keyword
MENU ▼
Read by QxMD icon Read
search

kinematic

keyword
https://www.readbyqxmd.com/read/29454037/melatonin-attenuates-%C3%AE-9-tetrahydrocannabinol-induced-reduction-in-rat-sperm-motility-and-kinematics-in-vitro
#1
Isiaka Abdullateef Alagbonsi, Luqman Aribidesi Olayaki
The use of Cannabis sativa (CS) has been widely demonstrated to have detrimental effect on male reproductive functions. Despite the well-known existence of endocannabinoid and melatonergic systems in semen, the physiological significance of their interaction is not understood. We recently showed that melatonin exacerbates the CS-induced gonadotoxicity in-vivo. To overcome the limitations associated with our in-vivo studies and further understand the role of cannabinoid-melatonin relationship in sperm functions, this study investigated the in-vitro effect of tetrahydrocannabinol (THC) and/or melatonin on motility and kinematics of capacitating rat sperms...
February 14, 2018: Reproductive Toxicology
https://www.readbyqxmd.com/read/29453980/virtual-reality-for-upper-limb-rehabilitation-in-sub-acute-and-chronic-stroke-a-randomized-controlled-trial
#2
Pawel Kiper, Andrzej Szczudlik, Michela Agostini, Jozef Opara, Roman Nowobilski, Laura Ventura, Paolo Tonin, Andrea Turolla
OBJECTIVE: To evaluate the effectiveness of reinforced feedback in virtual environment (RFVE) treatment combined with conventional rehabilitation (CR) in comparison with CR alone, and to study whether changes are related to stroke aetiology (i.e. ischemic or hemorrhagic). DESIGN: Randomized controlled trial. SETTING: Inpatients in a hospital facility for intensive rehabilitation. PARTICIPANTS: 136 patients within one year from onset of a single stroke...
February 14, 2018: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29452908/gait-and-posture-analysis-in-patients-with-maxillary-transverse-discrepancy-before-and-after-rpe
#3
Martina Mason, Fabiola Spolaor, Annamaria Guiotto, Alberto De Stefani, Antonio Gracco, Zimi Sawacha
AIM: The purpose of this study was to evaluate the effects of the rapid palatal expansion (RPE) on posture and gait analysis in subjects with maxillary transverse discrepancies. MATERIAL AND METHODS: Forty-one patients between 6 and 12 years were divided into 3 groups: 10 control subjects (Cs), 16 patients with unilateral posterior crossbite (CbMono), 15 patients with maxillary transverse discrepancy and no crossbite (Nocb). Every subject underwent gait analysis and posturographic examination in order to evaluate the presence of balance alterations before (T0) and after (T4) RPE application...
February 13, 2018: International Orthodontics
https://www.readbyqxmd.com/read/29452575/a-machine-learning-approach-to-detect-changes-in-gait-parameters-following-a-fatiguing-occupational-task
#4
Amir Baghdadi, Fadel M Megahed, Ehsan T Esfahani, Lora A Cavuoto
The purpose of this study is to provide a method for classifying non-fatigued versus fatigued states following manual material handling. A method of template matching pattern recognition for feature extraction (1$ Recognizer) along with the support vector machine (SVM) model for classification were applied on the kinematics of gait cycles segmented by our stepwise search-based segmentation algorithm. A single inertial measurement unit (IMU) on the ankle was used, providing a minimally intrusive and inexpensive tool for monitoring...
February 16, 2018: Ergonomics
https://www.readbyqxmd.com/read/29451922/identifying-classifier-input-signals-to-predict-a-cross-slope-during-transtibial-amputee-walking
#5
Courtney E Shell, Glenn K Klute, Richard R Neptune
Advanced prosthetic foot designs often incorporate mechanisms that adapt to terrain changes in real-time to improve mobility. Early identification of terrain (e.g., cross-slopes) is critical to appropriate adaptation. This study suggests that a simple classifier based on linear discriminant analysis can accurately predict a cross-slope encountered (0°, -15°, 15°) using measurements from the residual limb, primarily from the prosthesis itself. The classifier was trained and tested offline using motion capture and in-pylon sensor data collected during walking trials in mid-swing and early stance...
