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shoulder kinematics

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https://www.readbyqxmd.com/read/28327058/extending-energy-optimization-in-goal-directed-aiming-from-movement-kinematics-to-joint-angles
#1
James J Burkitt, Raoul M Bongers, Digby Elliott, Steve Hansen, James L Lyons
Energy optimization in goal-directed aiming has been demonstrated as an undershoot bias in primary movement endpoint locations, especially in conditions where corrections to target overshoots must be made against gravity. Two-component models of upper limb movement have not yet considered how joint angles are organized to deal with the energy constraints associated with moving the upper limb in goal-directed aiming tasks. To address this limitation, participants performed aiming movements to targets in the up and down directions with the index finger and two types of rod extensions attached to the index finger...
March 2017: Journal of Motor Behavior
https://www.readbyqxmd.com/read/28323218/the-postural-control-can-be-optimized-by-the-first-movement-initiation-condition-encountered-when-submitted-to-muscle-fatigue
#2
Florian Monjo, Nicolas Forestier
We investigated whether and how the movement initiation condition (IC) encountered during the early movements performed following focal muscle fatigue affects the postural control of discrete ballistic movements. For this purpose, subjects performed shoulder flexions in a standing posture at maximal velocity under two movement IC, i.e., in self-paced conditions and submitted to a Stroop-like task in which participants had to trigger fast shoulder flexions at the presentation of incongruent colors. Shoulder flexion kinematics, surface muscle activity of focal and postural muscles as well as center-of-pressure kinematics were recorded...
March 18, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28322758/increased-seat-dump-angle-in-a-manual-wheelchair-is-associated-with-changes-in-thoracolumbar-lordosis-and-scapular-kinematics-during-propulsion
#3
Beth A Cloud, Kristin D Zhao, Arin M Ellingson, Ahmad Nassr, Anthony J Windebank, Kai-Nan An
OBJECTIVE: To quantify and compare spinal curvature and shoulder kinematics throughout the manual wheelchair propulsion cycle for individuals with spinal cord injury (SCI) who were seated at 2 different seat dump angles. DESIGN: Single-group, repeated-measures study. SETTING: Academic medical center. PARTICIPANTS: Twenty-eight individuals completed the telephone screening; 21 were eligible and completed the study. INTERVENTIONS: Participants' personal manual wheelchairs were modified to have seat dump angles of 0° or 14°, with a vertical backrest...
March 18, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28319141/heightened-clinical-utility-of-smartphone-versus-body-worn-inertial-system-for-shoulder-function-b-b-score
#4
Claude Pichonnaz, Kamiar Aminian, Céline Ancey, Hervé Jaccard, Estelle Lécureux, Cyntia Duc, Alain Farron, Brigitte M Jolles, Nigel Gleeson
BACKGROUND: The B-B Score is a straightforward kinematic shoulder function score including only two movements (hand to the Back + lift hand as to change a Bulb) that demonstrated sound measurement properties for patients for various shoulder pathologies. However, the B-B Score results using a smartphone or a reference system have not yet been compared. Provided that the measurement properties are comparable, the use of a smartphone would offer substantial practical advantages. This study investigated the concurrent validity of a smartphone and a reference inertial system for the measurement of the kinematic shoulder function B-B Score...
2017: PloS One
https://www.readbyqxmd.com/read/28284228/interactive-wearable-systems-for-upper-body-rehabilitation-a-systematic-review
#5
REVIEW
Qi Wang, Panos Markopoulos, Bin Yu, Wei Chen, Annick Timmermans
BACKGROUND: The development of interactive rehabilitation technologies which rely on wearable-sensing for upper body rehabilitation is attracting increasing research interest. This paper reviews related research with the aim: 1) To inventory and classify interactive wearable systems for movement and posture monitoring during upper body rehabilitation, regarding the sensing technology, system measurements and feedback conditions; 2) To gauge the wearability of the wearable systems; 3) To inventory the availability of clinical evidence supporting the effectiveness of related technologies...
