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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
https://www.readbyqxmd.com/read/28463899/acute-metabolic-response-energy-expenditure-and-emg-activity-in-sitting-and-standing
#16
Ying Gao, Mika Silvennoinen, Arto Pesola, Heikki Kainulainen, Neil J Cronin, Taija Finni
PURPOSE: While merely standing up interrupts sedentary behavior, it is important to study acute metabolic responses during single bouts of sitting and standing to understand the physiological processes affecting the health of office workers. METHODS: 18 healthy middle aged women aged 49.4 ± 7.9 years (range: 40 to 64) with a BMI of 23.4 ± 2.8 kg·m volunteered for this laboratory-based randomized crossover trial where they performed two hours desk work either in sitting or standing postures after overnight fasting...
May 2, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28459281/self-managed-exercises-strength-and-fitness-training-and-multifidus-muscle-size-in-elite-footballers
#17
Julie A Hides, Jazmin Walsh, Melinda M Franettovich Smith, M Dilani Mendis
CONTEXT:   Low back pain (LBP) and lower limb injuries are common among Australian Football League (AFL) players. Smaller size of 1 key trunk muscle, the lumbar multifidus (MF), has been associated with LBP and injuries in footballers. The size of the MF muscle has been shown to be modifiable with supervised motor-control training programs. Among AFL players, supervised motor-control training has also been shown to reduce the incidence of lower limb injuries and was associated with increased player availability for games...
May 1, 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28456669/lumbar-muscle-structure-and-function-in-chronic-versus-recurrent-low-back-pain-a-cross-sectional-study
#18
Dorien Goubert, Robby De Pauw, Mira Meeus, Tine Willems, Barbara Cagnie, Stijn Schouppe, Jessica Van Oosterwijck, Evy Dhondt, Lieven Danneels
BACKGROUND CONTEXT: Heterogeneity exists within the low back pain (LBP) population. Some patients recover after every pain episode, whereas others suffer daily from LBP complaints. Until now, studies rarely make a distinction between recurrent low back pain (RLBP) and chronic low back pain (CLBP), although both are characterized by a different clinical picture. Clinical experiences also indicate that heterogeneity exists within the CLBP population. Muscle degeneration, like atrophy, fat infiltration, alterations in muscle fiber type, and altered muscle activity, compromises proper biomechanics and motion of the spinal units in LBP patients...
April 26, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28427393/correlation-between-intervertebral-disc-degeneration-paraspinal-muscle-atrophy-and-lumbar-facet-joints-degeneration-in-patients-with-lumbar-disc-herniation
#19
Dong Sun, Peng Liu, Jie Cheng, Zikun Ma, Jingpei Liu, Tingzheng Qin
BACKGROUND: To assess the correlation between lumbar disc degeneration (LDD), multifidus muscle atrophy (LMA), and facet joints degeneration in patients with L4-L5 lumbar disc herniation (LDH). METHODS: Sixty patients with L4-L5 LDH diagnosed by a 1.5 T MRI scanner were enrolled in the study group and another 60 patients with non-specific back pain were enrolled in the control group. LDD, LMA, and facet joints degeneration were examined and analyzed independently by two independent orthopedic surgeons using T2-weighted images...
April 20, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28420353/the-influence-of-fatigue-and-chronic-low-back-pain-on-muscle-recruitment-patterns-following-an-unexpected-external-perturbation
#20
Júlia Jubany, Lieven Danneels, Rosa Angulo-Barroso
BACKGROUND: Chronic low back pain (CLBP) has been associated with altered trunk muscle responses as well as increased muscle fatigability. CLBP patients and fatigued healthy subjects could experience similar neuromuscular strategies to attempt to protect the spine. The current study examined muscle activation differences between healthy and CLBP subjects following a perturbation. In addition, the possible role of muscle fatigue was evaluated by investigating the healthy control subjects in a non-fatigued and a fatigued condition...
April 19, 2017: BMC Musculoskeletal Disorders
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