scholarly journals Determination of concentric and eccentric peak moment values for trunk flexion and extension in sedentary asymptomatic individuals by isokinetic dynamometry: a pilot study

Motricidade ◽  
2017 ◽  
Vol 13 (2) ◽  
pp. 49
Author(s):  
Rafaella Stradiotto Bernardelli ◽  
Auristela Duarte de Lima Moser ◽  
Gerson Linck Bichinho
Keyword(s):  
Trunk Muscles ◽  
Whole Body ◽  
Future Research ◽  
Critical Element ◽  
Trunk Flexion ◽  
Isokinetic Dynamometry ◽  
Postural Alignment ◽  
Flexion Extension ◽  
Asymptomatic Individuals ◽  
Flexion And Extension

The spine has a direct influence on postural alignment and movement of the whole body. Lumbar muscles constitute a critical element in trunk performance while weakness of these muscles has been associated with low back pain. Hence, strength profiling of trunk muscles is clinically significant. The objective of this research was to determine, by means of isokinetic dynamometry, peak moment (PM) values during isokinetic concentric and eccentric efforts of trunk flexion and extension in sedentary asymptomatic individuals. The sample consisted of 100 asymptomatic sedentary volunteers, fifty from each sex, aging 22.2 ± 3.3 years old. The sample underwent concentric and eccentric isokinetic assessment of the trunk flexor and extensor muscles at an angular velocity of 60 degrees/sec for each mode of contraction. The mean concentric PM for trunk flexion and extension were 139.5 and 166.6 Nm, respectively, while the respective values for the eccentric efforts were 188.8 and 221.2 Nm. The PM flexion/extension ratio was 0.87 and 0.89 for the concentric and eccentric efforts, respectively. These values of concentric and eccentric PM and PM ratio will serve as comparison parameters for future research, as well as for the assessment of symptomatic patients, and to help in the creation of the trunk muscle rebalance protocols.

Comparison of Lumbopelvic Coordination between Trunk Flexion and Extension

2016 ◽  
Vol 60 (1) ◽  
pp. 937-941
Author(s):  
Jie Zhou ◽  
Xiaopeng Ning
Keyword(s):  
Relative Phase ◽  
Sagittal Plane ◽  
Influential Factor ◽  
Coordination Pattern ◽  
Trunk Flexion ◽  
Flexion Extension ◽  
Continuous Relative Phase ◽  
Phase Variability ◽  
Coordination Patterns ◽  
Flexion And Extension

Lumbopelvic coordination describes the relative contributions of lumbar and pelvis to the total trunk flexion/extension motion, which has been identified as a major influential factor to spinal loading. The current study investigated the differences in lumbopelvic coordination between trunk flexion and extension. Thirteen subjects performed pace-controlled trunk flexion/extension motions in the sagittal plane while lumbopelvic continuous relative phase and phase variability were quantified. The results demonstrated that compared with trunk extension, lumbopelvic continuous relative phase and phase variability were 28% and 117% greater in trunk flexion motion, respectively, which indicated a more anti-phase and unstable coordination pattern. Quantifying these coordination patterns helps identifying abnormal patterns and serves as normative benchmarks during low back pain rehabilitation.

scholarly journals Trunk Range of Motion Is Related to Axial Rigidity, Functional Mobility and Quality of Life in Parkinson’s Disease: An Exploratory Study

Sensors ◽  
2020 ◽  
Vol 20 (9) ◽  
pp. 2482
Author(s):  
Roberto Cano-de-la-Cuerda ◽  
Lydia Vela-Desojo ◽  
Marcos Moreno-Verdú ◽  
María del Rosario Ferreira-Sánchez ◽  
Yolanda Macías-Macías ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Range Of Motion ◽  
Exploratory Study ◽  
Functional Mobility ◽  
Trunk Flexion ◽  
Flexion Extension ◽  
Flexion And Extension

Background: People with Parkinson’s disease (PD) present deficits of the active range of motion (ROM), prominently in their trunk. However, if these deficits are associated with axial rigidity, the functional mobility or health related quality of life (HRQoL), remains unknown. The aim of this paper is to study the relationship between axial ROM and axial rigidity, the functional mobility and HRQoL in patients with mild to moderate PD. Methods: An exploratory study was conducted. Non-probabilistic sampling of consecutive cases was used. Active trunk ROM was assessed by a universal goniometer. A Biodex System isokinetic dynamometer was used to measure the rigidity of the trunk. Functional mobility was determined by the Get Up and Go (GUG) test, and HRQoL was assessed with the PDQ-39 and EuroQol-5D questionnaires. Results: Thirty-six mild to moderate patients with PD were evaluated. Significant correlations were observed between trunk extensors rigidity and trunk flexion and extension ROM. Significant correlations were observed between trunk flexion, extension and rotation ROM and GUG. Moreover, significant correlations were observed between trunk ROM for flexion, extension and rotations (both sides) and PDQ-39 total score. However, these correlations were considered poor. Conclusions: Trunk ROM for flexion and extension movements, measured by a universal goniometer, were correlated with axial extensors rigidity, evaluated by a technological device at 30°/s and 45°/s, and functional mobility. Moreover, trunk ROM for trunk flexion, extension and rotations were correlated with HRQoL in patients with mild to moderate PD.