March 11, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28279851/the-sensitivity-of-shoulder-muscle-and-joint-force-predictions-to-changes-in-joint-kinematics-a-monte-carlo-analysis
#6
Wen Wu, Peter Vee Sin Lee, David C Ackland
Kinematics of the shoulder girdle obtained from non-invasive measurement systems such as video motion analysis, accelerometers and magnetic tracking sensors has been shown to be adversely affected by instrumentation measurement errors and skin motion artefact. The degree to which musculoskeletal model calculations of shoulder muscle and joint loading are influenced by variations in joint kinematics is currently not well understood. A three-dimensional musculoskeletal model of the upper limb was used to evaluate the sensitivity of shoulder muscle and joint force...
March 1, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28269659/evaluation-of-shoulder-joint-kinematics-and-muscle-activity-during-geared-and-standard-manual-wheelchair-mobility
#7
Omid Jahanian, Alyssa J Schnorenberg, Brooke A Slavens
Manual wheelchairs often lead to reduced independent function and an increase in shoulder pain and injuries. Geared manual wheelchairs may be a promising alternative that reduces the biomechanical demands of the shoulder needed for tasks such as propulsion on ramps and carpeted floors, while maximizing function and participation. To investigate the effects of geared manual wheelchair mobility during demanding tasks such as ramp ascent, six able-bodied subjects were evaluated in this study. Subjects were asked to propel both standard and geared manual wheelchairs on a tiled level floor and on a wheelchair ADA ramp...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269625/development-and-validation-of-thums-version-5-with-1d-muscle-models-for-active-and-passive-automotive-safety-research
#8
Hideyuki Kimpara, Yuko Nakahira, Masami Iwamoto
Accurately predicting the occupant kinematics is critical to better understand the injury mechanisms during an automotive crash event. The objectives of this study were to develop and validate a finite element (FE) model of the human body integrated with an active muscle model called Total HUman Model for Safety (THUMS) version 5, which has the body size of the 50th percentile American adult male (AM50). This model is characterized by being able to generate a force owing to muscle tone and to predict the occupant response during an automotive crash event...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28265688/from-reaching-to-reach-to-grasp-the-arm-posture-difference-and-its-implications-on-human-motion-control-strategy
#9
Zhi Li, Dejan Milutinović, Jacob Rosen
Reach-to-grasp arm postures differ from those in pure reaching because they are affected by grasp position/orientation, rather than simple transport to a position during a reaching motion. This paper investigates this difference via an analysis of experimental  data collected on reaching and reach-to-grasp motions. A seven-degree-of-freedom (DOFs) kinematic arm model with the swivel angle is used for the motion analysis. Compared to a widely used anatomical arm model, this model distinguishes clearly the four grasping-relevant DOFs (GR-DOFs) that are affected by positions and orientations of the objects to be grasped...
March 6, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28259517/short-term-effects-of-thoracic-spine-manipulation-on-shoulder-impingement-syndrome-a-randomized-controlled-trial
#10
Melina N Haik, Francisco Alburquerque-Sendín, Paula R Camargo
OBJECTIVE: To investigate the short-term effects of thoracic spine manipulation (TSM) on pain, function, scapular kinematics and scapular muscle activity in individuals with shoulder impingement syndrome (SIS). DESIGN: Blinded assessor and patient, randomized controlled trial. SETTING: Laboratory. PARTICIPANTS: Sixty-one patients with SIS. INTERVENTION: Participants were randomly allocated to TSM (n=30) or sham-TSM group (n=31) and attended 2 intervention sessions over a 1-week period...