2018: PloS One
https://www.readbyqxmd.com/read/29451919/correction-measuring-3d-hand-and-finger-kinematics-a-comparison-between-inertial-sensing-and-an-opto-electronic-marker-system
#6
Josien C van den Noort, Henk G Kortier, Nathalie van Beek, DirkJan H E J Veeger, Peter H Veltink
[This corrects the article DOI: 10.1371/journal.pone.0164889.].
2018: PloS One
https://www.readbyqxmd.com/read/29450566/unicompartmental-knee-arthroplasty-fails-to-completely-restore-normal-gait-patterns-during-level-walking
#7
Myung-Ku Kim, Jung-Ro Yoon, Se-Hyun Yang, Young-Soo Shin
PURPOSE: Gait analysis is a valuable instrument for measuring function objectively after unicompartmental knee arthroplasty (UKA). However, most gait analysis studies have reported conflicting results for functional assessment after UKA. This meta-analysis compared the gait patterns of UKA patients and healthy controls during level walking. METHODS: Studies were included in the meta-analysis if they recorded vertical ground reaction force (GRF), flexion at initial contact, flexion at loading response, extension at mid-stance, flexion at swing, walking speed, cadence, and stride length in UKA patients or healthy controls...
February 15, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29450409/microstructurally-anchored-cardiac-kinematics-by-combining-in-vivo-dense-mri-and-cdti
#8
Luigi E Perotti, Patrick Magrath, Ilya A Verzhbinsky, Eric Aliotta, Kévin Moulin, Daniel B Ennis
Metrics of regional myocardial function can detect the onset of cardiovascular disease, evaluate the response to therapy, and provide mechanistic insight into cardiac dysfunction. Knowledge of local myocardial microstructure is necessary to distinguish between isotropic and anisotropic contributions of local deformation and to quantify myofiber kinematics, a microstructurally anchored measure of cardiac function. Using a computational model we combine in vivo cardiac displacement and diffusion tensor data to evaluate pointwise the deformation gradient tensor and isotropic and anisotropic deformation invariants...
June 2017: Functional Imaging and Modeling of the Heart: ... International Workshop, FIMH ..., Proceedings. FIMH
https://www.readbyqxmd.com/read/29449083/three-dimensional-scapular-dyskinesis-in-hook-plated-acromioclavicular-dislocation-including-hook-motion
#9
Eugene Kim, Seunghee Lee, Hwa-Jae Jeong, Jai Hyung Park, Se-Jin Park, Jaewook Lee, Woosub Kim, Hee Jin Park, So Yeon Lee, Tsuyoshi Murase, Kazuomi Sugamoto, Sumika Ikemoto
BACKGROUND: The purpose of this study is to analyze the 3-dimensional scapular dyskinesis and the kinematics of a hook plate relative to the acromion after hook-plated acromioclavicular dislocation in vivo. Reported complications of acromioclavicular reduction using a hook plate include subacromial erosion and impingement. However, there are few reports of the 3-dimensional kinematics of the hook and scapula after the aforementioned surgical procedure. METHODS: We studied 15 cases of acromioclavicular dislocation treated with a hook plate and 15 contralateral normal shoulders using computed tomography in the neutral and full forward flexion positions...
February 13, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29448460/correlation-versus-randomization-of-jerky-flow-in-an-almgsczr-alloy-using-acoustic-emission
#10
T A Lebedkina, D A Zhemchuzhnikova, M A Lebyodkin
Jerky flow in solids results from collective dynamics of dislocations which gives rise to serrated deformation curves and a complex evolution of the strain heterogeneity. A rich example of this phenomenon is the Portevin-Le Chatelier effect in alloys. The corresponding spatiotemporal patterns showed some universal features which provided a basis for a well-known phenomenological classification. Recent studies revealed peculiar features in both the stress serration sequences and the kinematics of deformation bands in Al-based alloys containing fine microstructure elements, such as nanosize precipitates and/or submicron grains...