scholarly journals Sacroiliac joint motion in patients with degenerative lumbar spine disorders

2015 ◽  
Vol 23 (2) ◽  
pp. 209-216 ◽  
Author(s):  
Yukitaka Nagamoto ◽  
Motoki Iwasaki ◽  
Hironobu Sakaura ◽  
Tsuyoshi Sugiura ◽  
Takahito Fujimori ◽  
...  
Keyword(s):  
Lumbar Spine ◽  
Healthy Volunteers ◽  
Trunk Muscles ◽  
Joint Motion ◽  
Trunk Flexion ◽  
Cross Sectional ◽  
Flexion Extension ◽  
The Mean ◽  
Si Joint ◽  
Trunk Extension

OBJECT Usually additional anchors into the ilium are necessary in long fusion to the sacrum for degenerative lumbar spine disorders (DLSDs), especially for adult spine deformity. Although the use of anchors is becoming quite common, surgeons must always keep in mind that the sacroiliac (SI) joint is mobile and they should be aware of the kinematic properties of the SI joint in patients with DLSDs, including adult spinal deformity. No previous study has clarified in vivo kinematic changes in the SI joint with respect to patient age, sex, or parturition status or the presence of DLSDs. The authors conducted a study to clarify the mobility and kinematic characteristics of the SI joint in patients with DLSDs in comparison with healthy volunteers by using in vivo 3D motion analysis with voxel-based registration, a highly accurate, noninvasive method. METHODS Thirteen healthy volunteers (the control group) and 20 patients with DLSDs (the DLSD group) underwent low-dose 3D CT of the lumbar spine and pelvis in 3 positions (neutral, maximal trunk flexion, and maximal trunk extension). SI joint motion was calculated by computer processing of the CT images (voxel-based registration). 3D motion of the SI joint was expressed as both 6 df by Euler angles and translations on the coordinate system and a helical axis of rotation. The correlation between joint motion and the cross-sectional area of the trunk muscles was also investigated. RESULTS SI joint motion during trunk flexion-extension was minute in healthy volunteers. The mean rotation angles during trunk flexion were 0.07° around the x axis, −0.02° around the y axis, and 0.16° around the z axis. The mean rotation angles during trunk extension were 0.38° around the x axis, −0.08° around the y axis, and 0.08° around the z axis. During trunk flexion-extension, the largest amount of motion occurred around the x axis. In patients with DLSDs, the mean rotation angles during trunk flexion were 0.57° around the x axis, 0.01° around the y axis, and 0.19° around the z axis. The mean rotation angles during trunk extension were 0.68° around the x axis, −0.11° around the y axis, and 0.05° around the z axis. Joint motion in patients with DLSDs was significantly greater, with greater individual difference, than in healthy volunteers. Among patients with DLSDs, women had significantly more motion than men did during trunk extension. SI joint motion was significantly negatively correlated with the cross-sectional area of the trunk muscles during both flexion and extension of the trunk. CONCLUSIONS The authors elucidated the mobility and kinematic characteristics of the SI joint in patients with DLSDs compared with healthy volunteers for the first time. This information is useful for spine surgeons because of the recent increase in spinopelvic fusion for the treatment of DLSDs.

scholarly journals The trunk muscles behavior in women with low back pain in the test of flexion and extension of the trunk

2020 ◽  
pp. 1-6
Author(s):  
Guilherme Thomaz de Aquino Nava ◽  
Beatriz Mendes Tozim ◽  
Mary Hellen Morcelli ◽  
Marcelo Tavella Navega
Keyword(s):  
Low Back Pain ◽  
Motor Control ◽  
Back Pain ◽  
Trunk Muscles ◽  
Control Group ◽  
Low Back ◽  
Muscle Recruitment ◽  
Trunk Flexion ◽  
Intergroup Comparison ◽  
Flexion And Extension