March 1, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28250107/modulation-of-upper-limb-joint-work-and-power-during-sculling-while-ballasted-with-varying-loads
#11
Jessy Lauer, Annie Hélène Rouard, João Paulo Vilas-Boas
Human musculoskeletal system must modulate work and power output in response to substantial alterations in mechanical demands associated with different tasks. In water, particularly, upper limb muscles must perform net positive work to replace the energy lost against the dissipative fluid load. Where in the upper limb is work and power developed? Is mechanical output modulated similarly at all joints, or are certain muscle groups favored? For the first time, this study examined how work and power per stroke were distributed at the upper limb joints in seven male participants sculling while ballasted with 4, 6, 8, 10, and 12 kg...
February 22, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28242060/estimating-severity-of-sideways-fall-using-a-generic-multi-linear-regression-model-based-on-kinematic-input-variables
#12
A M van der Zijden, B E Groen, E Tanck, B Nienhuis, N Verdonschot, V Weerdesteyn
Many research groups have studied fall impact mechanics to understand how fall severity can be reduced to prevent hip fractures. Yet, direct impact force measurements with force plates are restricted to a very limited repertoire of experimental falls. The purpose of this study was to develop a generic model for estimating hip impact forces (i.e. fall severity) in in vivo sideways falls without the use of force plates. Twelve experienced judokas performed sideways Martial Arts (MA) and Block ('natural') falls on a force plate, both with and without a mat on top...
January 31, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28239605/low-dimensional-synergistic-representation-of-bilateral-reaching-movements
#13
Martin K Burns, Vrajeshri Patel, Ionut Florescu, Kishore V Pochiraju, Ramana Vinjamuri
Kinematic and neuromuscular synergies have been found in numerous aspects of human motion. This study aims to determine how effectively kinematic synergies in bilateral upper arm movements can be used to replicate complex activities of daily living (ADL) tasks using a sparse optimization algorithm. Ten right-handed subjects executed 18 rapid and 11 natural-paced ADL tasks requiring bimanual coordination while sitting at a table. A position tracking system was used to track the subjects' arms in space, and angular velocities over time for shoulder abduction, shoulder flexion, shoulder internal rotation, and elbow flexion for each arm were computed...
2017: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/28237770/the-reliability-of-physical-examination-tests-for-the-clinical-assessment-of-scapular-dyskinesis-in-subjects-with-shoulder-complaints-a-systematic-review
#14
REVIEW
Toni Lange, Filip Struyf, Jochen Schmitt, Jörg Lützner, Christian Kopkow
STUDY DESIGN: Systematic review. OBJECTIVES: The aim of this systematic review was to summarize and evaluate intra- and interrater reliability research of physical examination tests used for the assessment of scapular dyskinesis. BACKGROUND: Scapular dyskinesis, defined as alteration of normal scapular kinematics, is described as a non-specific response to different shoulder pathologies. METHODS: A systematic literature search was conducted in MEDLINE, EMBASE, AMED and PEDro until March 20th, 2015...
November 3, 2016: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28228697/influence-of-posture-cuing-shirt-on-tennis-serve-kinematics-in-division-iii-tennis-players
#15
Joseph Zappala, Carolina Orrego, Emily Boe, Heather Fechner, Derek Salminen, Daniel J Cipriani
OBJECTIVE: The purpose of this study was to evaluate the influence of a posture-cuing shirt on internal rotation velocity of the shoulder during a tennis swing and to determine this influence on shoulder external rotation position. METHODS: Nine healthy competitive college tennis players from a Division III college participated in this study. High-speed motion capture allowed for 3-dimensional analysis of shoulder kinematics during a tennis serve. Two conditions were evaluated while the athletes performed a high-velocity tennis serve: a standard tennis shirt and a posture-cuing shirt...
