVE: To evaluate the properties of paraspinal muscles in athletes with lumbar spondylolysis...
June 30, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28667897/rate-of-force-development-and-muscle-activation-of-trunk-muscles-in%C3%A2-women-with-and-without-low-back-pain-a-case-control-study
#5
Denise Martineli Rossi, Mary Hellen Morcelli, Adalgiso Coscrato Cardozo, Benedito Sérgio Denadai, Mauro Gonçalves, Marcelo Tavella Navega
OBJECTIVE: To evaluate the rate of force development (RFD) and the rate of electromyography rise (RER) of global and local trunk muscles in women with and without low back pain. DESIGN: Cross-sectional study. SETTING: Laboratory setting. PARTICIPANTS: Twenty-eight women divided into low back pain (LBP, n = 14) and control groups (CG, n = 14) participated in this study. MAIN OUTCOME MEASURES: Subjects performed isometric contractions of trunk using an isokinetic dynamometer, and simultaneously the electromyography (EMG) signals were collected for global (rectus abdominis and longissimus thoracic) and local (internal oblique and multifidus) muscles...
July 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28640896/beneficial-effects-of-a-gait-used-while-wearing-a-kimono-to-decrease-the-knee-adduction-moment-in-healthy-adults
#6
Susumu Ota, Yukari Ogawa, Hiroki Ota, Tomoya Fujiwara, Tadashi Sugiyama, Akira Ochi
The knee adduction moment (KAM) relates to medial knee osteoarthritis (OA). Several gait modifications to reduce the KAM for the prevention of knee OA have been studied. Most of the modifications, however, involve voluntary changes in leg alignment. Here we investigated the biomechanical effects for reducing the KAM of a walking style with a small trunk rotation and arm swing gait, which is a natural walking style used while wearing a kimono (Nanba walk) that shifts the ground reaction force toward the stance leg (reduced lever arm)...
2017: PloS One
https://www.readbyqxmd.com/read/28634547/kinesiophobia-pain-muscle-functions-and-functional-performances-among-older-persons-with-low-back-pain
#7
Nor Azizah Ishak, Zarina Zahari, Maria Justine
OBJECTIVES: This study aims (1) to determine the association between kinesiophobia and pain, muscle functions, and functional performances and (2) to determine whether kinesiophobia predicts pain, muscle functions, and functional performance among older persons with low back pain (LBP). METHODS: This is a correlational study, involving 63 institutionalized older persons (age = 70.98 ± 7.90 years) diagnosed with LBP. Anthropometric characteristics (BMI) and functional performances (lower limb function, balance and mobility, and hand grip strength) were measured...
2017: Pain Research and Treatment
https://www.readbyqxmd.com/read/28633669/impact-of-exercise-programs-among-helicopter-pilots-with-transient-lbp
#8
Knut Andersen, Roald Baardsen, Ingvild Dalen, Jan Petter Larsen
BACKGROUND: Flight related low back pain (LBP) among helicopter pilots is frequent and may influence flight performance. Prolonged confined sitting during flights seems to weaken lumbar trunk (LT) muscles with associated secondary transient pain. Aim of the study was to investigate if structured training could improve muscular function and thus improve LBP related to flying. METHODS: 39 helicopter pilots (35 men and 4 women), who reported flying related LBP on at least 1 of 3 missions last month, were allocated to two training programs over a 3-month period...
June 20, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28615336/prevention-and-reversal-of-latent-sensitization-of-dorsal-horn-neurons-by-glial-blockers-in-a-model-of-low-back-pain-in-male-rats
#9
Juanjuan Zhang, Siegfried Mense, Rolf-Detlef Treede, Ulrich Hoheisel
In an animal model of non-specific low back pain, recordings from dorsal horn neurons were made to investigate the influence of glial cells in the central sensitization process. To induce a latent sensitization of the neurons, nerve growth factor (NGF) was injected into the multifidus muscle; the manifest sensitization to a second NGF injection 5 days later was used as a read-out. The sensitization manifested in increased resting activity and in an increased proportion of neurons responding to stimulation of deep somatic tissues...