January 2018: Physical Review. E
https://www.readbyqxmd.com/read/29448221/trip-specific-training-enhances-recovery-after-large-postural-disturbances-for-which-there-is-expectation
#11
Simisola O Oludare, Mackenzie L Pater, Noah J Rosenblatt, Mark D Grabiner
PURPOSE: Informed consent usually provides foreknowledge of experimental methods that can potentially increase expectation of stimuli and, therefore, influence the response. We determined the effects of increased expectation and trip-specific training on the recovery response following a treadmill-delivered, trip-specific disturbance. To deliver unexpected disturbances, subjects were deceived during the informed consent process. The primary hypothesis was that the recovery response following an expected postural disturbance would be characterized by trunk kinematics that have been shown to decrease the likelihood of a fall, compared to following an unexpected postural disturbance...
February 5, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29448220/trunk-postural-balance-and-low-back-pain-reliability-and-relationship-with-clinical-changes-following-a-lumbar-stabilization-exercise-program
#12
Ali Shahvarpour, Dany Gagnon, Richard Preuss, Sharon M Henry, Christian Larivière
Lumbar stabilization programs reduce pain and disability, but the mechanisms of action underlying this treatment are unknown. Trunk postural control during unstable sitting represents a surrogate measure of motor control mechanisms involved to maintain the dynamic stability of the spine. This exploratory study aimed to determine the reliability of trunk postural control measures over an 8-week interval, their sensitivity to low back pain status and treatment and their relationship with clinical outcomes. Trunk postural control measures were determined in patients with low back pain before and after an 8-week lumbar stabilization exercise program...
February 9, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29448160/multi-plane-multi-joint-lower-extremity-support-moments-during-a-rapid-deceleration-task-implications-for-knee-loading
#13
Jeffery T Podraza, Scott C White, Dan K Ramsey
The principle of lower limb support, and the contribution of hip, knee and ankle moments to an overall limb support strategy for an impact-like, rapid deceleration movement may help explain individual moment magnitude changes, thereby providing insight into how injury might occur or be avoided. Twenty subjects performed single limb, impact-like, deceleration landings at three different knee flexion angles in the range of 0-25, 25-50 and 50-75°. Kinematic and kinetic measures identified hip, knee and ankle moment contribution to limb support moments (LSMs) in three planes...
February 12, 2018: Human Movement Science
https://www.readbyqxmd.com/read/29448081/medial-tilting-of-the-joint-line-in-posterior-stabilized-total-knee-arthroplasty-increases-contact-force-and-stress
#14
Yoshihisa Tanaka, Shinichiro Nakamura, Shinichi Kuriyama, Kohei Nishitani, Hiromu Ito, Moritoshi Furu, Mutsumi Watanabe, Shuichi Matsuda
BACKGROUND: Kinematically aligned total knee arthroplasty is based on the concept to represent the premorbid joint alignment with cruciate-retaining implants, characterized by medial tilt and internal rotation. However, kinematic and kinetic effects of kinematically aligned total knee arthroplasty with posterior-stabilized implants is unknown. The purpose of this study was to examine the effect of medial tilting of the joint line with posterior-stabilized implants. METHODS: A mechanical alignment model, and medial tilt 3° and 5° models were constructed...
February 9, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29447910/preventing-non-contact-acl-injuries-in-female-athletes-what-can-we-learn-from-dancers
#15
Catherine Turner, Sarah Crow, Thomas Crowther, Brittany Keating, Trenton Saupan, Jason Pyfer, Kimberly Vialpando, Szu-Ping Lee
OBJECTIVES: To investigate the effects of dance experience and movement instruction on lower extremity kinematics and muscle activation during a landing task. DESIGN: Cross-sectional case control. SETTING: Laboratory setting. PARTICIPANTS: 27 female subjects (age 18-25) in 2 groups: dancers (n = 12) and non-dancers (n = 15). MAIN OUTCOME MEASURES: Lower extremity biomechanics during drop landing were analyzed...