March 2017: Journal of Chiropractic Medicine
https://www.readbyqxmd.com/read/28227917/evaluation-of-shoulder-joint-kinematics-and-muscle-activity-during-geared-and-standard-manual-wheelchair-mobility
#16
Omid Jahanian, Alyssa J Schnorenberg, Brooke A Slavens, Omid Jahanian, Alyssa J Schnorenberg, Brooke A Slavens, Brooke A Slavens, Alyssa J Schnorenberg, Omid Jahanian
Manual wheelchairs often lead to reduced independent function and an increase in shoulder pain and injuries. Geared manual wheelchairs may be a promising alternative that reduces the biomechanical demands of the shoulder needed for tasks such as propulsion on ramps and carpeted floors, while maximizing function and participation. To investigate the effects of geared manual wheelchair mobility during demanding tasks such as ramp ascent, six able-bodied subjects were evaluated in this study. Subjects were asked to propel both standard and geared manual wheelchairs on a tiled level floor and on a wheelchair ADA ramp...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227883/development-and-validation-of-thums-version-5-with-1d-muscle-models-for-active-and-passive-automotive-safety-research
#17
Hideyuki Kimpara, Yuko Nakahira, Masami Iwamoto, Hideyuki Kimpara, Yuko Nakahira, Masami Iwamoto, Hideyuki Kimpara, Masami Iwamoto, Yuko Nakahira
Accurately predicting the occupant kinematics is critical to better understand the injury mechanisms during an automotive crash event. The objectives of this study were to develop and validate a finite element (FE) model of the human body integrated with an active muscle model called Total HUman Model for Safety (THUMS) version 5, which has the body size of the 50th percentile American adult male (AM50). This model is characterized by being able to generate a force owing to muscle tone and to predict the occupant response during an automotive crash event...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28220396/evaluation-of-the-turning-characteristics-according-to-the-severity-of-parkinson-disease-during-the-timed-up-and-go-test
#18
Minji Son, Changhong Youm, Sangmyung Cheon, Jaewoo Kim, Meounggon Lee, Youkyung Kim, Jinhee Kim, Hyeryun Sung
BACKGROUND: Patients with Parkinson disease (PD) experience problems such as falls and freezing of gait during walking and turning in daily activities. However, few studies have examined the relationship between simultaneous turning tasks and the severity of PD. AIM: To investigate turning characteristics in patients with PD using three-dimensional (3D) analysis during the timed up and go (TUG) test. METHODS: Thirty individuals performed the TUG test under 3D motion analysis: 10 patients with Hoehn and Yahr (H&Y) stages 2...
February 20, 2017: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/28219842/differences-in-the-activation-and-co-activation-ratios-of-the-four-subdivisions-of-trapezius-between-genders-following-a-computer-typing-task
#19
Kimberly A Szucs, Megan Molnar
The aim of this study was to provide a description of gender differences of the activation patterns of the four subdivisions of the trapezius (clavicular, upper, middle, lower) following a 60min computer work task. Surface EMG was collected from these subdivisions from 21 healthy subjects during bilateral arm elevation pre-/post- task. Subjects completed a standardized 60min computer work task at a standard, ergonomic workstation. Normalized activation and activation ratios of each trapezius subdivision were compared between genders and condition with repeated measures ANOVAs...
February 17, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28197849/effect-of-myofascial-techniques-for-treatment-of-upper-limb-dysfunctions-in-breast-cancer-survivors-randomized-controlled-trial
#20
An De Groef, Marijke Van Kampen, Nele Verlvoesem, Evi Dieltjens, Lore Vos, Tessa De Vrieze, Marie-Rose Christiaens, Patrick Neven, Inge Geraerts, Nele Devoogdt
PURPOSE: Besides pain, myofascial dysfunctions may contribute to the presence of upper limb impairments such as impaired range of motion, decreased strength, lymphedema, and altered postures and kinematics. Therefore, the aim of this study was to investigate the effect of myofascial therapy in addition to a standard physical therapy program for treatment of upper limb dysfunctions in breast cancer survivors. METHODS: Fifty women treated for a unilateral breast cancer with pain and myofascial dysfunctions at the upper limb region...
February 14, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
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