INTRODUCTION: Chronic low back pain has a direct repercussion on the activities of daily living and the alteration of motor control is its main cause. This change leads to instability of the trunk stabilizer systems that control movements. Trunk flexion and extension movements associated with external disturbances may increase the potential for motor control error, resulting in injury and pain. OBJECTIVE: To evaluate and compare the recruitment of the trunk stabilizer muscles, with and without load, in the flexion and extension movements of the trunk. METHODS: Thirty - four sedentary women were evaluated, aged between 30 and 59 years, divided into: low back pain group (LBPG n = 19) and control group (CG n = 15). The protocol consisted of clinical evaluation, pain evaluation, strength test of extensor trunk muscles and trunk flexion and extension tests (TFET). Muscle electromyography in internal oblique (IO), lumbar multifidus (LM), rectus abdominis (RA), external oblique (EO) and lumbar iliacus (LI) were performed simultaneously. Multivariate analysis of variance was used with two-way repeated measurements. RESULTS: LBPG presented a trend of greater recruitment in all muscles and loads evaluated, with muscle activation up to 47% higher when compared to CG. In the intergroup comparison, the global muscles demonstrated a tendency for greater activation in LBPG, with values up to 53% higher when compared to CG, and predominantly high effect size d> 0.80. In the intragroup comparison, the IO, EO, LI and LM muscles of the LBPG presented ascending muscle recruitment with increased load the opposite was seen in the CG, which showed increased activation only in the LI and LM muscles. CONCLUSION: Women with low back pain need more muscle recruitment to remain stable and, in challenging situations, use inefficient strategies.

scholarly journals Evaluation of Strength and Irradiated Movement Pattern Resulting from Trunk Motions of the Proprioceptive Neuromuscular Facilitation

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Luciana Bahia Gontijo ◽  
Polianna Delfino Pereira ◽  
Camila Danielle Cunha Neves ◽  
Ana Paula Santos ◽  
Dionis de Castro Dutra Machado ◽  
...  
Keyword(s):  
Plantar Flexion ◽  
Movement Pattern ◽  
Lower Limbs ◽  
Trunk Flexion ◽  
Average Force ◽  
Proprioceptive Neuromuscular Facilitation ◽  
Muscular Activation ◽  
Flexion And Extension ◽  
Regional Muscle ◽  
Dorsal Flexion

Introduction. The proprioceptive neuromuscular facilitation (PNF) is a physiotherapeutic concept based on muscle and joint proprioceptive stimulation. Among its principles, the irradiation is the reaction of the distinct regional muscle contractions to the position of the application of the motions.Objective. To investigate the presence of irradiated dorsiflexion and plantar flexion and the existing strength generated by them during application of PNF trunk motions.Methods. The study was conducted with 30 sedentary and female volunteers, the PNF motions of trunk flexion, and extension with the foot (right and left) positioned in a developed equipment coupled to the load cell, which measured the strength irradiated in Newton.Results. Most of the volunteers irradiated dorsal flexion in the performance of the flexion and plantar flexion during the extension motion, both presenting an average force of 8.942 N and 10.193 N, respectively.Conclusion. The distal irradiation in lower limbs became evident, reinforcing the therapeutic actions to the PNF indirect muscular activation.

Peak Torque Prediction Using Handgrip and Strength Predictors in Men and Women With Motor Complete Spinal Cord Injury

2021 ◽  
Vol 27 (3) ◽  
pp. 49-59
Author(s):  
Frederico Ribeiro Neto ◽  
Jefferson Rodrigues Dorneles ◽  
João Henrique Carneiro Leão Veloso ◽  
Carlos Wellington Gonçalves ◽  
Rodrigo Rodrigues Gomes Costa
Keyword(s):  
Handgrip Strength ◽  
Peak Torque ◽  
Shoulder Abduction ◽  
Trunk Flexion ◽  
Predictive Equations ◽  
Men And Women ◽  
Flexion Extension ◽  
Cord Injury ◽  
Complete Spinal Cord Injury ◽  
Hand Dynamometry

