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Lower limb kinematics

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https://www.readbyqxmd.com/read/28719477/gait-analysis-on-force-treadmill-in-children-comparison-with-results-from-ground-based-force-platforms
#1
Luigi Tesio, Chiara Malloggi, Nicola M Portinaro, Luigi Catino, Nicola Lovecchio, Viviana Rota
Gait analysis (GA) typically includes surface electromyographic (sEMG) recording from several lower limb muscles, optoelectronic measurement of joint rotations, and force recordings from ground-based platforms. From the latter two variables, the muscle power acting on the lower limb joints can be estimated. Recently, gait analysis on a split-belt force treadmill (GAFT) was validated for the study of adult walking. It showed high reliability of spatiotemporal, kinematic, dynamic, and sEMG parameters, matching those obtainable with GA on the basis of ground walking...
July 17, 2017: International Journal of Rehabilitation Research. Revue Internationale de Recherches de Réadaptation
https://www.readbyqxmd.com/read/28716590/lumbar-muscle-inflammation-alters-spinally-mediated-locomotor-recovery-induced-by-training-in-a-mouse-model-of-complete-spinal-cord-injury
#2
Renaud Jeffrey-Gauthier, Mathieu Piché, Hugues Leblond
Locomotor networks after spinal cord injury (SCI) are shaped by training-activated proprioceptive and cutaneous inputs. Nociception from injured tissues may alter these changes but has largely been overlooked. The objective of the present study was to ascertain whether lumbar muscle inflammation hinders locomotion recovery in a mouse model of complete SCI. Lower limb kinematics during treadmill training was assessed before and after complete SCI at T8 (2, 7, 14, 21 and 28 days post-injury). Locomotor recovery was compared in 4 groups of CD1 mice: control spinal mice; spinal mice with daily locomotor training; spinal mice with lumbar muscle inflammation (Complete Freund's Adjuvant (CFA) injection); and spinal mice with locomotor training and CFA...
July 14, 2017: Neuroscience
https://www.readbyqxmd.com/read/28714764/abdominal-hollowing-reduces-lateral-trunk-displacement-during-single-leg-squats-in-healthy-females-but-does-not-affect-peak-hip-abduction-angle-or-knee-abductio-angle-moment
#3
Lukas D Linde, Jessica Archibald, Eve C Lampert, John Z Srbely
CONTEXT: Females suffer 4-6 times more non-contact anterior cruciate ligament (ACL) injuries than males due to neuromuscular control deficits of the hip musculature leading to increases in hip adduction angle, knee abduction angle, and knee abduction moment during dynamic tasks such as single-leg squats. Lateral trunk displacement has been further related to ACL injury risk in females, leading to the incorporation of core strength/stability exercises in ACL preventative training programs...
July 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28713810/a-biomechanical-comparison-of-proportional-electromyography-control-to-biological-torque-control-using-a-powered-hip-exoskeleton
#4
Aaron J Young, Hannah Gannon, Daniel P Ferris
BACKGROUND: Despite a large increase in robotic exoskeleton research, there are few studies that have examined human performance with different control strategies on the same exoskeleton device. Direct comparison studies are needed to determine how users respond to different types of control. The purpose of this study was to compare user performance using a robotic hip exoskeleton with two different controllers: a controller that targeted a biological hip torque profile and a proportional myoelectric controller...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/28713536/neuromuscular-taping-application-in-counter-movement-jump-biomechanical-insight-in-a-group-of-healthy-basketball-players
#5
Giuseppe Marcolin, Alessandro Buriani, Andrea Giacomelli, David Blow, Davide Grigoletto, Marco Gesi
Kinesiologic elastic tape is widely used for both clinical and sport applications although its efficacy in enhancing agonistic performance is still controversial. Aim of the study was to verify in a group of healthy basketball players whether a neuromuscular taping application (NMT) on ankle and knee joints could affect the kinematic and the kinetic parameters of the jump, either by enhancing or inhibiting the functional performance. Fourteen healthy male basketball players without any ongoing pathologies at upper limbs, lower limbs and trunk volunteered in the study...
June 24, 2017: European Journal of Translational Myology
https://www.readbyqxmd.com/read/28713455/a-pilot-study-of-the-effect-of-outsole-hardness-on-lower-limb-kinematics-and-kinetics-during-soccer-related-movements
#6
Dong Sun, Qichang Mei, Julien S Baker, Xuewen Jia, Yaodong Gu
The purpose of this study was to investigate the effect of different outsole hardness of turf cleats shoes on the lower limb kinematics and kinetics of soccer players playing on artificial turf. The participants were required to complete tasks of straight running and 45° left sidestep cutting movements, respectively, at the speed of 4.5 ± 0.2 m/s on artificial turf. They were asked to randomly select turf cleats shoes with a soft outsole (SO), medium hardness outsole (MO) and hard outsole (HO). During the stance phase of straight running, peak pressure and force-time integral in medial forefoot (MFF) of players wearing cleats shoes with MO were significantly higher than those wearing cleats shoes with SO...