June 14, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28585998/correlation-of-the-features-of-the-lumbar-multifidus-muscle-with-facet-joint-osteoarthritis
#10
Bo Yu, Kaibiao Jiang, Xinfeng Li, Jidong Zhang, Zude Liu
Facet joint osteoarthritis is considered a consequence of the aging process; however, there is evidence that it may be associated with degenerative changes of other structures. The goal of this study was to investigate the correlation between lumbar multifidus muscle features and facet joint osteoarthritis. This retrospective study included 160 patients who had acute or chronic low back pain and were diagnosed with facet joint osteoarthritis on computed tomography scan. Morphometric parameters, including cross-sectional area, muscle-fat index, and percentage of bilateral multifidus asymmetry at L3-L4, L4-L5, and L5-S1, were evaluated with T2-weighted magnetic resonance imaging...
June 6, 2017: Orthopedics
https://www.readbyqxmd.com/read/28584310/effects-of-external-loading-on-lumbar-extension-moment-during-squat-lifting
#11
Iman Vahdat, Mostafa Rostami, Farhad Tabatabai Ghomsheh, Siamak Khorramymehr, Ali Tanbakoosaz
OBJECTIVES: The main objective of this study has been qualitative investigation of the effects of external loading on the lumbar extension moment during squat lifting. Findings of this study may allow to determine the factor with the most considerable effect on the lumbar extension moment and may help determine the lumbar spine risk factors at temporo-spatial coordination during squat lifting. MATERIAL AND METHODS: Twelve healthy men volunteered to perform slow and fast squat lifting of a box of varied mass (4 kg, 8 kg and 12 kg)...
May 29, 2017: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/28582894/a-study-on-trunk-muscle-activation-patterns-according-to-tilt-angle-during-whole-body-tilts
#12
Sun Hye Shin, Seung Rok Kang, Tae-Kyu Kwon, Changho Yu
BACKGROUND: Lower back pain has a lifetime prevalence of 80% for people in a modern society, and in recent years, spinal stabilization movement has been highlighted as a method to treat lower back pain and an unbalanced position. OBJECTIVE: The objectives of this study were to assess the trunk muscle activities in accordance with the tilt angles (10∘, 20∘, 30∘, 40∘) during trunk tilt exercises with a 3D dynamic exercise device. METHODS: Active tilt mode (a self-generated active movement in the angle and direction steered by the user) was used in this study...
May 19, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28560116/infrared-thermography-applied-to-lower-limb-muscles-in-elite-soccer-players-with-functional-ankle-equinus-and-non-equinus-condition
#13
David Rodríguez-Sanz, Marta Elena Losa-Iglesias, Daniel López-López, César Calvo-Lobo, Patricia Palomo-López, Ricardo Becerro-de-Bengoa-Vallejo
Gastrocnemius-soleus equinus (GSE) is a foot-ankle complaint in which the extensibility of the gastrocnemius (G) and soleus muscles (triceps surae) and ankle are limited to a dorsiflexion beyond a neutral ankle position. The asymmetric forces of leg muscles and the associated asymmetric loading forces might promote major activation of the triceps surae, tibialis anterior, transverses abdominal and multifidus muscles. Here, we made infrared recordings of 21 sportsmen (elite professional soccer players) before activity and after 30 min of running...
2017: PeerJ
https://www.readbyqxmd.com/read/28559851/estimating-neural-control-from-concentric-vs-eccentric-surface-electromyographic-representations-during-fatiguing-cyclic-submaximal-back-extension-exercises
#14
Gerold R Ebenbichler, Lena Unterlerchner, Richard Habenicht, Paolo Bonato, Josef Kollmitzer, Patrick Mair, Sara Riegler, Thomas Kienbacher
Purpose: To investigate the differences in neural control of back muscles activated during the eccentric vs. the concentric portions of a cyclic, submaximal, fatiguing trunk extension exercise via the analysis of amplitude and time-frequency parameters derived from surface electromyographic (SEMG) data. Methods: Using back dynamometers, 87 healthy volunteers performed three maximum voluntary isometric trunk extensions (MVC's), an isometric trunk extension at 80% MVC, and 25 cyclic, dynamic trunk extensions at 50% MVC...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28536754/movement-amplitude-on-the-functional-re-adaptive-exercise-device-deep-spinal-muscle-activity-and-movement-control
#15
A Winnard, D Debuse, M Wilkinson, L Samson, T Weber, Nick Caplan
PURPOSE: Lumbar multifidus (LM) and transversus abdominis (TrA) show altered motor control, and LM is atrophied, in people with low-back pain (LBP). The Functional Re-adaptive Exercise Device (FRED) involves cyclical lower-limb movement against minimal resistance in an upright posture. It has been shown to recruit LM and TrA automatically, and may have potential as an intervention for non-specific LBP. However, no studies have yet investigated the effects of changes in FRED movement amplitude on the activity of these muscles...