Objectives: To establish predictive equations for peak torque of muscle groups with totally and partially preserved innervation in individuals with motor complete spinal cord injury (SCI), based on hand dynamometry and strength predictor variables. Methods: The cross-sectional study conducted at a rehabilitation hospital consecutively recruited 108 men and women with SCI. All participants performed maximum peak torque tests for shoulder abduction/adduction (isokinetic), trunk flexion/extension (isometric), and handgrip strength testing (hand dynamometer) to establish predictive peak torque equations. The primary outcomes were peak torque variables. Handgrip strength, age, injury level, time since injury, age at injury, body mass, height, body mass index, and physical activity level were the secondary outcomes used as strength predictor variables. Results: Handgrip strength was a predictor variable for shoulder abduction/adduction peak torque. The best predictive models for shoulder abduction/adduction peak torque exhibited R2 = 0.57 and R2 = 0.60, respectively (p ≤ .05). Injury level showed the highest significant predictive capacity for trunk flexion/extension peak torque models (R2 = 0.38 and R2 = 0.29; p ≤ .05). Conclusion: Shoulder abduction/adduction peak torque predictive equations may be an alternative for use in an accessible strength tool (hand dynamometry) to evaluate training and rehabilitation programs. Trunk flexion/extension peak torque equations exhibited moderate correlations and high standard error of the estimates and should be used with caution.

Contrasting supply chain traceability and supply chain visibility: are they interchangeable?

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Vivek Roy
Keyword(s):  
Supply Chain ◽  
Supply Chain Management ◽  
Information Sharing ◽  
Design Methodology ◽  
Relevant Literature ◽  
Future Research ◽  
Critical Element ◽  
Effective Management ◽  
Chain Management ◽  
Content Type

PurposeSupply chain traceability and supply chain visibility have become a critical element for the effective management of contemporary complex supply chains. At their core is information sharing, which has been acknowledged as a key prerequisite for logistics and supply chain performance, but whose notional underpinnings have not been delineated fully, leading to interchangeable deployment of these terms. Addressing the shortcoming, this paper aims to establish a contrast between the two notions.Design/methodology/approachDrawing from systematic review protocols, a multi-disciplinary review scope is constructed wherein the synthesis is strategized to primarily channel implications for the scholarship of logistics and supply chain management. The review is aimed at addressing two research objectives: (1) how the notions of traceability and visibility in supply chain management develop contrast in terms of their thematic emphasis and (2) to attain an integrative understanding of the notional convergence and divergence between supply chain traceability and visibility for raising strategic recommendations.FindingsThe review outcomes help contrast both the convergence and the divergence between traceability and visibility in the supply chain environment, and the differentiated but fundamental role that information sharing plays within these notions to outline why they are not interchangeable.Originality/valueThe originality of the findings lies in the conceptual synthesis of the relevant literature from both technological and non-technological perspectives to ultimately draw logistics and supply chain management implications. The review also points out key strategic considerations to demarcate the notional boundaries of traceability and visibility in future research.

scholarly journals EFFECTS OF THE SCHROTH METHOD FOR TRUNK MUSCLES’ STATIC ENDURANCE AND SPINE MOBILITY IN GIRLS WITH IDIOPATHIC SCOLIOSIS

2017 ◽  
Vol 27 (5) ◽  
pp. 71-75
Author(s):  
Vaiva Strukčinskaitė ◽  
Juozas Raistenskis ◽  
Aurelija Šidlauskienė ◽  
Birutė Strukčinskienė ◽  
Sigitas Griškonis
Keyword(s):  
Idiopathic Scoliosis ◽  
Treatment Method ◽  
University Hospital ◽  
Trunk Muscles ◽  
Control Group ◽  
Abdominal Muscles ◽  
Study Group ◽  
Trunk Flexion ◽  
Rehabilitation Centre ◽  
Spine Mobility

The prevalence of scoliosis in the paediatric population is increasing every year. The treatment of idiopathic scoliosis in Lithuania is based on traditional physical therapy, and it is not always the most effective. Schroth method recently is widely globally used evidence-based conservative scoliosis treatment method. The aim of the study was to assess the effects of the Schroth method treatment for trunk muscles’ static endurance and spine mobility in girls with idiopathic scoliosis. The study was conducted in 2016-2017 at the Physical Medicine and Rehabilitation Centre, Children’s Hospital, Affiliate of Vilnius University Hospital Santaros Klinikos. In the study participated 50 girls aged 9-17 years with idiopathic scoliosis. The patients were divided into two groups: the study group (n = 25) and the control group (n = 25). Schroth treatment method for the study group and a traditional physiotherapy for the control group were used. For patients were applied 10 procedures of physiotherapy (for 30 minutes, 5 times a week). The study showed that trunk muscles’ static endurance results after rehabilitation were significantly higher in the study group than in the control group (p<0.05). The analysis of the average changes in the results between the groups revealed that in the study group the results of abdominal muscles (16.08 s more), left side trunk muscles (6.98 s more), and right side trunk muscles (7.84 s more) had changed significantly. Results of spine mobility significantly improved in both groups after rehabilitation (p<0.05). Trunk flexion amplitude estimated to have significantly greater improvement in the study group. The treatment using Schroth method had significantly improved the indicators of trunk muscles’ static endurance and mobility of the spine during spinal flexion. When compare the results inside the groups, the significant change was shown in the majority of spine and posture-related parameters in the study group. Special physiotherapy, especially Schroth method for children with idiopathic scoliosis have been shown to be an effective conservative treatment for scoliosis.