June 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28712544/the-effect-of-leg-dominance-and-landing-height-on-acl-loading-among-female-athletes
#7
Hossein Mokhtarzadeh, Katie Ewing, Ina Janssen, Chen-Hua Yeow, Nicholas Brown, Peter Vee Sin Lee
Female athletes are more prone to anterior cruciate ligament (ACL) injury. A neuromuscular imbalance called leg dominance may provide a biomechanical explanation. Therefore, the purpose of this study was to compare the side-to-side lower limb differences in movement patterns, muscle forces and ACL forces during a single-leg drop-landing task from two different heights. We hypothesized that there will be significant differences in lower limb movement patterns (kinematics), muscle forces and ACL loading between the dominant and non-dominant limbs...
July 5, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28709418/single-leg-squat-performance-in-physically-and-non-physically-active-individuals-a-cross-sectional-study
#8
Silvia Gianola, Greta Castellini, Elena Stucovitz, Alice Nardo, Giuseppe Banfi
BACKGROUND: Single-leg squat (SLS) is a functional test visually rated by clinicians for assessing lower limb function as a preventive injury strategy. SLS clinical rating is a qualitative evaluation and it does not count objective outcomes as kinematics data and surface electromyography (sEMG) assessment. Based on the SLS rating, the aims of this study were (i) to determine the clinical rating agreement among six raters and (ii) to assess kinematic and sEMG predictors of good SLS performance in physically and non-physically active individuals...
July 14, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28704344/effects-of-altering-trunk-position-during-landings-on-patellar-tendon-force-and-pain
#9
Rodrigo Scattone Silva, Craig R Purdam, Angela M Fearon, Wayne A Spratford, Claire Kenneally-Dabrowski, Peter Preston, Fábio V Serrão, James E Gaida
PURPOSE: To verify the immediate effects of altering sagittal plane trunk position during jump-landings on lower limb biomechanics, patellar tendon force and pain of athletes with and without patellar tendinopathy. METHODS: Twenty-one elite male athletes were categorized into 3 groups, athletes with patellar tendinopathy (TG, n=7), asymptomatic athletes with patellar tendon abnormalities (AG, n=7) and asymptomatic athletes without tendon abnormalities (CG, n=7)...
July 12, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28702442/kinematics-and-neuromuscular-recruitment-during-vertical-treadmill-exercise
#10
Alastair R Jordan, Andrew Barnes, David Claxton, Alison Purvis, Mary Fysh
The vertical treadmill (VertiRun) is an unresearched, partial weight-bearing exercise mode for lower limb rehabilitation. The user undertakes a "running-like" action whilst body weight is supported by a bench and the limb is drawn downwards against overhanging resistance cables on a vertically hung nonmotorised treadmill. This study sought to describe the kinematics and neuromuscular recruitment during VertiRun exercise in the supine, 40°, and 70° postures. Twenty-one healthy male participants (age, 25±7 years; stature, 1...
June 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28701547/ageing-does-not-affect-the-intralimb-coordination-elicited-by-slip-like-perturbation-of-different-intensities
#11
Federica Aprigliano, Dario Martelli, Peppino Tropea, Guido Pasquini, Silvestro Micera, Vito Monaco
This study was aimed at verifying whether ageing modifies intralimb coordination strategy during corrective responses elicited by unexpected slip-like perturbations delivered during steady walking on a treadmill. To this end, ten young and ten elderly subjects were asked to manage unexpected slippages of different intensities. We analyzed the planar covariation law of the lower limb segments, using the principal component analysis, in order to verify whether elevation angles of older subjects covaried along a plane, before and after the perturbation...
July 12, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/28693378/effects-of-load-carriage-and-work-boots-on-lower-limb-kinematics-of-industrial-workers
#12
Miao Tian, Huiju Park, Jun Li, Heekwang Koo, Qinwen Xu
Load and footwear condition are two crucial elements varying the kinematic responses during walking, which probably lead to chronic injury. Fifteen healthy male individual with no obvious gait abnormalities participated in this study. Apart from a no-load condition, four external load conditions with two load levels were investigated. Work boots were compared with running shoes to determine footwear effects. Significant impacts were found for lower limb range of motion at certain joints when carrying loads...
July 11, 2017: International Journal of Occupational Safety and Ergonomics: JOSE
https://www.readbyqxmd.com/read/28687149/stiffness-of-a-wobbling-mass-models-analysed-by-a-smooth-orthogonal-decomposition-of-the-skin-movement-relative-to-the-underlying-bone
#13
Raphaël Dumas, Eric Jacquelin
The so-called soft tissue artefacts and wobbling masses have both been widely studied in biomechanics, however most of the time separately, from either a kinematics or a dynamics point of view. As such, the estimation of the stiffness of the springs connecting the wobbling masses to the rigid-body model of the lower limb, based on the in vivo displacements of the skin relative to the underling bone, has not been performed yet. For this estimation, the displacements of the skin markers in the bone-embedded coordinate systems are viewed as a proxy for the wobbling mass movement...