May 23, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28509432/feasibility-assessment-of-shear-wave-elastography-to-lumbar-back-muscles-a-radioanatomic-study
#16
Maud Creze, Krystel Nyangoh Timoh, Olivier Gagey, Laurence Rocher, Marie-France Bellin, Marc Soubeyrand
INTRODUCTION: Low back pain is often associated with tensional changes in the paraspinal muscles detected by palpatory procedures. Shear wave elastography (SWE), recently introduced, allows the stiffness of muscles to be assessed non-invasively. The aim of our work was to study the feasibility of using SWE on the three main lumbar back muscles (multifidus, longissimus and iliocostalis) in vivo after analyzing their muscular architecture ex vivo. MATERIALS AND METHODS: We determined the orientation of fibers in the multifidus, longissimus and iliocotalis muscles in seven fresh cadavers using gross anatomy and B-Mode ultrasound imaging...
May 16, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28505951/reliability-of-mechanomyographic-amplitude-measurements-for-trunk-muscles-during-maximal-voluntary-isometric-contraction
#17
How Hing Ng, Wen-Yen Lin, Kin Fong Lei, Chih-Hsiu Cheng, Shiau-Chian Jeng, Yang-Hua Lin
BACKGROUND: Mechanomyography (MMG) has been used to investigate mechanical characteristics of muscle contraction in clinical and experimental settings. OBJECTIVE: The aim of this study was to determine the test-retest reliability of mechanomyographic amplitude (MMGRMS) measurements as a tool for measuring the maximal voluntary isometric contractions (MVICs) of trunk muscles in healthy participants. METHODS: There were ten young adults participating in this study...
May 5, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28502411/abdominal-bracing-during-lifting-alters-trunk-muscle-activity-and-body-kinematics
#18
Pieter Coenen, Amity Campbell, Kevin Kemp-Smith, Peter O'Sullivan, Leon Straker
We assessed whether participants are able to perform abdominal bracing during lifting, and described its effects on trunk muscle activity and body kinematics. Fourteen participants performed 10 lifts (symmetrical lifting of a 15 kg load from floor level), 5 with abdominal bracing and 5 without. Activity of the lumbar multifidus (LM) and internal oblique (IO) muscles, and trunk and lower body kinematics were obtained. During non-bracing lifting, IO activity did not increase beyond rested standing levels (with average muscle activity ranging between 8...
September 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28480978/lumbar-multifidus-muscle-degenerates-in-individuals-with-chronic-degenerative-lumbar-spine-pathology
#19
Bahar Shahidi, James C Hubbard, Michael C Gibbons, Severin Ruoss, Vinko Zlomislic, Richard Todd Allen, Steven R Garfin, Samuel R Ward
Histological and cell-level changes in the lumbar musculature in individuals with chronic lumbar spine degenerative conditions are not well characterized. Although prior literature supports evidence of changes in fiber type and size, little information exists describing the tissue quality and biology of pathological features of muscle in this population. The purpose of this study was to quantify multifidus tissue composition and structure, inflammation, vascularity, and degeneration in individuals with chronic degenerative lumbar spine pathology...
May 8, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28465030/twente-spine-model-a-complete-and-coherent-dataset-for-musculo-skeletal-modeling-of-the-thoracic-and-cervical-regions-of-the-human-spine
#20
Riza Bayoglu, Leo Geeraedts, Karlijn H J Groenen, Nico Verdonschot, Bart Koopman, Jasper Homminga
Musculo-skeletal modeling could play a key role in advancing our understanding of the healthy and pathological spine, but the credibility of such models are strictly dependent on the accuracy of the anatomical data incorporated. In this study, we present a complete and coherent musculo-skeletal dataset for the thoracic and cervical regions of the human spine, obtained through detailed dissection of an embalmed male cadaver. We divided the muscles into a number of muscle-tendon elements, digitized their attachments at the bones, and measured morphological muscle parameters...
April 20, 2017: Journal of Biomechanics
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