scholarly journals Biomechanical evaluation of the ProDisc-C stability following graded posterior cervical injury

2018 ◽  
Vol 29 (5) ◽  
pp. 515-524
Author(s):  
Michael D. Staudt ◽  
Doron Rabin ◽  
Ali A. Baaj ◽  
Neil R. Crawford ◽  
Neil Duggal
Keyword(s):  
Axial Rotation ◽  
Control Group ◽  
Lateral Bending ◽  
Cervical Injury ◽  
Cervical Arthroplasty ◽  
Posterior Surgery ◽  
Flexion Extension ◽  
Posterior Element ◽  
And Control ◽  
Flexion And Extension

OBJECTIVEThere are limited data regarding the implications of revision posterior surgery in the setting of previous cervical arthroplasty (CA). The purpose of this study was to analyze segmental biomechanics in human cadaveric specimens with and without CA, in the context of graded posterior resection.METHODSFourteen human cadaveric cervical spines (C3–T1 or C2–7) were divided into arthroplasty (ProDisc-C, n = 7) and control (intact disc, n = 7) groups. Both groups underwent sequential posterior element resections: unilateral foraminotomy, laminoplasty, and finally laminectomy. Specimens were studied sequentially in two different loading apparatuses during the induction of flexion-extension, lateral bending, and axial rotation.RESULTSRange of motion (ROM) after artificial disc insertion was reduced relative to that in the control group during axial rotation and lateral bending (13% and 28%, respectively; p < 0.05) but was similar during flexion and extension. With sequential resections, ROM increased by a similar magnitude following foraminotomy and laminoplasty in both groups. Laminectomy had a much greater effect: mean (aggregate) ROM during flexion-extension, lateral bending, and axial rotation was increased by a magnitude of 52% following laminectomy in the setting of CA, compared to an 8% increase without arthroplasty. In particular, laminectomy in the setting of CA introduced significant instability in flexion-extension, characterized by a 90% increase in ROM from laminoplasty to laminectomy, compared to a 16% increase in ROM from laminoplasty to laminectomy without arthroplasty (p < 0.05).CONCLUSIONSForaminotomy and laminoplasty did not result in significant instability in the setting of CA, compared to controls. Laminectomy alone, however, resulted in a significant change in biomechanics, allowing for significantly increased flexion and extension. Laminectomy alone should be used with caution in the setting of previous CA.

scholarly journals Histomorphologic Analysis of the Late-term Rat Fetus and Placenta

2018 ◽  
Vol 46 (2) ◽  
pp. 158-168 ◽  
Author(s):  
Phanie L. Charest ◽  
Vanessa Vrolyk ◽  
Pauline Herst ◽  
Maryse Lessard ◽  
Deborah M. Sloboda ◽  
...  
Keyword(s):  
Cutting Planes ◽  
Whole Body ◽  
Future Research ◽  
Serial Sectioning ◽  
Sprague Dawley ◽  
Rat Fetus ◽  
Rat Fetuses ◽  
Toxicological Studies ◽  
Hematoxylin Eosin ◽  
Gross Examination

Histological examination of the rat placenta and fetus is uncommon. Toxicological studies mainly rely on gross examination of the fetus and on fetal and placental weights. These are often insufficient to assess the fetal and placental toxicity of xenobiotics. The small size of the fetus makes its dissection labor-intensive. Thus, our objective was to develop a simple and accurate technique to evaluate the rat fetus and placenta. Sprague-Dawley rat fetuses at gestational day 19.5 ( n = 18) and their placentas ( n = 32) were fixed in formalin. Placentas were cut transversally in the center. Fetuses were cut following a freehand whole-body serial sectioning diagram adapted from Wilson’s method. Sections were stained with hematoxylin–eosin–phloxine–saffron, and histomorphometry was used to measure the area of the fetal placental region (27.2 ± 1.7 mm2), including the labyrinth (22.2 ± 1.0 mm2) and the basal zone (4.8 ± 0.8 mm2). Our whole-fetus serial sectioning technique resulted in 12 precise cutting planes that fit on 3 histological slides, enabling the examination of most organs without labor-intensive dissection. Quantitative analysis of placental areas improves the understanding of the pathogenesis of treatment-related changes. This technique provides a standardized method for future research in pertinent fields such as developmental biology and toxicology.

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