December 23, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29447753/kinematics-of-the-anthropoid-os-centrale-and-the-functional-consequences-of-scaphoid-centrale-fusion-in-african-apes-and-hominins
#16
Caley M Orr
In most primates, the os centrale is interposed between the scaphoid, trapezoid, trapezium, and head of the capitate, thus constituting a component of the wrist's midcarpal complex. Scaphoid-centrale fusion is among the clearest morphological synapomorphies of African apes and hominins. Although it might facilitate knuckle-walking by increasing the rigidity and stability of the radial side of the wrist, the exact functional significance of scaphoid-centrale fusion is unclear. If fusion acts to produce a more rigid radial wrist that stabilizes the hand and limits shearing stresses, then in taxa with a free centrale, it should anchor ligaments that check extension and radial deviation, but exhibit motion independent of the scaphoid...
January 2018: Journal of Human Evolution
https://www.readbyqxmd.com/read/29447080/improved-lower-extremity-pedaling-mechanics-in-individuals-with-stroke-under-maximal-workloads
#17
Susan M Linder, Anson B Rosenfeldt, Andrew S Bazyk, Mandy Miller Koop, Sarah Ozinga, Jay L Alberts
Background Individuals with stroke present with motor control deficits resulting in the abnormal activation and timing of agonist and antagonist muscles and inefficient movement patterns. The analysis of pedaling biomechanics provides a window into understanding motor control deficits, which vary as a function of workload. Understanding the relationship between workload and motor control is critical when considering exercise prescription during stroke rehabilitation. Objectives To characterize pedaling kinematics and motor control processes under conditions in which workload was systematically increased to an eventual patient-specific maximum...
February 15, 2018: Topics in Stroke Rehabilitation
https://www.readbyqxmd.com/read/29446974/error-reduction-in-the-finite-helical-axis-for-knee-kinematics
#18
Emily L Bishop, Jessica C Küpper, Ingrid R Fjeld, Gregor Kuntze, Janet L Ronsky
Traditionally the FHA is calculated stepwise between data points (sFHA), requiring down sampling to achieve a sufficiently large step size to minimize error. This paper proposes an alternate FHA calculation approach (rFHA), using a unique reference position to reduce error associated with small rotation angles. This study demonstrated error reduction using the rFHA approach relative to the sFHA approach. Furthermore, the rFHA in the femur is defined at each time point providing a continuous representation of joint motion...
February 15, 2018: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/29446708/does-local-dynamic-stability-of-kayak-paddling-technique-affect-the-sports-performance-a-pilot-study
#19
Daniel Hamacher, Tobias Krebs, Guido Meyer, Astrid Zech
During competition, kayak athletes must optimally adapt to environmental factors (e.g. wind, waves) to achieve peak performance. However, the ability to adapt to such perturbations has never been assessed in kayak paddling. Therefore, the aim of the current study was to evaluate the local dynamic stability in sports technique of youth sprint kayak athletes. In a cross-sectional study, 14 healthy male athletes were recruited from an elite youth sprint kayak squad. During an incremental kayak ergometer test, mean power, heart rates and local dynamic technique stability of hands, arms, trunk and paddle were registered and the association with the athletes 2000 m free-water times were estimated using mixed models...
February 15, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29446695/weight-shift-ability-significantly-correlates-with-walking-velocity-in-post-acute-stroke-patients
#20
Arinori Kamono, Naomichi Ogihara
The ability to shift weight toward the paretic leg has been considered an essential ability to restore independent walking for post-acute stroke patients. However, few data are available regarding the relationship between the weight-shift ability and gait performance. No clear mechanism has been provided as to why and how the weight-shift ability improves walking performance in stroke patients. We therefore investigated changes in the weight-shift ability and kinematic and kinetic parameters of walking gait in post-stroke patients during rehabilitation...
February 1, 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
keyword
keyword
36593
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"