June 21, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28683419/deviating-running-kinematics-and-hamstring-injury-susceptibility-in-male-soccer-players-cause-or-consequence
#14
Joke Schuermans, Damien Van Tiggelen, Tanneke Palmans, Lieven Danneels, Erik Witvrouw
BACKGROUND: Although the vast majority of hamstring injuries in male soccer are sustained during high speed running, the association between sprinting kinematics and hamstring injury vulnerability has never been investigated prospectively in a cohort at risk. PURPOSE: This study aimed to objectify the importance of lower limb and trunk kinematics during full sprint in hamstring injury susceptibility. STUDY DESIGN: Cohort study; level of evidence, 2...
June 27, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28683417/gait-deficiencies-associated-with-peripheral-artery-disease-are-different-than-chronic-obstructive-pulmonary-disease
#15
John D McCamley, Eric J Pisciotta, Jennifer M Yentes, Shane R Wurdeman, Stephen I Rennard, Iraklis I Pipinos, Jason M Johanning, Sara A Myers
OBJECTIVE: Previous studies have indicated that patients with peripheral artery disease (PAD), display significant differences in their kinetic and kinematic gait characteristics when compared to healthy, aged-matched controls. The ability of patients with chronic obstructive pulmonary disease (COPD) to ambulate is also limited. These limitations are likely due to pathology-driven muscle morphology and physiology alterations establish in PAD and COP, respectively. Gait changes in PAD were compared to gait changes due to COPD to further understand how altered limb muscle due to disease can alter walking patterns...
June 27, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28677074/the-measurement-of-medial-knee-gap-width-using-ultrasound
#16
Laura C Slane, Josh A Slane, Lennart Scheys
INTRODUCTION: Medial knee instability is a key clinical parameter for assessing ligament injury and arthroplasty success, but current methods for measuring stability are typically either qualitative or involve ionizing radiation. The purpose of this study was to perform a preliminary analysis of whether ultrasound (US) could be used as an alternate approach for quantifying medial instability by comparing an US method with an approach mimicking the current gold standard fluoroscopy method...
August 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28676752/an-adaptive-neuromuscular-controller-for-assistive-lower-limb-exoskeletons-a-preliminary-study-on-subjects-with-spinal-cord-injury
#17
Amy R Wu, Florin Dzeladini, Tycho J H Brug, Federica Tamburella, Nevio L Tagliamonte, Edwin H F van Asseldonk, Herman van der Kooij, Auke J Ijspeert
Versatility is important for a wearable exoskeleton controller to be responsive to both the user and the environment. These characteristics are especially important for subjects with spinal cord injury (SCI), where active recruitment of their own neuromuscular system could promote motor recovery. Here we demonstrate the capability of a novel, biologically-inspired neuromuscular controller (NMC) which uses dynamical models of lower limb muscles to assist the gait of SCI subjects. Advantages of this controller include robustness, modularity, and adaptability...
2017: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/28676750/multi-trial-gait-adaptation-of-healthy-individuals-during-visual-kinematic-perturbations
#18
Trieu Phat Luu, Yongtian He, Sho Nakagome, Kevin Nathan, Samuel Brown, Jeffrey Gorges, Jose L Contreras-Vidal
Optimizing rehabilitation strategies requires understanding the effects of contextual cues on adaptation learning. Prior studies have examined these effects on the specificity of split-belt walking adaptation, showing that contextual visual cues can be manipulated to modulate the magnitude, transfer, and washout of split-belt-induced learning in humans. Specifically, manipulating the availability of vision during training or testing phases of learning resulted in differences in adaptive mechanisms for temporal and spatial features of walking...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28672004/stroller-running-energetic-and-kinematic-changes-across-pushing-methods
#19
Ryan S Alcantara, Cara M Wall-Scheffler
OBJECTIVE: Running with a stroller provides an opportunity for parents to exercise near their child and counteract health declines experienced during early parenthood. Understanding biomechanical and physiological changes that occur when stroller running is needed to evaluate its health impact, yet the effects of stroller running have not been clearly presented. Here, three commonly used stroller pushing methods were investigated to detect potential changes in energetic cost and lower-limb kinematics...
2017: PloS One
https://www.readbyqxmd.com/read/28671953/clinical-assessment-and-three-dimensional-movement-analysis-an-integrated-approach-for-upper-limb-evaluation-in-children-with-unilateral-cerebral-palsy
#20
Lisa Mailleux, Ellen Jaspers, Els Ortibus, Cristina Simon-Martinez, Kaat Desloovere, Guy Molenaers, Katrijn Klingels, Hilde Feys
INTRODUCTION: The clinical application of upper limb (UL) three-dimensional movement analysis (3DMA) in children with unilateral cerebral palsy (uCP) remains challenging, despite its benefits compared to conventional clinical scales. Moreover, knowledge on UL movement pathology and how this relates to clinical parameters remains scarce. Therefore, we investigated UL kinematics across different manual ability classification system (MACS) levels and explored the relation between clinical and kinematic parameters in children with uCP...
2017: PloS One
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